diff --git a/README.md b/README.md
index 870549dc..c3637a57 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,9 @@
 | - | - |
 | [MockNMR](https://github.com/erasureprotocol/erasure-next-contracts/blob/2c14b52b95c15e686d006b8d34411d1321fcfc81/Fractal/contracts/helpers/mock/MockNMR.sol) | [0x1eBf22785bffb6B44fEbBc8a41056b1aD43401f9](https://rinkeby.etherscan.io/address/0x1eBf22785bffb6B44fEbBc8a41056b1aD43401f9) |
 | [Erasure_Posts](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/registries/Erasure_Posts.sol) | [0xEd11206a7d07601985DCC4FeD7B3284a928D022B](https://rinkeby.etherscan.io/address/0xEd11206a7d07601985DCC4FeD7B3284a928D022B) |
-| [Erasure_Agreements](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/registries/Erasure_Agreements.sol) | [0xedE872bb4d8B7245D96Ed38CF29bE5116B53B7ae](https://rinkeby.etherscan.io/address/0xedE872bb4d8B7245D96Ed38CF29bE5116B53B7ae) |
+| [Erasure_Agreements](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/registries/Erasure_Agreements.sol) | [0xa1811eD875E1AcE9a807aef15b885b8F616F1b0C](https://rinkeby.etherscan.io/address/0xa1811eD875E1AcE9a807aef15b885b8F616F1b0C) |
 | [Erasure_Users](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/registries/Erasure_Users.sol) | [0x58414777A792CD8E5A3D9f2fA576B16c38378234](https://rinkeby.etherscan.io/address/0x58414777A792CD8E5A3D9f2fA576B16c38378234) |
-| [Post_Factory](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/posts/Post_Factory.sol) | [0x4C90aEF327556a7ca58EAD8B86c8215a247756B6](https://rinkeby.etherscan.io/address/0x4C90aEF327556a7ca58EAD8B86c8215a247756B6) |
+| [Post_Factory](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/posts/Post_Factory.sol) | [0xec2Eaf70C3733C30cF65E5B5E4582228951d40ca](https://rinkeby.etherscan.io/address/0xec2Eaf70C3733C30cF65E5B5E4582228951d40ca) |
 | [Feed_Factory](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/posts/Feed_Factory.sol) | [0xabFe46E50D7A72e17688b44ce4f8B95545020560](https://rinkeby.etherscan.io/address/0xabFe46E50D7A72e17688b44ce4f8B95545020560) |
 | [OneWayGriefing_Factory](https://github.com/erasureprotocol/erasure-next-contracts/blob/master/contracts/agreements/OneWayGriefing_Factory.sol) | [0x91b052E4800DB77d4d0BFE9fe2bE48352695F282](https://rinkeby.etherscan.io/address/0x91b052E4800DB77d4d0BFE9fe2bE48352695F282) |
 
diff --git a/build/Erasure_Agreements.json b/build/Erasure_Agreements.json
deleted file mode 100644
index b4ece8d0..00000000
--- a/build/Erasure_Agreements.json
+++ /dev/null
@@ -1,788 +0,0 @@
-{
-  "contractName": "Erasure_Agreements",
-  "abi": [
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "addFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "name": "getFactoryAddress",
-      "outputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryData",
-      "outputs": [
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactory",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "uint8"
-        },
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "retireFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "renounceOwnership",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getFactories",
-      "outputs": [
-        {
-          "name": "factories",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedFactories",
-      "outputs": [
-        {
-          "name": "factories",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "owner",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "isOwner",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryID",
-      "outputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "name": "extraData",
-          "type": "uint80"
-        }
-      ],
-      "name": "register",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getFactoryCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstance",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstanceData",
-      "outputs": [
-        {
-          "name": "instanceAddress",
-          "type": "address"
-        },
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        },
-        {
-          "name": "extraData",
-          "type": "uint80"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "newOwner",
-          "type": "address"
-        }
-      ],
-      "name": "transferOwnership",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryStatus",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "FactoryAdded",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "FactoryRetired",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "instanceIndex",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "InstanceRegistered",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "previousOwner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "newOwner",
-          "type": "address"
-        }
-      ],
-      "name": "OwnershipTransferred",
-      "type": "event"
-    }
-  ],
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\ No newline at end of file
diff --git a/build/Erasure_Posts.json b/build/Erasure_Posts.json
deleted file mode 100644
index 4ae499a9..00000000
--- a/build/Erasure_Posts.json
+++ /dev/null
@@ -1,788 +0,0 @@
-{
-  "contractName": "Erasure_Posts",
-  "abi": [
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "addFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "name": "getFactoryAddress",
-      "outputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryData",
-      "outputs": [
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactory",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "uint8"
-        },
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "retireFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "renounceOwnership",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getFactories",
-      "outputs": [
-        {
-          "name": "factories",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedFactories",
-      "outputs": [
-        {
-          "name": "factories",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "owner",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "isOwner",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryID",
-      "outputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "name": "extraData",
-          "type": "uint80"
-        }
-      ],
-      "name": "register",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getFactoryCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstance",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstanceData",
-      "outputs": [
-        {
-          "name": "instanceAddress",
-          "type": "address"
-        },
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        },
-        {
-          "name": "extraData",
-          "type": "uint80"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "newOwner",
-          "type": "address"
-        }
-      ],
-      "name": "transferOwnership",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryStatus",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "FactoryAdded",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "FactoryRetired",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "instanceIndex",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "InstanceRegistered",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "previousOwner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "newOwner",
-          "type": "address"
-        }
-      ],
-      "name": "OwnershipTransferred",
-      "type": "event"
-    }
-  ],
-  "bytecode": 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-  "compiler": {
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-    "optimizer": false,
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-  "networks": {},
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-  "updatedAt": "2019-08-16T16:53:40.402Z"
-}
\ No newline at end of file
diff --git a/build/Erasure_Users.json b/build/Erasure_Users.json
deleted file mode 100644
index d871ecec..00000000
--- a/build/Erasure_Users.json
+++ /dev/null
@@ -1,5080 +0,0 @@
-{
-  "contractName": "Erasure_Users",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "user",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "UserRegistered",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "user",
-          "type": "address"
-        }
-      ],
-      "name": "UserRemoved",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "registerUser",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "removeUser",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "user",
-          "type": "address"
-        }
-      ],
-      "name": "getUserData",
-      "outputs": [
-        {
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getUsers",
-      "outputs": [
-        {
-          "name": "users",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getUserCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedUsers",
-      "outputs": [
-        {
-          "name": "users",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    }
-  ],
-  "bytecode": 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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../helpers/HitchensUnorderedAddressSetLib.sol\";\n\n\ncontract Erasure_Users {\n\n    using HitchensUnorderedAddressSetLib for HitchensUnorderedAddressSetLib.Set;\n    HitchensUnorderedAddressSetLib.Set private _users;\n\n    mapping (address => bytes) private _metadata;\n\n    event UserRegistered(address indexed user, bytes data);\n    event UserRemoved(address indexed user);\n\n    // state functions\n\n    function registerUser(bytes memory data) public {\n        require(!_users.exists(msg.sender), \"user already exists\");\n\n        // add user\n        _users.insert(msg.sender);\n\n        // set metadata\n        _metadata[msg.sender] = data;\n\n        // emit event\n        emit UserRegistered(msg.sender, data);\n    }\n\n    function removeUser() public {\n        // require user is registered\n        require(_users.exists(msg.sender), \"user does not exist\");\n\n        // remove user\n        _users.remove(msg.sender);\n\n        // delete metadata\n        delete _metadata[msg.sender];\n\n        // emit event\n        emit UserRemoved(msg.sender);\n    }\n\n    // view functions\n\n    function getUserData(address user) public view returns (bytes memory data) {\n        data = _metadata[user];\n    }\n\n    function getUsers() public view returns (address[] memory users) {\n        users = _users.keyList;\n    }\n\n    function getUserCount() public view returns (uint256 count) {\n        count = _users.count();\n    }\n\n    // Note: startIndex is inclusive, endIndex exclusive\n    function getPaginatedUsers(uint256 startIndex, uint256 endIndex) public view returns (address[] memory users) {\n        require(startIndex < endIndex, \"startIndex must be less than endIndex\");\n        require(endIndex <= _users.count(), \"end index out of range\");\n\n        // initialize fixed size memory array\n        address[] memory range = new address[](endIndex - startIndex);\n\n        // Populate array with addresses in range\n        for (uint256 i = startIndex; i < endIndex; i++) {\n            range[i - startIndex] = _users.keyAtIndex(i);\n        }\n\n        // return array of addresses\n        users = range;\n    }\n}\n",
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-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/registries/Erasure_Users.sol",
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-        8832
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-                    "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                    "typeString": "address[]"
-                  },
-                  "typeName": {
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-                      "name": "address",
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-                      "src": "1583:7:46",
-                      "stateMutability": "nonpayable",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
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-                    "length": null,
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-                    "src": "1583:9:46",
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-                      "typeString": "address[]"
-                    }
-                  },
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-                  "visibility": "internal"
-                }
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-              "src": "1582:24:46"
-            },
-            "scope": 8832,
-            "src": "1497:625:46",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "public"
-          }
-        ],
-        "scope": 8833,
-        "src": "83:2041:46"
-      }
-    ],
-    "src": "0:2125:46"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.561Z"
-}
\ No newline at end of file
diff --git a/build/Feed.json b/build/Feed.json
deleted file mode 100644
index 57fce620..00000000
--- a/build/Feed.json
+++ /dev/null
@@ -1,5741 +0,0 @@
-{
-  "contractName": "Feed",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getMetadata",
-      "outputs": [
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "hasActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getOperator",
-      "outputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isCreator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "post",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "postFactory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "initData",
-          "type": "bytes"
-        }
-      ],
-      "name": "PostCreated",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "StaticMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "VariableMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "name": "OperatorUpdated",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "name": "postRegistry",
-          "type": "address"
-        },
-        {
-          "name": "feedStaticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "initialize",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "postFactory",
-          "type": "address"
-        },
-        {
-          "name": "initData",
-          "type": "bytes"
-        }
-      ],
-      "name": "createPost",
-      "outputs": [
-        {
-          "name": "post",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "feedVariableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "setFeedVariableMetadata",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "post",
-          "type": "address"
-        },
-        {
-          "name": "postVariableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "setPostVariableMetadata",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getPosts",
-      "outputs": [
-        {
-          "name": "posts",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getPostRegistry",
-      "outputs": [
-        {
-          "name": "postRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    }
-  ],
-  "bytecode": 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-  "source": "pragma solidity ^0.5.0;\n\nimport \"./Post_Factory.sol\";\nimport \"../modules/iRegistry.sol\";\nimport \"../modules/Metadata.sol\";\nimport \"../modules/Operated.sol\";\nimport \"../modules/Template.sol\";\n\n\ncontract Feed is Operated, Metadata, Template {\n\n    address[] private _posts;\n    address private _postRegistry;\n\n    event PostCreated(address post, address postFactory, bytes initData);\n\n    function initialize(\n        address operator,\n        address postRegistry,\n        bytes memory feedStaticMetadata\n    ) public initializeTemplate() {\n        // set operator\n        if (operator != address(0)) {\n            Operated._setOperator(operator);\n            Operated._activateOperator();\n        }\n\n        // set post registry\n        _postRegistry = postRegistry;\n\n        // set static metadata\n        Metadata._setStaticMetadata(feedStaticMetadata);\n    }\n\n    // state functions\n\n    function createPost(address postFactory, bytes memory initData) public returns (address post) {\n        // only active operator or creator\n        require(Template.isCreator(msg.sender) || Operated.isActiveOperator(msg.sender), \"only active operator or creator\");\n\n        // validate factory is registered\n        require(\n            iRegistry(_postRegistry).getFactoryStatus(postFactory) == iRegistry.FactoryStatus.Registered,\n            \"factory is not actively registered\"\n        );\n\n        // spawn new post contract\n        post = Post_Factory(postFactory).createEncoded(initData);\n\n        // add to array of posts\n        _posts.push(post);\n\n        // emit event\n        emit PostCreated(post, postFactory, initData);\n    }\n\n    function setFeedVariableMetadata(bytes memory feedVariableMetadata) public {\n        // only active operator or creator\n        require(Template.isCreator(msg.sender) || Operated.isActiveOperator(msg.sender), \"only active operator or creator\");\n\n        Metadata._setVariableMetadata(feedVariableMetadata);\n    }\n\n    function setPostVariableMetadata(address post, bytes memory postVariableMetadata) public {\n        // only active operator or creator\n        require(Template.isCreator(msg.sender) || Operated.isActiveOperator(msg.sender), \"only active operator or creator\");\n\n        Post(post).setVariableMetadata(postVariableMetadata);\n    }\n\n    // view functions\n\n    function getPosts() public view returns (address[] memory posts) {\n        posts = _posts;\n    }\n\n    function getPostRegistry() public view returns (address postRegistry) {\n        postRegistry = _postRegistry;\n    }\n\n}\n",
-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Feed.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Feed.sol",
-    "exportedSymbols": {
-      "Feed": [
-        8191
-      ]
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-    "id": 8192,
-    "nodeType": "SourceUnit",
-    "nodes": [
-      {
-        "id": 7988,
-        "literals": [
-          "solidity",
-          "^",
-          "0.5",
-          ".0"
-        ],
-        "nodeType": "PragmaDirective",
-        "src": "0:23:38"
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Post_Factory.sol",
-        "file": "./Post_Factory.sol",
-        "id": 7989,
-        "nodeType": "ImportDirective",
-        "scope": 8192,
-        "sourceUnit": 8587,
-        "src": "25:28:38",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
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-        "src": "54:34:38",
-        "symbolAliases": [],
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-        "file": "../modules/Metadata.sol",
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-        "src": "89:33:38",
-        "symbolAliases": [],
-        "unitAlias": ""
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-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/modules/Operated.sol",
-        "file": "../modules/Operated.sol",
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-        "nodeType": "ImportDirective",
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-        "src": "123:33:38",
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-              "name": "Operated",
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-                                "typeDescriptions": {
-                                  "typeIdentifier": "t_magic_message",
-                                  "typeString": "msg"
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-                              },
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-                              "isConstant": false,
-                              "isLValue": false,
-                              "isPure": false,
-                              "lValueRequested": false,
-                              "memberName": "sender",
-                              "nodeType": "MemberAccess",
-                              "referencedDeclaration": null,
-                              "src": "2120:10:38",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_address_payable",
-                                "typeString": "address payable"
-                              }
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": [
-                              {
-                                "typeIdentifier": "t_address_payable",
-                                "typeString": "address payable"
-                              }
-                            ],
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 8147,
-                              "name": "Template",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 7680,
-                              "src": "2101:8:38",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_type$_t_contract$_Template_$7680_$",
-                                "typeString": "type(contract Template)"
-                              }
-                            },
-                            "id": 8148,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": false,
-                            "lValueRequested": false,
-                            "memberName": "isCreator",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": 7679,
-                            "src": "2101:18:38",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$",
-                              "typeString": "function (address) view returns (bool)"
-                            }
-                          },
-                          "id": 8151,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": false,
-                          "kind": "functionCall",
-                          "lValueRequested": false,
-                          "names": [],
-                          "nodeType": "FunctionCall",
-                          "src": "2101:30:38",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_bool",
-                            "typeString": "bool"
-                          }
-                        },
-                        "nodeType": "BinaryOperation",
-                        "operator": "||",
-                        "rightExpression": {
-                          "argumentTypes": null,
-                          "arguments": [
-                            {
-                              "argumentTypes": null,
-                              "expression": {
-                                "argumentTypes": null,
-                                "id": 8154,
-                                "name": "msg",
-                                "nodeType": "Identifier",
-                                "overloadedDeclarations": [],
-                                "referencedDeclaration": 11064,
-                                "src": "2161:3:38",
-                                "typeDescriptions": {
-                                  "typeIdentifier": "t_magic_message",
-                                  "typeString": "msg"
-                                }
-                              },
-                              "id": 8155,
-                              "isConstant": false,
-                              "isLValue": false,
-                              "isPure": false,
-                              "lValueRequested": false,
-                              "memberName": "sender",
-                              "nodeType": "MemberAccess",
-                              "referencedDeclaration": null,
-                              "src": "2161:10:38",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_address_payable",
-                                "typeString": "address payable"
-                              }
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": [
-                              {
-                                "typeIdentifier": "t_address_payable",
-                                "typeString": "address payable"
-                              }
-                            ],
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 8152,
-                              "name": "Operated",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 6629,
-                              "src": "2135:8:38",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_type$_t_contract$_Operated_$6629_$",
-                                "typeString": "type(contract Operated)"
-                              }
-                            },
-                            "id": 8153,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": false,
-                            "lValueRequested": false,
-                            "memberName": "isActiveOperator",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": 6628,
-                            "src": "2135:25:38",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$",
-                              "typeString": "function (address) view returns (bool)"
-                            }
-                          },
-                          "id": 8156,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": false,
-                          "kind": "functionCall",
-                          "lValueRequested": false,
-                          "names": [],
-                          "nodeType": "FunctionCall",
-                          "src": "2135:37:38",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_bool",
-                            "typeString": "bool"
-                          }
-                        },
-                        "src": "2101:71:38",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bool",
-                          "typeString": "bool"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "hexValue": "6f6e6c7920616374697665206f70657261746f72206f722063726561746f72",
-                        "id": 8158,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": true,
-                        "kind": "string",
-                        "lValueRequested": false,
-                        "nodeType": "Literal",
-                        "src": "2174:33:38",
-                        "subdenomination": null,
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_stringliteral_a21ac40b74a97d71057d90a2d953ad72daa11decf04763e0ec8298e38f085c00",
-                          "typeString": "literal_string \"only active operator or creator\""
-                        },
-                        "value": "only active operator or creator"
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bool",
-                          "typeString": "bool"
-                        },
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-                          "typeIdentifier": "t_stringliteral_a21ac40b74a97d71057d90a2d953ad72daa11decf04763e0ec8298e38f085c00",
-                          "typeString": "literal_string \"only active operator or creator\""
-                        }
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-                      "id": 8146,
-                      "name": "require",
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-                      "overloadedDeclarations": [
-                        11067,
-                        11068
-                      ],
-                      "referencedDeclaration": 11068,
-                      "src": "2093:7:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
-                        "typeString": "function (bool,string memory) pure"
-                      }
-                    },
-                    "id": 8159,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
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-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "2093:115:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_tuple$__$",
-                      "typeString": "tuple()"
-                    }
-                  },
-                  "id": 8160,
-                  "nodeType": "ExpressionStatement",
-                  "src": "2093:115:38"
-                },
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "id": 8165,
-                        "name": "postVariableMetadata",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 8143,
-                        "src": "2250:20:38",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "expression": {
-                        "argumentTypes": null,
-                        "arguments": [
-                          {
-                            "argumentTypes": null,
-                            "id": 8162,
-                            "name": "post",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 8141,
-                            "src": "2224:4:38",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_address",
-                              "typeString": "address"
-                            }
-                          }
-                        ],
-                        "expression": {
-                          "argumentTypes": [
-                            {
-                              "typeIdentifier": "t_address",
-                              "typeString": "address"
-                            }
-                          ],
-                          "id": 8161,
-                          "name": "Post",
-                          "nodeType": "Identifier",
-                          "overloadedDeclarations": [],
-                          "referencedDeclaration": 8438,
-                          "src": "2219:4:38",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_type$_t_contract$_Post_$8438_$",
-                            "typeString": "type(contract Post)"
-                          }
-                        },
-                        "id": 8163,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": false,
-                        "kind": "typeConversion",
-                        "lValueRequested": false,
-                        "names": [],
-                        "nodeType": "FunctionCall",
-                        "src": "2219:10:38",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_contract$_Post_$8438",
-                          "typeString": "contract Post"
-                        }
-                      },
-                      "id": 8164,
-                      "isConstant": false,
-                      "isLValue": false,
-                      "isPure": false,
-                      "lValueRequested": false,
-                      "memberName": "setVariableMetadata",
-                      "nodeType": "MemberAccess",
-                      "referencedDeclaration": 8437,
-                      "src": "2219:30:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_external_nonpayable$_t_bytes_memory_ptr_$returns$__$",
-                        "typeString": "function (bytes memory) external"
-                      }
-                    },
-                    "id": 8166,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "2219:52:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_tuple$__$",
-                      "typeString": "tuple()"
-                    }
-                  },
-                  "id": 8167,
-                  "nodeType": "ExpressionStatement",
-                  "src": "2219:52:38"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 8169,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "setPostVariableMetadata",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 8144,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 8141,
-                  "name": "post",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8169,
-                  "src": "1984:12:38",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8140,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1984:7:38",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8143,
-                  "name": "postVariableMetadata",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8169,
-                  "src": "1998:33:38",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes_memory_ptr",
-                    "typeString": "bytes"
-                  },
-                  "typeName": {
-                    "id": 8142,
-                    "name": "bytes",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1998:5:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage_ptr",
-                      "typeString": "bytes"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1983:49:38"
-            },
-            "returnParameters": {
-              "id": 8145,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "2040:0:38"
-            },
-            "scope": 8191,
-            "src": "1951:327:38",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "public"
-          },
-          {
-            "body": {
-              "id": 8179,
-              "nodeType": "Block",
-              "src": "2372:31:38",
-              "statements": [
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "id": 8177,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "lValueRequested": false,
-                    "leftHandSide": {
-                      "argumentTypes": null,
-                      "id": 8175,
-                      "name": "posts",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 8173,
-                      "src": "2382:5:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                        "typeString": "address[] memory"
-                      }
-                    },
-                    "nodeType": "Assignment",
-                    "operator": "=",
-                    "rightHandSide": {
-                      "argumentTypes": null,
-                      "id": 8176,
-                      "name": "_posts",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 8002,
-                      "src": "2390:6:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_array$_t_address_$dyn_storage",
-                        "typeString": "address[] storage ref"
-                      }
-                    },
-                    "src": "2382:14:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                      "typeString": "address[] memory"
-                    }
-                  },
-                  "id": 8178,
-                  "nodeType": "ExpressionStatement",
-                  "src": "2382:14:38"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 8180,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getPosts",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 8170,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "2324:2:38"
-            },
-            "returnParameters": {
-              "id": 8174,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 8173,
-                  "name": "posts",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8180,
-                  "src": "2348:22:38",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                    "typeString": "address[]"
-                  },
-                  "typeName": {
-                    "baseType": {
-                      "id": 8171,
-                      "name": "address",
-                      "nodeType": "ElementaryTypeName",
-                      "src": "2348:7:38",
-                      "stateMutability": "nonpayable",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "id": 8172,
-                    "length": null,
-                    "nodeType": "ArrayTypeName",
-                    "src": "2348:9:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
-                      "typeString": "address[]"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2347:24:38"
-            },
-            "scope": 8191,
-            "src": "2307:96:38",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "public"
-          },
-          {
-            "body": {
-              "id": 8189,
-              "nodeType": "Block",
-              "src": "2479:45:38",
-              "statements": [
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "id": 8187,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "lValueRequested": false,
-                    "leftHandSide": {
-                      "argumentTypes": null,
-                      "id": 8185,
-                      "name": "postRegistry",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 8183,
-                      "src": "2489:12:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "nodeType": "Assignment",
-                    "operator": "=",
-                    "rightHandSide": {
-                      "argumentTypes": null,
-                      "id": 8186,
-                      "name": "_postRegistry",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 8004,
-                      "src": "2504:13:38",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "src": "2489:28:38",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "id": 8188,
-                  "nodeType": "ExpressionStatement",
-                  "src": "2489:28:38"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 8190,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getPostRegistry",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 8181,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "2433:2:38"
-            },
-            "returnParameters": {
-              "id": 8184,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 8183,
-                  "name": "postRegistry",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8190,
-                  "src": "2457:20:38",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8182,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2457:7:38",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2456:22:38"
-            },
-            "scope": 8191,
-            "src": "2409:115:38",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "public"
-          }
-        ],
-        "scope": 8192,
-        "src": "193:2334:38"
-      }
-    ],
-    "src": "0:2528:38"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.592Z"
-}
\ No newline at end of file
diff --git a/build/Feed_Factory.json b/build/Feed_Factory.json
deleted file mode 100644
index 709b35f8..00000000
--- a/build/Feed_Factory.json
+++ /dev/null
@@ -1,4025 +0,0 @@
-{
-  "contractName": "Feed_Factory",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getTemplate",
-      "outputs": [
-        {
-          "name": "template",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "name": "getInstanceCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceRegistry",
-      "outputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInitdataABI",
-      "outputs": [
-        {
-          "name": "initdataABI",
-          "type": "string"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../modules/Factory.sol\";\nimport \"./Feed.sol\";\n\n\ncontract Feed_Factory is Factory {\n\n    constructor(address instanceRegistry) public {\n        // deploy template contract\n        address templateContract = address(new Feed());\n        // set instance type\n        bytes4 instanceType = bytes4(keccak256(bytes('Post')));\n        // set initdataABI\n        string memory initdataABI = '(address,address,bytes)';\n        // initialize factory params\n        Factory._initialize(instanceRegistry, templateContract, instanceType, initdataABI);\n    }\n\n    event ExplicitInitData(address operator, address postRegistry, bytes feedStaticMetadata);\n\n    function create(bytes memory callData) public returns (address instance) {\n        // deploy instance\n        instance = Factory._create(callData);\n    }\n\n    function createEncoded(bytes memory initdata) public returns (address instance) {\n        // decode initdata\n        (\n            address operator,\n            address postRegistry,\n            bytes memory feedStaticMetadata\n        ) = abi.decode(initdata, (address,address,bytes));\n\n        // call explicit create\n        instance = createExplicit(operator, postRegistry, feedStaticMetadata);\n    }\n\n    function createExplicit(\n        address operator,\n        address postRegistry,\n        bytes memory feedStaticMetadata\n    ) public returns (address instance) {\n        // declare template in memory\n        Feed template;\n\n        // construct the data payload used when initializing the new contract.\n        bytes memory callData = abi.encodeWithSelector(\n            template.initialize.selector, // selector\n            operator,\n            postRegistry,\n            feedStaticMetadata\n        );\n\n        // deploy instance\n        instance = Factory._create(callData);\n\n        // emit event\n        emit ExplicitInitData(operator, postRegistry, feedStaticMetadata);\n    }\n\n}\n",
-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Feed_Factory.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Feed_Factory.sol",
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-        8329
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-    "id": 8330,
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-          "solidity",
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-          ".0"
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-        "src": "0:23:39"
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-        "file": "../modules/Factory.sol",
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-              "name": "Factory",
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-                "typeString": "contract Factory"
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-          8191
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-          6053,
-          4049
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-                        "referencedDeclaration": null,
-                        "src": "1618:28:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes4",
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-                        "referencedDeclaration": 8292,
-                        "src": "1694:12:39",
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-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
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-                        "argumentTypes": null,
-                        "id": 8311,
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-                        "referencedDeclaration": 8294,
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-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bytes4",
-                          "typeString": "bytes4"
-                        },
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
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-                      "expression": {
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-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 11051,
-                        "src": "1582:3:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_magic_abi",
-                          "typeString": "abi"
-                        }
-                      },
-                      "id": 8305,
-                      "isConstant": false,
-                      "isLValue": false,
-                      "isPure": true,
-                      "lValueRequested": false,
-                      "memberName": "encodeWithSelector",
-                      "nodeType": "MemberAccess",
-                      "referencedDeclaration": null,
-                      "src": "1582:22:39",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$",
-                        "typeString": "function (bytes4) pure returns (bytes memory)"
-                      }
-                    },
-                    "id": 8312,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
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-                    "src": "1582:166:39",
-                    "typeDescriptions": {
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-                      "typeString": "bytes memory"
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-                  "src": "1558:190:39"
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-                      "src": "1786:8:39",
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-                          "argumentTypes": null,
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-                        "expression": {
-                          "argumentTypes": null,
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-                          "name": "Factory",
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-                          "overloadedDeclarations": [],
-                          "referencedDeclaration": 6053,
-                          "src": "1797:7:39",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_type$_t_contract$_Factory_$6053_$",
-                            "typeString": "type(contract Factory)"
-                          }
-                        },
-                        "id": 8316,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": false,
-                        "lValueRequested": false,
-                        "memberName": "_create",
-                        "nodeType": "MemberAccess",
-                        "referencedDeclaration": 5890,
-                        "src": "1797:15:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$returns$_t_address_$",
-                          "typeString": "function (bytes memory) returns (address)"
-                        }
-                      },
-                      "id": 8318,
-                      "isConstant": false,
-                      "isLValue": false,
-                      "isPure": false,
-                      "kind": "functionCall",
-                      "lValueRequested": false,
-                      "names": [],
-                      "nodeType": "FunctionCall",
-                      "src": "1797:25:39",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "src": "1786:36:39",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "id": 8320,
-                  "nodeType": "ExpressionStatement",
-                  "src": "1786:36:39"
-                },
-                {
-                  "eventCall": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "id": 8322,
-                        "name": "operator",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 8290,
-                        "src": "1877:8:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 8323,
-                        "name": "postRegistry",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 8292,
-                        "src": "1887:12:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 8324,
-                        "name": "feedStaticMetadata",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 8294,
-                        "src": "1901:18:39",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "id": 8321,
-                      "name": "ExplicitInitData",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 8242,
-                      "src": "1860:16:39",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_bytes_memory_ptr_$returns$__$",
-                        "typeString": "function (address,address,bytes memory)"
-                      }
-                    },
-                    "id": 8325,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "1860:60:39",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_tuple$__$",
-                      "typeString": "tuple()"
-                    }
-                  },
-                  "id": 8326,
-                  "nodeType": "EmitStatement",
-                  "src": "1855:65:39"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 8328,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "createExplicit",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 8295,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 8290,
-                  "name": "operator",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8328,
-                  "src": "1279:16:39",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8289,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1279:7:39",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8292,
-                  "name": "postRegistry",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8328,
-                  "src": "1305:20:39",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8291,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1305:7:39",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
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-                  "value": null,
-                  "visibility": "internal"
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-                  "src": "1335:31:39",
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-            "visibility": "public"
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-        "src": "81:1849:39"
-      }
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-    "src": "0:1931:39"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.546Z"
-}
\ No newline at end of file
diff --git a/build/OneWayGriefing.json b/build/OneWayGriefing.json
deleted file mode 100644
index 5e313fb1..00000000
--- a/build/OneWayGriefing.json
+++ /dev/null
@@ -1,11703 +0,0 @@
-{
-  "contractName": "OneWayGriefing",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getToken",
-      "outputs": [
-        {
-          "name": "token",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "name": "punishment",
-          "type": "uint256"
-        },
-        {
-          "name": "ratioType",
-          "type": "uint8"
-        }
-      ],
-      "name": "getCost",
-      "outputs": [
-        {
-          "name": "cost",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "pure",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "name": "cost",
-          "type": "uint256"
-        },
-        {
-          "name": "ratioType",
-          "type": "uint8"
-        }
-      ],
-      "name": "getPunishment",
-      "outputs": [
-        {
-          "name": "punishment",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "pure",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getDeadline",
-      "outputs": [
-        {
-          "name": "deadline",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "staker",
-          "type": "address"
-        }
-      ],
-      "name": "getRatio",
-      "outputs": [
-        {
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "name": "ratioType",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "isAfterDeadline",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getMetadata",
-      "outputs": [
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "staker",
-          "type": "address"
-        }
-      ],
-      "name": "getStake",
-      "outputs": [
-        {
-          "name": "stake",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "hasActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "isOver",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getLength",
-      "outputs": [
-        {
-          "name": "length",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "timeRemaining",
-      "outputs": [
-        {
-          "name": "time",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getOperator",
-      "outputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isCreator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "name": "OperatorUpdated",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "StaticMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "VariableMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staker",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "ratioType",
-          "type": "uint8"
-        }
-      ],
-      "name": "RatioSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "punisher",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "staker",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "punishment",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "cost",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "message",
-          "type": "bytes"
-        }
-      ],
-      "name": "Griefed",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "token",
-          "type": "address"
-        }
-      ],
-      "name": "TokenSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staker",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "funder",
-          "type": "address"
-        },
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../helpers/openzeppelin-solidity/math/SafeMath.sol\";\nimport \"../helpers/openzeppelin-solidity/token/ERC20/IERC20.sol\";\nimport \"../modules/Countdown.sol\";\nimport \"../modules/Griefing.sol\";\nimport \"../modules/Metadata.sol\";\nimport \"../modules/Operated.sol\";\nimport \"../modules/Template.sol\";\n\n/* Immediately engage with specific buyer\n * - Stake can be increased at any time.\n * - Request to end agreement and recover stake requires cooldown period to complete.\n * - Counterparty can greif the staker at predefined ratio.\n *\n * NOTE:\n * - This top level contract should only perform access control and state transitions\n *\n */\ncontract OneWayGriefing is Countdown, Griefing, Metadata, Operated, Template {\n\n    using SafeMath for uint256;\n\n    Data private _data;\n    struct Data {\n        address staker;\n        address counterparty;\n    }\n\n    function initialize(\n        address token,\n        address operator,\n        address staker,\n        address counterparty,\n        uint256 ratio,\n        Griefing.RatioType ratioType,\n        uint256 countdownLength,\n        bytes memory staticMetadata\n    ) public initializeTemplate() {\n        // set storage values\n        _data.staker = staker;\n        _data.counterparty = counterparty;\n\n        // set operator\n        if (operator != address(0)) {\n            Operated._setOperator(operator);\n            Operated._activateOperator();\n        }\n\n        // set token used for staking\n        Staking._setToken(token);\n\n        // set griefing ratio\n        Griefing._setRatio(staker, ratio, ratioType);\n\n        // set countdown length\n        Countdown._setLength(countdownLength);\n\n        // set static metadata\n        Metadata._setStaticMetadata(staticMetadata);\n    }\n\n    // state functions\n\n    function setVariableMetadata(bytes memory variableMetadata) public {\n        // restrict access\n        require(isStaker(msg.sender) || Operated.isActiveOperator(msg.sender), \"only staker or active operator\");\n\n        // update metadata\n        Metadata._setVariableMetadata(variableMetadata);\n    }\n\n    function increaseStake(uint256 currentStake, uint256 amountToAdd) public {\n        // restrict access\n        require(isStaker(msg.sender) || Operated.isActiveOperator(msg.sender), \"only staker or active operator\");\n\n        // require agreement is not ended\n        require(!Countdown.isOver(), \"agreement ended\");\n\n        // add stake\n        Staking._addStake(_data.staker, msg.sender, currentStake, amountToAdd);\n    }\n\n    function reward(uint256 currentStake, uint256 amountToAdd) public {\n        // restrict access\n        require(isCounterparty(msg.sender) || Operated.isActiveOperator(msg.sender), \"only counterparty or active operator\");\n\n        // require agreement is not ended\n        require(!Countdown.isOver(), \"agreement ended\");\n\n        // add stake\n        Staking._addStake(_data.staker, msg.sender, currentStake, amountToAdd);\n    }\n\n    function punish(address from, uint256 punishment, bytes memory message) public returns (uint256 cost) {\n        // restrict access\n        require(isCounterparty(msg.sender) || Operated.isActiveOperator(msg.sender), \"only counterparty or active operator\");\n\n        // require agreement is not ended\n        require(!Countdown.isOver(), \"agreement ended\");\n\n        // execute griefing\n        cost = Griefing._grief(from, _data.staker, punishment, message);\n    }\n\n    function startCountdown() public returns (uint256 deadline) {\n        // restrict access\n        require(isStaker(msg.sender) || Operated.isActiveOperator(msg.sender), \"only staker or active operator\");\n\n        // require countdown is not started\n        require(Deadline.getDeadline() == 0, \"deadline already set\");\n\n        // start countdown\n        deadline = Countdown._start();\n    }\n\n    function retrieveStake(address recipient) public returns (uint256 amount) {\n        // restrict access\n        require(isStaker(msg.sender) || Operated.isActiveOperator(msg.sender), \"only staker or active operator\");\n\n        // require deadline is passed\n        require(Deadline.isAfterDeadline(),\"deadline not passed\");\n\n        // retrieve stake\n        amount = Staking._takeFullStake(_data.staker, recipient);\n    }\n\n    function transferOperator(address operator) public {\n        // restrict access\n        require(Operated.isActiveOperator(msg.sender), \"only active operator\");\n\n        // transfer operator\n        Operated._transferOperator(operator);\n    }\n\n    function renouceOperator() public {\n        // restrict access\n        require(Operated.isActiveOperator(msg.sender), \"only active operator\");\n\n        // transfer operator\n        Operated._renouceOperator();\n    }\n\n    // view functions\n\n    function isStaker(address caller) public view returns (bool validity) {\n        validity = (caller == _data.staker);\n    }\n\n    function isCounterparty(address caller) public view returns (bool validity) {\n        validity = (caller == _data.counterparty);\n    }\n}\n",
-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/agreements/OneWayGriefing.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/agreements/OneWayGriefing.sol",
-    "exportedSymbols": {
-      "OneWayGriefing": [
-        2006
-      ]
-    },
-    "id": 2007,
-    "nodeType": "SourceUnit",
-    "nodes": [
-      {
-        "id": 1603,
-        "literals": [
-          "solidity",
-          "^",
-          "0.5",
-          ".0"
-        ],
-        "nodeType": "PragmaDirective",
-        "src": "0:23:2"
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/helpers/openzeppelin-solidity/math/SafeMath.sol",
-        "file": "../helpers/openzeppelin-solidity/math/SafeMath.sol",
-        "id": 1604,
-        "nodeType": "ImportDirective",
-        "scope": 2007,
-        "sourceUnit": 4967,
-        "src": "25:60:2",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/helpers/openzeppelin-solidity/token/ERC20/IERC20.sol",
-        "file": "../helpers/openzeppelin-solidity/token/ERC20/IERC20.sol",
-        "id": 1605,
-        "nodeType": "ImportDirective",
-        "scope": 2007,
-        "sourceUnit": 5535,
-        "src": "86:65:2",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
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-              "src": "4797:15:2"
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-            "scope": 2006,
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-            "stateMutability": "view",
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-          {
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-                      "argumentTypes": null,
-                      "components": [
-                        {
-                          "argumentTypes": null,
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-                          },
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-                              }
-                            },
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-    "src": "0:5008:2"
-  },
-  "compiler": {
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-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
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-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.679Z"
-}
\ No newline at end of file
diff --git a/build/OneWayGriefing_Factory.json b/build/OneWayGriefing_Factory.json
deleted file mode 100644
index 91c6a710..00000000
--- a/build/OneWayGriefing_Factory.json
+++ /dev/null
@@ -1,5487 +0,0 @@
-{
-  "contractName": "OneWayGriefing_Factory",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getTemplate",
-      "outputs": [
-        {
-          "name": "template",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "name": "getInstanceCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceRegistry",
-      "outputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInitdataABI",
-      "outputs": [
-        {
-          "name": "initdataABI",
-          "type": "string"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstance",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "staker",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "counterparty",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "ratioType",
-          "type": "uint8"
-        },
-        {
-          "indexed": false,
-          "name": "countdownLength",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "ExplicitInitData",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "callData",
-          "type": "bytes"
-        }
-      ],
-      "name": "InstanceCreated",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "callData",
-          "type": "bytes"
-        }
-      ],
-      "name": "create",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "initdata",
-          "type": "bytes"
-        }
-      ],
-      "name": "createEncoded",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "token",
-          "type": "address"
-        },
-        {
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "name": "staker",
-          "type": "address"
-        },
-        {
-          "name": "counterparty",
-          "type": "address"
-        },
-        {
-          "name": "ratio",
-          "type": "uint256"
-        },
-        {
-          "name": "ratioType",
-          "type": "uint8"
-        },
-        {
-          "name": "countdownLength",
-          "type": "uint256"
-        },
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "createExplicit",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../modules/Factory.sol\";\nimport \"./OneWayGriefing.sol\";\n\n\ncontract OneWayGriefing_Factory is Factory {\n\n    constructor(address instanceRegistry) public {\n        // deploy template contract\n        address templateContract = address(new OneWayGriefing());\n        // set instance type\n        bytes4 instanceType = bytes4(keccak256(bytes('Agreement')));\n        // set initdataABI\n        string memory initdataABI = '(address,address,address,address,uint256,uint8,uint256,bytes)';\n        // initialize factory params\n        Factory._initialize(instanceRegistry, templateContract, instanceType, initdataABI);\n    }\n\n    event ExplicitInitData(address indexed staker, address indexed counterparty, address indexed operator, uint256 ratio, Griefing.RatioType ratioType, uint256 countdownLength, bytes staticMetadata);\n\n    function create(bytes memory callData) public returns (address instance) {\n        // deploy instance\n        instance = Factory._create(callData);\n    }\n\n    function createEncoded(bytes memory initdata) public returns (address instance) {\n        // decode initdata\n        (\n            address token,\n            address operator,\n            address staker,\n            address counterparty,\n            uint256 ratio,\n            Griefing.RatioType ratioType, // uint8\n            uint256 countdownLength,\n            bytes memory staticMetadata\n        ) = abi.decode(initdata, (address,address,address,address,uint256,Griefing.RatioType,uint256,bytes));\n\n        // call explicit create\n        instance = createExplicit(token, operator, staker, counterparty, ratio, ratioType, countdownLength, staticMetadata);\n    }\n\n    function createExplicit(\n        address token,\n        address operator,\n        address staker,\n        address counterparty,\n        uint256 ratio,\n        Griefing.RatioType ratioType, // uint8\n        uint256 countdownLength,\n        bytes memory staticMetadata\n    ) public returns (address instance) {\n        // declare template in memory\n        OneWayGriefing template;\n\n        // construct the data payload used when initializing the new contract.\n        bytes memory callData = abi.encodeWithSelector(\n            template.initialize.selector, // selector\n            token,           // token\n            operator,        // operator\n            staker,          // staker\n            counterparty,    // counterparty\n            ratio,           // ratio\n            ratioType,       // ratioType\n            countdownLength, // countdownLength\n            staticMetadata   // staticMetadata\n        );\n\n        // deploy instance\n        instance = Factory._create(callData);\n\n        // emit event\n        emit ExplicitInitData(staker, counterparty, operator, ratio, ratioType, countdownLength, staticMetadata);\n    }\n\n}\n",
-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/agreements/OneWayGriefing_Factory.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/agreements/OneWayGriefing_Factory.sol",
-    "exportedSymbols": {
-      "OneWayGriefing_Factory": [
-        2192
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-    },
-    "id": 2193,
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-          ".0"
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-        "src": "0:23:3"
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-        "file": "../modules/Factory.sol",
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-        "sourceUnit": 6054,
-        "src": "25:32:3",
-        "symbolAliases": [],
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-        "sourceUnit": 2007,
-        "src": "58:30:3",
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-              "id": 2011,
-              "name": "Factory",
-              "nodeType": "UserDefinedTypeName",
-              "referencedDeclaration": 6053,
-              "src": "126:7:3",
-              "typeDescriptions": {
-                "typeIdentifier": "t_contract$_Factory_$6053",
-                "typeString": "contract Factory"
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-            },
-            "id": 2012,
-            "nodeType": "InheritanceSpecifier",
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-          6053,
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-              "statements": [
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-                          "src": "267:18:3",
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-                            "typeString": "function () returns (contract OneWayGriefing)"
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-                          "typeString": "function (bytes memory) returns (address)"
-                        }
-                      },
-                      "id": 2177,
-                      "isConstant": false,
-                      "isLValue": false,
-                      "isPure": false,
-                      "kind": "functionCall",
-                      "lValueRequested": false,
-                      "names": [],
-                      "nodeType": "FunctionCall",
-                      "src": "2654:25:3",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "src": "2643:36:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "id": 2179,
-                  "nodeType": "ExpressionStatement",
-                  "src": "2643:36:3"
-                },
-                {
-                  "eventCall": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "id": 2181,
-                        "name": "staker",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2138,
-                        "src": "2734:6:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2182,
-                        "name": "counterparty",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2140,
-                        "src": "2742:12:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2183,
-                        "name": "operator",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2136,
-                        "src": "2756:8:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2184,
-                        "name": "ratio",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2142,
-                        "src": "2766:5:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_uint256",
-                          "typeString": "uint256"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2185,
-                        "name": "ratioType",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2144,
-                        "src": "2773:9:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_enum$_RatioType_$6064",
-                          "typeString": "enum Griefing.RatioType"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2186,
-                        "name": "countdownLength",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2146,
-                        "src": "2784:15:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_uint256",
-                          "typeString": "uint256"
-                        }
-                      },
-                      {
-                        "argumentTypes": null,
-                        "id": 2187,
-                        "name": "staticMetadata",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 2148,
-                        "src": "2801:14:3",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_address",
-                          "typeString": "address"
-                        },
-                        {
-                          "typeIdentifier": "t_uint256",
-                          "typeString": "uint256"
-                        },
-                        {
-                          "typeIdentifier": "t_enum$_RatioType_$6064",
-                          "typeString": "enum Griefing.RatioType"
-                        },
-                        {
-                          "typeIdentifier": "t_uint256",
-                          "typeString": "uint256"
-                        },
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "id": 2180,
-                      "name": "ExplicitInitData",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 2065,
-                      "src": "2717:16:3",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_address_$_t_uint256_$_t_enum$_RatioType_$6064_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$",
-                        "typeString": "function (address,address,address,uint256,enum Griefing.RatioType,uint256,bytes memory)"
-                      }
-                    },
-                    "id": 2188,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "2717:99:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_tuple$__$",
-                      "typeString": "tuple()"
-                    }
-                  },
-                  "id": 2189,
-                  "nodeType": "EmitStatement",
-                  "src": "2712:104:3"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 2191,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "createExplicit",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 2149,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 2134,
-                  "name": "token",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1721:13:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 2133,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1721:7:3",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2136,
-                  "name": "operator",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1744:16:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 2135,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1744:7:3",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2138,
-                  "name": "staker",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1770:14:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 2137,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1770:7:3",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2140,
-                  "name": "counterparty",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1794:20:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 2139,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1794:7:3",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2142,
-                  "name": "ratio",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1824:13:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 2141,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1824:7:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2144,
-                  "name": "ratioType",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1847:28:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_enum$_RatioType_$6064",
-                    "typeString": "enum Griefing.RatioType"
-                  },
-                  "typeName": {
-                    "contractScope": null,
-                    "id": 2143,
-                    "name": "Griefing.RatioType",
-                    "nodeType": "UserDefinedTypeName",
-                    "referencedDeclaration": 6064,
-                    "src": "1847:18:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_enum$_RatioType_$6064",
-                      "typeString": "enum Griefing.RatioType"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2146,
-                  "name": "countdownLength",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1894:23:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 2145,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1894:7:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 2148,
-                  "name": "staticMetadata",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1927:27:3",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes_memory_ptr",
-                    "typeString": "bytes"
-                  },
-                  "typeName": {
-                    "id": 2147,
-                    "name": "bytes",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1927:5:3",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage_ptr",
-                      "typeString": "bytes"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1711:249:3"
-            },
-            "returnParameters": {
-              "id": 2152,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 2151,
-                  "name": "instance",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 2191,
-                  "src": "1977:16:3",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 2150,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1977:7:3",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1976:18:3"
-            },
-            "scope": 2192,
-            "src": "1688:1135:3",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "public"
-          }
-        ],
-        "scope": 2193,
-        "src": "91:2735:3"
-      }
-    ],
-    "src": "0:2827:3"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.597Z"
-}
\ No newline at end of file
diff --git a/build/Post.json b/build/Post.json
deleted file mode 100644
index ca24c846..00000000
--- a/build/Post.json
+++ /dev/null
@@ -1,3008 +0,0 @@
-{
-  "contractName": "Post",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getProofHash",
-      "outputs": [
-        {
-          "name": "proofHash",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getMetadata",
-      "outputs": [
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "hasActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getOperator",
-      "outputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isCreator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "Created",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "StaticMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "VariableMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "name": "OperatorUpdated",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "caller",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "proofHash",
-          "type": "bytes"
-        }
-      ],
-      "name": "ProofHashSet",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "initialize",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "setVariableMetadata",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../modules/ProofHash.sol\";\nimport \"../modules/Metadata.sol\";\nimport \"../modules/Operated.sol\";\nimport \"../modules/Template.sol\";\n\n\ncontract Post is ProofHash, Operated, Metadata, Template {\n\n    event Created(address operator, bytes proofHash, bytes staticMetadata, bytes variableMetadata);\n\n    function initialize(\n        address operator,\n        bytes memory proofHash,\n        bytes memory staticMetadata,\n        bytes memory variableMetadata\n    ) public initializeTemplate() {\n        // set storage variables\n        ProofHash._setProofHash(proofHash);\n\n        // set operator\n        if (operator != address(0)) {\n            Operated._setOperator(operator);\n            Operated._activateOperator();\n        }\n\n        // set static metadata\n        Metadata._setStaticMetadata(staticMetadata);\n\n        // set variable metadata\n        Metadata._setVariableMetadata(variableMetadata);\n\n        // emit event\n        emit Created(operator, proofHash, staticMetadata, variableMetadata);\n    }\n\n    // state functions\n\n    function setVariableMetadata(bytes memory variableMetadata) public {\n        // only active operator or creator\n        require(Template.isCreator(msg.sender) || Operated.isActiveOperator(msg.sender), \"only active operator or creator\");\n\n        // set metadata in storage\n        Metadata._setVariableMetadata(variableMetadata);\n    }\n\n}\n",
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-                      "referencedDeclaration": 6395,
-                      "src": "1348:29:40",
-                      "typeDescriptions": {
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-                        "typeString": "function (bytes memory)"
-                      }
-                    },
-                    "id": 8434,
-                    "isConstant": false,
-                    "isLValue": false,
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-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "1348:47:40",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_tuple$__$",
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-                }
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-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "setVariableMetadata",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 8413,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
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-                  "id": 8412,
-                  "name": "variableMetadata",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8437,
-                  "src": "1096:29:40",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes_memory_ptr",
-                    "typeString": "bytes"
-                  },
-                  "typeName": {
-                    "id": 8411,
-                    "name": "bytes",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1096:5:40",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage_ptr",
-                      "typeString": "bytes"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1095:31:40"
-            },
-            "returnParameters": {
-              "id": 8414,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "1134:0:40"
-            },
-            "scope": 8438,
-            "src": "1067:335:40",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "public"
-          }
-        ],
-        "scope": 8439,
-        "src": "164:1241:40"
-      }
-    ],
-    "src": "0:1406:40"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.487Z"
-}
\ No newline at end of file
diff --git a/build/Post_Factory.json b/build/Post_Factory.json
deleted file mode 100644
index 7e1152df..00000000
--- a/build/Post_Factory.json
+++ /dev/null
@@ -1,4320 +0,0 @@
-{
-  "contractName": "Post_Factory",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getTemplate",
-      "outputs": [
-        {
-          "name": "template",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "name": "getInstanceCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceRegistry",
-      "outputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInitdataABI",
-      "outputs": [
-        {
-          "name": "initdataABI",
-          "type": "string"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "startIndex",
-          "type": "uint256"
-        },
-        {
-          "name": "endIndex",
-          "type": "uint256"
-        }
-      ],
-      "name": "getPaginatedInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstance",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "ExplicitInitData",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "callData",
-          "type": "bytes"
-        }
-      ],
-      "name": "InstanceCreated",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "callData",
-          "type": "bytes"
-        }
-      ],
-      "name": "create",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "initdata",
-          "type": "bytes"
-        }
-      ],
-      "name": "createEncoded",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "createExplicit",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../modules/Factory.sol\";\nimport \"./Post.sol\";\n\n\ncontract Post_Factory is Factory {\n\n    constructor(address instanceRegistry) public {\n        // deploy template contract\n        address templateContract = address(new Post());\n        // set instance type\n        bytes4 instanceType = bytes4(keccak256(bytes('Post')));\n        // set initdataABI\n        string memory initdataABI = '(address,bytes,bytes,bytes)';\n        // initialize factory params\n        Factory._initialize(instanceRegistry, templateContract, instanceType, initdataABI);\n    }\n\n    event ExplicitInitData(address operator, bytes proofHash, bytes staticMetadata, bytes variableMetadata);\n\n    function create(bytes memory callData) public returns (address instance) {\n        // deploy instance\n        instance = Factory._create(callData);\n    }\n\n    function createEncoded(bytes memory initdata) public returns (address instance) {\n        // decode initdata\n        (\n            address operator,\n            bytes memory proofHash,\n            bytes memory staticMetadata,\n            bytes memory variableMetadata\n        ) = abi.decode(initdata, (address,bytes,bytes,bytes));\n\n        // call explicit create\n        instance = createExplicit(operator, proofHash, staticMetadata, variableMetadata);\n    }\n\n    function createExplicit(\n        address operator,\n        bytes memory proofHash,\n        bytes memory staticMetadata,\n        bytes memory variableMetadata\n    ) public returns (address instance) {\n        // declare template in memory\n        Post template;\n\n        // construct the data payload used when initializing the new contract.\n        bytes memory callData = abi.encodeWithSelector(\n            template.initialize.selector, // selector\n            operator,\n            proofHash,\n            staticMetadata,\n            variableMetadata\n        );\n\n        // deploy instance\n        instance = Factory._create(callData);\n\n        // emit event\n        emit ExplicitInitData(operator, proofHash, staticMetadata, variableMetadata);\n    }\n\n}\n",
-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Post_Factory.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Post_Factory.sol",
-    "exportedSymbols": {
-      "Post_Factory": [
-        8586
-      ]
-    },
-    "id": 8587,
-    "nodeType": "SourceUnit",
-    "nodes": [
-      {
-        "id": 8440,
-        "literals": [
-          "solidity",
-          "^",
-          "0.5",
-          ".0"
-        ],
-        "nodeType": "PragmaDirective",
-        "src": "0:23:41"
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/modules/Factory.sol",
-        "file": "../modules/Factory.sol",
-        "id": 8441,
-        "nodeType": "ImportDirective",
-        "scope": 8587,
-        "sourceUnit": 6054,
-        "src": "25:32:41",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/posts/Post.sol",
-        "file": "./Post.sol",
-        "id": 8442,
-        "nodeType": "ImportDirective",
-        "scope": 8587,
-        "sourceUnit": 8439,
-        "src": "58:20:41",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
-        "baseContracts": [
-          {
-            "arguments": null,
-            "baseName": {
-              "contractScope": null,
-              "id": 8443,
-              "name": "Factory",
-              "nodeType": "UserDefinedTypeName",
-              "referencedDeclaration": 6053,
-              "src": "106:7:41",
-              "typeDescriptions": {
-                "typeIdentifier": "t_contract$_Factory_$6053",
-                "typeString": "contract Factory"
-              }
-            },
-            "id": 8444,
-            "nodeType": "InheritanceSpecifier",
-            "src": "106:7:41"
-          }
-        ],
-        "contractDependencies": [
-          4049,
-          6053,
-          8438
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-                  },
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-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
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-        "src": "81:1995:41"
-      }
-    ],
-    "src": "0:2077:41"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.555Z"
-}
\ No newline at end of file
diff --git a/build/TestPost.json b/build/TestPost.json
deleted file mode 100644
index 34839879..00000000
--- a/build/TestPost.json
+++ /dev/null
@@ -1,522 +0,0 @@
-{
-  "contractName": "TestPost",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "setVariableMetadata",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getProofHash",
-      "outputs": [
-        {
-          "name": "proofHash",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "deactivateOperator",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getMetadata",
-      "outputs": [
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "hasActiveOperator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "activateOperator",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "initialize",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getOperator",
-      "outputs": [
-        {
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "caller",
-          "type": "address"
-        }
-      ],
-      "name": "isCreator",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "proofHash",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        },
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "Created",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "staticMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "StaticMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "variableMetadata",
-          "type": "bytes"
-        }
-      ],
-      "name": "VariableMetadataSet",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "status",
-          "type": "bool"
-        }
-      ],
-      "name": "OperatorUpdated",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "caller",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "proofHash",
-          "type": "bytes"
-        }
-      ],
-      "name": "ProofHashSet",
-      "type": "event"
-    }
-  ],
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-  "source": "pragma solidity ^0.5.0;\n\nimport \"../posts/Post.sol\";\nimport \"./OperatorAccess.sol\";\n\ncontract TestPost is Post, OperatorAccess {\n}\n",
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-      {
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-        "id": 9606,
-        "nodeType": "ImportDirective",
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-        "sourceUnit": 8857,
-        "src": "53:30:55",
-        "symbolAliases": [],
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-      {
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-          {
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-            "baseName": {
-              "contractScope": null,
-              "id": 9607,
-              "name": "Post",
-              "nodeType": "UserDefinedTypeName",
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-              "src": "106:4:55",
-              "typeDescriptions": {
-                "typeIdentifier": "t_contract$_Post_$8438",
-                "typeString": "contract Post"
-              }
-            },
-            "id": 9608,
-            "nodeType": "InheritanceSpecifier",
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-    ],
-    "src": "0:131:55"
-  },
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-    "exportedSymbols": {
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-    "nodes": [
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-        "src": "0:23:55"
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-      {
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-        "file": "../posts/Post.sol",
-        "id": 9605,
-        "nodeType": "ImportDirective",
-        "scope": 9612,
-        "sourceUnit": 8439,
-        "src": "25:27:55",
-        "symbolAliases": [],
-        "unitAlias": ""
-      },
-      {
-        "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/test-contracts/OperatorAccess.sol",
-        "file": "./OperatorAccess.sol",
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-                "typeString": "contract Post"
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-        "name": "TestPost",
-        "nodeType": "ContractDefinition",
-        "nodes": [],
-        "scope": 9612,
-        "src": "85:45:55"
-      }
-    ],
-    "src": "0:131:55"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.376Z"
-}
\ No newline at end of file
diff --git a/build/iFactory.json b/build/iFactory.json
deleted file mode 100644
index cb037740..00000000
--- a/build/iFactory.json
+++ /dev/null
@@ -1,1947 +0,0 @@
-{
-  "contractName": "iFactory",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "initABI",
-          "type": "string"
-        },
-        {
-          "indexed": false,
-          "name": "initData",
-          "type": "bytes"
-        }
-      ],
-      "name": "InstanceCreated",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "initData",
-          "type": "bytes"
-        }
-      ],
-      "name": "create",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInitdataABI",
-      "outputs": [
-        {
-          "name": "initABI",
-          "type": "string"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceRegistry",
-      "outputs": [
-        {
-          "name": "instanceRegistry",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getTemplate",
-      "outputs": [
-        {
-          "name": "template",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "name": "getInstanceCreator",
-      "outputs": [
-        {
-          "name": "creator",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceType",
-      "outputs": [
-        {
-          "name": "instanceType",
-          "type": "bytes4"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstanceCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "index",
-          "type": "uint256"
-        }
-      ],
-      "name": "getInstance",
-      "outputs": [
-        {
-          "name": "instance",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getInstances",
-      "outputs": [
-        {
-          "name": "instances",
-          "type": "address[]"
-        }
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\ No newline at end of file
diff --git a/build/iNMR.json b/build/iNMR.json
deleted file mode 100644
index 5f5c10a2..00000000
--- a/build/iNMR.json
+++ /dev/null
@@ -1,2138 +0,0 @@
-{
-  "contractName": "iNMR",
-  "abi": [
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "totalSupply",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_owner",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_owner",
-          "type": "address"
-        },
-        {
-          "name": "_spender",
-          "type": "address"
-        }
-      ],
-      "name": "allowance",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_to",
-          "type": "address"
-        },
-        {
-          "name": "_value",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_from",
-          "type": "address"
-        },
-        {
-          "name": "_to",
-          "type": "address"
-        },
-        {
-          "name": "_value",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_spender",
-          "type": "address"
-        },
-        {
-          "name": "_value",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_spender",
-          "type": "address"
-        },
-        {
-          "name": "_oldValue",
-          "type": "uint256"
-        },
-        {
-          "name": "_newValue",
-          "type": "uint256"
-        }
-      ],
-      "name": "changeApproval",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_value",
-          "type": "uint256"
-        }
-      ],
-      "name": "mint",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "_to",
-          "type": "address"
-        },
-        {
-          "name": "_value",
-          "type": "uint256"
-        }
-      ],
-      "name": "numeraiTransfer",
-      "outputs": [
-        {
-          "name": "ok",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
-  "bytecode": "0x",
-  "deployedBytecode": "0x",
-  "sourceMap": "",
-  "deployedSourceMap": "",
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-  "sourcePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/modules/iNMR.sol",
-  "ast": {
-    "absolutePath": "/Users/hao/Desktop/erasure-next-contracts/contracts/modules/iNMR.sol",
-    "exportedSymbols": {
-      "iNMR": [
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-                    "nodeType": "ElementaryTypeName",
-                    "src": "299:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
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-                  },
-                  "value": null,
-                  "visibility": "internal"
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-              "src": "285:29:36"
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-            "returnParameters": {
-              "id": 7786,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7785,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7787,
-                  "src": "333:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 7784,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "333:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
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-                  "value": null,
-                  "visibility": "internal"
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-              "src": "332:9:36"
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-            "scope": 7835,
-            "src": "268:74:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7798,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "transferFrom",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7794,
-              "nodeType": "ParameterList",
-              "parameters": [
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-                  "id": 7789,
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-                  "nodeType": "VariableDeclaration",
-                  "scope": 7798,
-                  "src": "369:13:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
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-                  "typeName": {
-                    "id": 7788,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "369:7:36",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
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-                  "value": null,
-                  "visibility": "internal"
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-                {
-                  "constant": false,
-                  "id": 7791,
-                  "name": "_to",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7798,
-                  "src": "384:11:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 7790,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "384:7:36",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
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-                  "visibility": "internal"
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-                {
-                  "constant": false,
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-                  "name": "_value",
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-                  "scope": 7798,
-                  "src": "397:14:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7792,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "397:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "368:44:36"
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-            "returnParameters": {
-              "id": 7797,
-              "nodeType": "ParameterList",
-              "parameters": [
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-                  "constant": false,
-                  "id": 7796,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7798,
-                  "src": "431:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
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-                  "typeName": {
-                    "id": 7795,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "431:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
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-                  "visibility": "internal"
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-              ],
-              "src": "430:9:36"
-            },
-            "scope": 7835,
-            "src": "347:93:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7807,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "approve",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7803,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7800,
-                  "name": "_spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7807,
-                  "src": "462:16:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 7799,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "462:7:36",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 7802,
-                  "name": "_value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7807,
-                  "src": "480:14:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7801,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "480:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "461:34:36"
-            },
-            "returnParameters": {
-              "id": 7806,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7805,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7807,
-                  "src": "514:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 7804,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "514:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "513:9:36"
-            },
-            "scope": 7835,
-            "src": "445:78:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7818,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "changeApproval",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7814,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7809,
-                  "name": "_spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7818,
-                  "src": "552:16:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 7808,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "552:7:36",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 7811,
-                  "name": "_oldValue",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7818,
-                  "src": "570:17:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7810,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "570:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 7813,
-                  "name": "_newValue",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7818,
-                  "src": "589:17:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7812,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "589:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "551:56:36"
-            },
-            "returnParameters": {
-              "id": 7817,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7816,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7818,
-                  "src": "626:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 7815,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "626:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "625:9:36"
-            },
-            "scope": 7835,
-            "src": "528:107:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7825,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "mint",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7821,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7820,
-                  "name": "_value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7825,
-                  "src": "667:14:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7819,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "667:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "666:16:36"
-            },
-            "returnParameters": {
-              "id": 7824,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7823,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7825,
-                  "src": "701:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 7822,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "701:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "700:9:36"
-            },
-            "scope": 7835,
-            "src": "653:57:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7834,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "numeraiTransfer",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7830,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7827,
-                  "name": "_to",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7834,
-                  "src": "756:11:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 7826,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "756:7:36",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 7829,
-                  "name": "_value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7834,
-                  "src": "769:14:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7828,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "769:7:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "755:29:36"
-            },
-            "returnParameters": {
-              "id": 7833,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7832,
-                  "name": "ok",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7834,
-                  "src": "803:7:36",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 7831,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "803:4:36",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "802:9:36"
-            },
-            "scope": 7835,
-            "src": "731:81:36",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          }
-        ],
-        "scope": 7836,
-        "src": "26:788:36"
-      }
-    ],
-    "src": "0:815:36"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.415Z"
-}
\ No newline at end of file
diff --git a/build/iRegistry.json b/build/iRegistry.json
deleted file mode 100644
index 8c999fab..00000000
--- a/build/iRegistry.json
+++ /dev/null
@@ -1,3921 +0,0 @@
-{
-  "contractName": "iRegistry",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "FactoryAdded",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "FactoryRetired",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "instance",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "instanceIndex",
-          "type": "uint256"
-        },
-        {
-          "indexed": true,
-          "name": "creator",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "factoryID",
-          "type": "uint256"
-        }
-      ],
-      "name": "InstanceRegistered",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "name": "addFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "retireFactory",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getFactoryCount",
-      "outputs": [
-        {
-          "name": "count",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryStatus",
-      "outputs": [
-        {
-          "name": "status",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryID",
-      "outputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactoryData",
-      "outputs": [
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        }
-      ],
-      "name": "getFactoryAddress",
-      "outputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "factory",
-          "type": "address"
-        }
-      ],
-      "name": "getFactory",
-      "outputs": [
-        {
-          "name": "state",
-          "type": "uint8"
-        },
-        {
-          "name": "factoryID",
-          "type": "uint16"
-        },
-        {
-          "name": "extraData",
-          "type": "bytes"
-        }
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-      "payable": false,
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-                  "scope": 7952,
-                  "src": "1480:16:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint80",
-                    "typeString": "uint80"
-                  },
-                  "typeName": {
-                    "id": 7948,
-                    "name": "uint80",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1480:6:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint80",
-                      "typeString": "uint80"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1444:53:37"
-            },
-            "returnParameters": {
-              "id": 7951,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "1506:0:37"
-            },
-            "scope": 7986,
-            "src": "1427:80:37",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7957,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getInstanceType",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7953,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "1569:2:37"
-            },
-            "returnParameters": {
-              "id": 7956,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7955,
-                  "name": "instanceType",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7957,
-                  "src": "1595:19:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes4",
-                    "typeString": "bytes4"
-                  },
-                  "typeName": {
-                    "id": 7954,
-                    "name": "bytes4",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1595:6:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes4",
-                      "typeString": "bytes4"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1594:21:37"
-            },
-            "scope": 7986,
-            "src": "1545:71:37",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7962,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getInstanceCount",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7958,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "1646:2:37"
-            },
-            "returnParameters": {
-              "id": 7961,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7960,
-                  "name": "count",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7962,
-                  "src": "1672:13:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7959,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1672:7:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1671:15:37"
-            },
-            "scope": 7986,
-            "src": "1621:66:37",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7969,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getInstance",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7965,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7964,
-                  "name": "index",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7969,
-                  "src": "1713:13:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7963,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1713:7:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1712:15:37"
-            },
-            "returnParameters": {
-              "id": 7968,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7967,
-                  "name": "instance",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7969,
-                  "src": "1751:16:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 7966,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1751:7:37",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1750:18:37"
-            },
-            "scope": 7986,
-            "src": "1692:77:37",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7975,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getInstances",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7970,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "1795:2:37"
-            },
-            "returnParameters": {
-              "id": 7974,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7973,
-                  "name": "instances",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7975,
-                  "src": "1821:26:37",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                    "typeString": "address[]"
-                  },
-                  "typeName": {
-                    "baseType": {
-                      "id": 7971,
-                      "name": "address",
-                      "nodeType": "ElementaryTypeName",
-                      "src": "1821:7:37",
-                      "stateMutability": "nonpayable",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "id": 7972,
-                    "length": null,
-                    "nodeType": "ArrayTypeName",
-                    "src": "1821:9:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
-                      "typeString": "address[]"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1820:28:37"
-            },
-            "scope": 7986,
-            "src": "1774:75:37",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": null,
-            "id": 7985,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getPaginatedInstances",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 7980,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7977,
-                  "name": "startIndex",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7985,
-                  "src": "1885:18:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7976,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1885:7:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 7979,
-                  "name": "endIndex",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7985,
-                  "src": "1905:16:37",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 7978,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1905:7:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1884:38:37"
-            },
-            "returnParameters": {
-              "id": 7984,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 7983,
-                  "name": "instances",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 7985,
-                  "src": "1946:26:37",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
-                    "typeString": "address[]"
-                  },
-                  "typeName": {
-                    "baseType": {
-                      "id": 7981,
-                      "name": "address",
-                      "nodeType": "ElementaryTypeName",
-                      "src": "1946:7:37",
-                      "stateMutability": "nonpayable",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_address",
-                        "typeString": "address"
-                      }
-                    },
-                    "id": 7982,
-                    "length": null,
-                    "nodeType": "ArrayTypeName",
-                    "src": "1946:9:37",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
-                      "typeString": "address[]"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1945:28:37"
-            },
-            "scope": 7986,
-            "src": "1854:120:37",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          }
-        ],
-        "scope": 7987,
-        "src": "26:1950:37"
-      }
-    ],
-    "src": "0:1977:37"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang",
-    "optimizer": false,
-    "runs": 200
-  },
-  "networks": {},
-  "schemaVersion": "2.1.8",
-  "updatedAt": "2019-08-16T16:53:40.477Z"
-}
\ No newline at end of file
diff --git a/contracts/helpers/DecimalMath.sol b/contracts/helpers/DecimalMath.sol
index 2c014ca9..83e83e13 100644
--- a/contracts/helpers/DecimalMath.sol
+++ b/contracts/helpers/DecimalMath.sol
@@ -1,8 +1,11 @@
-// taken from https://github.com/PolymathNetwork/polymath-core, Apache v2 License
 pragma solidity ^0.5.0;
 
 import "./openzeppelin-solidity/math/SafeMath.sol";
 
+/* @title DecimalMath
+ * @dev taken from https://github.com/PolymathNetwork/polymath-core
+ * @dev Apache v2 License
+ */
 library DecimalMath {
     using SafeMath for uint256;
 
diff --git a/contracts/modules/MultiHashWrapper.sol b/contracts/modules/MultiHashWrapper.sol
index aef6b03b..88cac126 100644
--- a/contracts/modules/MultiHashWrapper.sol
+++ b/contracts/modules/MultiHashWrapper.sol
@@ -21,7 +21,17 @@ contract MultiHashWrapper {
     * @return the base58-encoded full hash
     */
     function _combineMultiHash(MultiHash memory multihash) internal pure returns (bytes memory) {
-        return abi.encode(multihash.hashFunction, multihash.digestSize, multihash.hash);
+        bytes memory out = new bytes(34);
+
+        out[0] = byte(multihash.hashFunction);
+        out[1] = byte(multihash.digestSize);
+
+        uint8 i;
+        for (i = 0; i < 32; i++) {
+          out[i+2] = multihash.hash[i];
+        }
+
+        return out;
     }
 
     /**
@@ -30,7 +40,20 @@ contract MultiHashWrapper {
     * @return MultiHash that has the hashFunction, digestSize and the hash
     */
     function _splitMultiHash(bytes memory source) internal pure returns (MultiHash memory) {
-        (uint8 hashFunction, uint8 digestSize, bytes32 hash) = abi.decode(source, (uint8,uint8,bytes32));
-        return MultiHash(hash, hashFunction, digestSize);
+        require(source.length == 34, "length of source must be 34");
+
+        uint8 hashFunction = uint8(source[0]);
+        uint8 digestSize = uint8(source[1]);
+        bytes32 hash;
+
+        assembly {
+          hash := mload(add(source, 34))
+        }
+
+        return (MultiHash({
+          hashFunction: hashFunction,
+          digestSize: digestSize,
+          hash: hash
+        }));
     }
 }
diff --git a/deployment/deploy.js b/deployment/deploy.js
index 968909ee..bec5147f 100755
--- a/deployment/deploy.js
+++ b/deployment/deploy.js
@@ -24,6 +24,10 @@ const deploy = async (network, secret) => {
   console.log(`Deployment Wallet: ${wallet.address}`);
 
   if (network == "rinkeby") {
+
+    // connect to rinkeby
+    wallet = await wallet.connect(ethers.getDefaultProvider('rinkeby'));
+
     // initialize deployer
     deployer = await new etherlime.InfuraPrivateKeyDeployer(
       wallet.privateKey,
@@ -32,6 +36,8 @@ const deploy = async (network, secret) => {
     );
     deployer.setVerifierApiKey(process.env.ETHERSCAN_API_KEY);
 
+    // contracts.Erasure_Posts.instance = await new ethers.Contract('0xEd11206a7d07601985DCC4FeD7B3284a928D022B', contracts.Erasure_Posts.artifact.abi, wallet);
+
     // deploy registries
     contracts.Erasure_Posts.instance = await deployer.deployAndVerify(contracts.Erasure_Posts.artifact, false);
     contracts.Erasure_Agreements.instance = await deployer.deployAndVerify(contracts.Erasure_Agreements.artifact, false);
@@ -118,7 +124,7 @@ const deploy = async (network, secret) => {
       userAddress,
       userAddress,
       1,
-      4,
+      2,
       100000000,
       '0x0'
   ).then(async txn => {
diff --git a/test/helpers/utils.js b/test/helpers/utils.js
index 8b99ecd3..78feba6a 100644
--- a/test/helpers/utils.js
+++ b/test/helpers/utils.js
@@ -4,7 +4,7 @@ const SpawnArtifact = require("../../build/Spawn.json");
 const hexlify = utf8str =>
   ethers.utils.hexlify(ethers.utils.toUtf8Bytes(utf8str));
 
-const createMultihashSha256 = string => {
+const createPaddedMultihashSha256 = string => {
   const hash = ethers.utils.sha256(ethers.utils.toUtf8Bytes(string));
   const sha2_256 = ethers.utils.hexZeroPad("0x12", 8); // uint8
   const bits256 = ethers.utils.hexZeroPad(ethers.utils.hexlify(64), 8);
@@ -17,6 +17,15 @@ const createMultihashSha256 = string => {
   return multihash;
 };
 
+const createMultihashSha256 = string => {
+  const hash = ethers.utils.sha256(ethers.utils.toUtf8Bytes(string));
+  const sha2_256 = "0x12"; // uint8
+  const bits256 = ethers.utils.hexlify(32);
+  const multihash = sha2_256 + bits256.substr(2) + hash.substr(2);
+
+  return multihash;
+};
+
 function createSelector(functionName, abiTypes) {
   const joinedTypes = abiTypes.join(",");
   const functionSignature = `${functionName}(${joinedTypes})`;