diff --git a/core/shared/src/main/scala/sigma/serialization/TypeSerializer.scala b/core/shared/src/main/scala/sigma/serialization/TypeSerializer.scala
index 1936bbcd9a..e56744efd6 100644
--- a/core/shared/src/main/scala/sigma/serialization/TypeSerializer.scala
+++ b/core/shared/src/main/scala/sigma/serialization/TypeSerializer.scala
@@ -5,7 +5,7 @@ import sigma.VersionContext
 import sigma.ast.SCollectionType.{CollectionTypeCode, NestedCollectionTypeCode}
 import sigma.ast._
 import sigma.util.safeNewArray
-import sigma.validation.ValidationRules.{CheckPrimitiveTypeCode, CheckTypeCode}
+import sigma.validation.ValidationRules.{CheckPrimitiveTypeCode, CheckPrimitiveTypeCodeV6, CheckTypeCode, CheckTypeCodeV6}
 
 import java.nio.charset.StandardCharsets
 
@@ -14,7 +14,12 @@ class TypeSerializer {
   import TypeSerializer._
 
   def getEmbeddableType(code: Int): SType = {
-    CheckPrimitiveTypeCode(code.toByte)
+    // todo : add unsigned bit int to embeddable id to type
+    if (VersionContext.current.isV6SoftForkActivated) {
+      CheckPrimitiveTypeCodeV6(code.toByte)
+    } else {
+      CheckPrimitiveTypeCode(code.toByte)
+    }
     embeddableIdToType(code)
   }
 
@@ -215,9 +220,13 @@ class TypeSerializer {
           }
           SFunc(tDom, tRange, tpeParams)
         case _ =>
-          // todo: 6.0: replace 1008 check with identical behavior but other opcode, to activate
-          //  ReplacedRule(1008 -> new opcode) during 6.0 activation
-          CheckTypeCode(c.toByte)
+          // the #1008 check replaced with one with identical behavior but different opcode (1018), to activate
+          //  ReplacedRule(1008 -> 1018) during 6.0 activation
+          if (VersionContext.current.isV6SoftForkActivated) {
+            CheckTypeCodeV6(c.toByte)
+          } else {
+            CheckTypeCode(c.toByte)
+          }
           NoType
       }
     }
diff --git a/core/shared/src/main/scala/sigma/validation/ValidationRules.scala b/core/shared/src/main/scala/sigma/validation/ValidationRules.scala
index 249e2fce0a..6321ae6ba6 100644
--- a/core/shared/src/main/scala/sigma/validation/ValidationRules.scala
+++ b/core/shared/src/main/scala/sigma/validation/ValidationRules.scala
@@ -1,6 +1,6 @@
 package sigma.validation
 
-import sigma.SigmaException
+import sigma.{SigmaException, VersionContext}
 import sigma.ast.{SGlobal, SOption, TypeCodes}
 import sigma.serialization.{ReaderPositionLimitExceeded, SerializerException}
 import sigma.util.Extensions.toUByte
@@ -77,7 +77,7 @@ object ValidationRules {
   /** The id of the first validation rule. Can be used as the beginning of the rules id range. */
   val FirstRuleId = 1000.toShort
 
-  object CheckPrimitiveTypeCode extends ValidationRule(1007,
+  class CheckPrimitiveTypeCodeTemplate(ruleId: Short) extends ValidationRule(ruleId,
     "Check the primitive type code is supported or is added via soft-fork")
       with SoftForkWhenCodeAdded {
     override protected lazy val settings: SigmaValidationSettings = coreSettings
@@ -93,10 +93,14 @@ object ValidationRules {
     }
   }
 
-  object CheckTypeCode extends ValidationRule(1008,
+  object CheckPrimitiveTypeCode extends CheckPrimitiveTypeCodeTemplate(1007)
+
+  object CheckPrimitiveTypeCodeV6 extends CheckPrimitiveTypeCodeTemplate(1017)
+
+  class CheckTypeCodeTemplate(ruleId: Short) extends ValidationRule(ruleId,
     "Check the non-primitive type code is supported or is added via soft-fork")
       with SoftForkWhenCodeAdded {
-    override protected lazy val settings: SigmaValidationSettings = coreSettings
+    override protected def settings: SigmaValidationSettings = coreSettings
 
     final def apply[T](typeCode: Byte): Unit = {
       checkRule()
@@ -109,10 +113,14 @@ object ValidationRules {
     }
   }
 
+  object CheckTypeCode extends CheckTypeCodeTemplate(1008)
+
+  object CheckTypeCodeV6 extends CheckTypeCodeTemplate(1018)
+
   object CheckSerializableTypeCode extends ValidationRule(1009,
     "Check the data values of the type (given by type code) can be serialized")
       with SoftForkWhenReplaced {
-    override protected lazy val settings: SigmaValidationSettings = coreSettings
+    override protected def settings: SigmaValidationSettings = coreSettings
 
     /** Creates an exception which is used as a cause when throwing a ValidationException. */
     def throwValidationException(typeCode: Byte): Nothing = {
@@ -141,7 +149,7 @@ object ValidationRules {
   object CheckTypeWithMethods extends ValidationRule(1010,
     "Check the type (given by type code) supports methods")
       with SoftForkWhenCodeAdded {
-    override protected lazy val settings: SigmaValidationSettings = coreSettings
+    override protected def settings: SigmaValidationSettings = coreSettings
 
     final def apply[T](typeCode: Byte, cond: Boolean): Unit = {
       checkRule()
@@ -160,7 +168,7 @@ object ValidationRules {
     */
   object CheckPositionLimit extends ValidationRule(1014,
     "Check that the Reader has not exceeded the position limit.") with SoftForkWhenReplaced {
-    override protected lazy val settings: SigmaValidationSettings = coreSettings
+    override protected def settings: SigmaValidationSettings = coreSettings
 
     /** Wraps the given cause into [[ValidationException]] and throws it. */
     def throwValidationException(cause: ReaderPositionLimitExceeded): Nothing = {
@@ -183,7 +191,7 @@ object ValidationRules {
     }
   }
 
-  private val ruleSpecs: Seq[ValidationRule] = Seq(
+  private val ruleSpecsV5: Seq[ValidationRule] = Seq(
     CheckPrimitiveTypeCode,
     CheckTypeCode,
     CheckSerializableTypeCode,
@@ -191,13 +199,30 @@ object ValidationRules {
     CheckPositionLimit
   )
 
+  private val ruleSpecsV6: Seq[ValidationRule] = Seq(
+    CheckPrimitiveTypeCodeV6,
+    CheckTypeCodeV6,
+    CheckSerializableTypeCode,
+    CheckTypeWithMethods,
+    CheckPositionLimit
+  )
+
+  private def ruleSpecs: Seq[ValidationRule] = {
+    if(VersionContext.current.isV6SoftForkActivated) {
+      ruleSpecsV6
+    } else {
+      ruleSpecsV5
+    }
+  }
+
   /** Validation settings that correspond to the current version of the ErgoScript implementation.
     * Different version of the code will have a different set of rules here.
     * This variable is globally available and can be use wherever checking of the rules is necessary.
     * This is immutable data structure, it can be augmented with RuleStates from block extension
     * sections of the blockchain, but that augmentation is only available in stateful context.
     */
-  val coreSettings: SigmaValidationSettings = new MapSigmaValidationSettings({
+    // todo: versioned cache here for efficiency
+  def coreSettings: SigmaValidationSettings = new MapSigmaValidationSettings({
     val map = ruleSpecs.map(r => r.id -> (r, EnabledRule)).toMap
     assert(map.size == ruleSpecs.size, s"Duplicate ruleIds ${ruleSpecs.groupBy(_.id).filter(g => g._2.length > 1)}")
     map
diff --git a/data/shared/src/main/scala/org/ergoplatform/validation/ValidationRules.scala b/data/shared/src/main/scala/org/ergoplatform/validation/ValidationRules.scala
index 9d4de47a99..4c75de6623 100644
--- a/data/shared/src/main/scala/org/ergoplatform/validation/ValidationRules.scala
+++ b/data/shared/src/main/scala/org/ergoplatform/validation/ValidationRules.scala
@@ -1,6 +1,6 @@
 package org.ergoplatform.validation
 
-import sigma.SigmaException
+import sigma.{SigmaException, VersionContext}
 import sigma.ast.{DeserializeContext, ErgoTree, MethodsContainer, SMethod}
 import sigma.ast.TypeCodes.LastConstantCode
 import sigma.serialization.{InvalidOpCode, SerializerException}
@@ -23,7 +23,7 @@ object ValidationRules {
 
   object CheckDeserializedScriptType extends ValidationRule(FirstRuleId,
     "Deserialized script should have expected type") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
     final def apply[T](d: DeserializeContext[_], script: SValue): Unit = {
       checkRule()
@@ -38,7 +38,7 @@ object ValidationRules {
 
   object CheckDeserializedScriptIsSigmaProp extends ValidationRule(1001,
     "Deserialized script should have SigmaProp type") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
     /** @param root candidate node before it is added as a root of ErgoTree */
     final def apply[T](root: SValue): Unit = {
@@ -54,7 +54,7 @@ object ValidationRules {
   object CheckValidOpCode extends ValidationRule(1002,
     "Check the opcode is supported by registered serializer or is added via soft-fork")
     with SoftForkWhenCodeAdded {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
     final def apply[T](ser: ValueSerializer[_], opCode: OpCode): Unit = {
       checkRule()
@@ -69,18 +69,18 @@ object ValidationRules {
   /** Not used since v5.0.1. */
   object CheckIsSupportedIndexExpression extends ValidationRule(1003,
     "Check the index expression for accessing collection element is supported.") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
   }
 
   /** Not used since v5.0.3  */
   object CheckCostFunc extends ValidationRule(1004,
     "Cost function should contain only operations from specified list.") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
   }
 
   object CheckCalcFunc extends ValidationRule(1005,
     "If SigmaProp.isProven method calls exists in the given function,\n then it is the last operation") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
   }
 
   /** This rule is not use in v5.x, keep the commented code below as a precise
@@ -88,7 +88,7 @@ object ValidationRules {
     */
   object CheckTupleType extends ValidationRule(1006,
     "Supported tuple type.") with SoftForkWhenReplaced {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
 //    final def apply[Ctx <: IRContext, T](ctx: Ctx)(e: ctx.Elem[_]): Unit = {
 //      checkRule()
@@ -102,9 +102,9 @@ object ValidationRules {
 //    }
   }
 
-  object CheckAndGetMethod extends ValidationRule(1011,
+  class CheckAndGetMethodTemplate(ruleId: Short) extends ValidationRule(ruleId,
     "Check the type has the declared method.") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
     final def apply[T](objType: MethodsContainer, methodId: Byte): SMethod = {
       checkRule()
@@ -128,9 +128,12 @@ object ValidationRules {
     }
   }
 
+  object CheckAndGetMethod extends CheckAndGetMethodTemplate(1011)
+  object CheckAndGetMethodV6 extends CheckAndGetMethodTemplate(1016)
+
   object CheckHeaderSizeBit extends ValidationRule(1012,
     "For version greater then 0, size bit should be set.") with SoftForkWhenReplaced {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
 
     final def apply(header: HeaderType): Unit = {
       checkRule()
@@ -146,16 +149,16 @@ object ValidationRules {
   /** Not used since v5.0.3  */
   object CheckCostFuncOperation extends ValidationRule(1013,
     "Check the opcode is allowed in cost function") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
   }
 
   /** Not used since v5.0.1  */
   object CheckLoopLevelInCostFunction extends ValidationRule(1015,
     "Check that loop level is not exceeded.") {
-    override protected lazy val settings: SigmaValidationSettings = currentSettings
+    override protected def settings: SigmaValidationSettings = currentSettings
   }
 
-  val ruleSpecs: Seq[ValidationRule] = Seq(
+  private val ruleSpecsV5: Seq[ValidationRule] = Seq(
     CheckDeserializedScriptType,
     CheckDeserializedScriptIsSigmaProp,
     CheckValidOpCode,
@@ -174,13 +177,26 @@ object ValidationRules {
     CheckLoopLevelInCostFunction
   )
 
+  // v6 validation rules below
+  private val ruleSpecsV6: Seq[ValidationRule] = {
+    ruleSpecsV5.filter(_.id != CheckAndGetMethod.id) ++ Seq(CheckAndGetMethodV6)
+  }
+
+  def ruleSpecs: Seq[ValidationRule] = {
+    if (VersionContext.current.isV6SoftForkActivated) {
+      ruleSpecsV6
+    } else {
+      ruleSpecsV5
+    }
+  }
+
   /** Validation settings that correspond to the current version of the ErgoScript implementation.
     * Different version of the code will have a different set of rules here.
     * This variable is globally available and can be use wherever checking of the rules is necessary.
     * This is immutable data structure, it can be augmented with RuleStates from block extension
     * sections of the blockchain, but that augmentation is only available in stateful context.
     */
-  val currentSettings: SigmaValidationSettings = new MapSigmaValidationSettings({
+  def currentSettings: SigmaValidationSettings = new MapSigmaValidationSettings({
     val map = ruleSpecs.map(r => r.id -> (r, EnabledRule)).toMap
     assert(map.size == ruleSpecs.size, s"Duplicate ruleIds ${ruleSpecs.groupBy(_.id).filter(g => g._2.length > 1)}")
     map
diff --git a/data/shared/src/main/scala/sigma/ast/methods.scala b/data/shared/src/main/scala/sigma/ast/methods.scala
index 4cba72e28d..f3fa1785fb 100644
--- a/data/shared/src/main/scala/sigma/ast/methods.scala
+++ b/data/shared/src/main/scala/sigma/ast/methods.scala
@@ -77,13 +77,17 @@ sealed trait MethodsContainer {
 
   /** Lookup method in this type by method's id or throw ValidationException.
     * This method can be used in trySoftForkable section to either obtain valid method
-    * or catch ValidatioinException which can be checked for soft-fork condition.
+    * or catch ValidationException which can be checked for soft-fork condition.
     * It delegate to getMethodById to lookup method.
     *
     * @see getMethodById
     */
   def methodById(methodId: Byte): SMethod = {
-    ValidationRules.CheckAndGetMethod(this, methodId)
+    if (VersionContext.current.isV6SoftForkActivated) {
+      ValidationRules.CheckAndGetMethodV6(this, methodId)
+    } else {
+      ValidationRules.CheckAndGetMethod(this, methodId)
+    }
   }
 
   /** Finds a method descriptor [[SMethod]] for the given name. */
diff --git a/data/shared/src/main/scala/sigma/data/CSigmaDslBuilder.scala b/data/shared/src/main/scala/sigma/data/CSigmaDslBuilder.scala
index 2ae4f73703..8090ad82f9 100644
--- a/data/shared/src/main/scala/sigma/data/CSigmaDslBuilder.scala
+++ b/data/shared/src/main/scala/sigma/data/CSigmaDslBuilder.scala
@@ -23,7 +23,7 @@ import java.math.BigInteger
   * @see [[SigmaDslBuilder]] for detailed descriptions
   */
 class CSigmaDslBuilder extends SigmaDslBuilder { dsl =>
-  implicit val validationSettings: SigmaValidationSettings = ValidationRules.currentSettings
+  def validationSettings: SigmaValidationSettings = ValidationRules.currentSettings
 
   override val Colls: CollBuilder = sigma.Colls
 
diff --git a/interpreter/shared/src/test/scala/org/ergoplatform/validation/ValidationSpecification.scala b/interpreter/shared/src/test/scala/org/ergoplatform/validation/ValidationSpecification.scala
index b223355c5b..47068a9102 100644
--- a/interpreter/shared/src/test/scala/org/ergoplatform/validation/ValidationSpecification.scala
+++ b/interpreter/shared/src/test/scala/org/ergoplatform/validation/ValidationSpecification.scala
@@ -3,5 +3,5 @@ package org.ergoplatform.validation
 import sigma.validation.SigmaValidationSettings
 
 trait ValidationSpecification {
-  implicit val vs: SigmaValidationSettings = ValidationRules.currentSettings
+  def vs: SigmaValidationSettings = ValidationRules.currentSettings
 }
diff --git a/sc/shared/src/test/scala/sigmastate/SoftForkabilitySpecification.scala b/sc/shared/src/test/scala/sigmastate/SoftForkabilitySpecification.scala
index c8b9f06399..bce875fd14 100644
--- a/sc/shared/src/test/scala/sigmastate/SoftForkabilitySpecification.scala
+++ b/sc/shared/src/test/scala/sigmastate/SoftForkabilitySpecification.scala
@@ -289,7 +289,7 @@ class SoftForkabilitySpecification extends SigmaTestingData
       trySoftForkable(false) {
         action
         true
-      }
+      }(vs)
     }, {
       case ve: ValidationException if ve.rule == rule => true
       case _ => false