OlympiaWhitelist Contract

This contract is the minter for HallsOfOlympia (0xeB652a847e5961D1F7FA53699693eC13C008b57B).

Specs

OlympiaWhitelist allows minting of HallsOfOlympiaNFT using either native ETH or OHM by whitelisted members.

A maximum of 2592 tokens can be minted with OHM.

Whitelisting

MerkleTree should be a list of addresses hashed with keccak256.

Deployer must call setMerkleRoot on OlympiaWhitlist after deployment.

raw input addresses

[
  '0xBcd4042DE499D14e55001CcbB24a551F3b954096',
  '0x71bE63f3384f5fb98995898A86B02Fb2426c5788'
]

addresses hashed with keccak256

[
  '0xd1c9116e78ef547bbf6d308c24c15a19c52a03bdd09355bd1156d9e86ae1e685',
  '0xb497decbca77186cd90037db453969c1cd0741d5f7776b4c1456a8de2ee3bc33'
]

merkleTree

└─ a9b69fb8e369997bebeab56efb017479a9faa6a011bd9cee7491e78314eaf991
   ├─ d1c9116e78ef547bbf6d308c24c15a19c52a03bdd09355bd1156d9e86ae1e685
   └─ b497decbca77186cd90037db453969c1cd0741d5f7776b4c1456a8de2ee3bc33

Frontend must call mint and pass in the merkleProof for the given user.

Token payment

All payment is sent to address 0x940913C25A23FB6e2778Ec4b29110DC9f3F54fb0.

Mint price is represented by priceOneTokenEth and the priceOneTokenOhm is calculated by querying the Chainlink Oracle for the current OHM price.

Whitelisted callers can mint any number of tokens. However, only 1/3 of the totalSupply can be minted with OHM.

!! Deployer is responsible for maintaining ETH and OHM price via the setPriceEth and setPriceOhm functions.

VRF

This contract uses Chainlink VRF to generate a random offset between 1 and 7776. Offset can only be generated once.

!! Deployer is responsible for calling adding OlympiaWhitelist contract as a VRF consumer and call requestRandomWords to generate the offset

notes Rinkbey testnet:

    VRFCoordinatorV2Interface constant internal vrfCoordinator = VRFCoordinatorV2Interface(0x6168499c0cFfCaCD319c818142124B7A15E857ab);
    uint64 constant internal subscriptionId = 1902;
    bytes32 constant internal keyHash = 0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc;

Requirements after deployment

1. OlympiaWhitelist must be set as MinterRole for HallsOfOlympia
2. Deployer must set OlympiaWhitelist address as VRF consumer
3. Deployer must call requestRandomWords
4. Deployer must set the merkleRoot
5. Deployer must set isStarted to true

Testing

Tests can be run locally with npx hardhat test