diff --git a/lib/DashPlatformProtocol.js b/lib/DashPlatformProtocol.js
index dd2d0504..0a100c51 100644
--- a/lib/DashPlatformProtocol.js
+++ b/lib/DashPlatformProtocol.js
@@ -10,6 +10,7 @@ const DocumentFacade = require('./document/DocumentFacade');
 const StateTransitionFacade = require('./stateTransition/StateTransitionFacade');
 
 const IdentityFacade = require('./identity/IdentityFacade');
+const { initBlake3 } = require('./util/hash');
 
 /**
  * @class DashPlatformProtocol
@@ -43,36 +44,37 @@ class DashPlatformProtocol {
       return this.initialized;
     }
 
-    this.initialized = getRE2Class().then((RE2) => {
-      this.stateRepository = this.options.stateRepository;
-
-      this.jsonSchemaValidator = this.options.jsonSchemaValidator;
-      if (this.jsonSchemaValidator === undefined) {
-        const ajv = createAjv(RE2);
-
-        this.jsonSchemaValidator = new JsonSchemaValidator(ajv);
-      }
-
-      this.dataContract = new DataContractFacade(
-        this,
-        RE2,
-      );
-
-      this.document = new DocumentFacade(
-        this,
-      );
-
-      this.stateTransition = new StateTransitionFacade(
-        this,
-        RE2,
-      );
-
-      this.identity = new IdentityFacade(
-        this,
-      );
-
-      return true;
-    });
+    this.initialized = getRE2Class()
+      .then((RE2) => {
+        this.stateRepository = this.options.stateRepository;
+
+        this.jsonSchemaValidator = this.options.jsonSchemaValidator;
+        if (this.jsonSchemaValidator === undefined) {
+          const ajv = createAjv(RE2);
+
+          this.jsonSchemaValidator = new JsonSchemaValidator(ajv);
+        }
+
+        this.dataContract = new DataContractFacade(
+          this,
+          RE2,
+        );
+
+        this.document = new DocumentFacade(
+          this,
+        );
+
+        this.stateTransition = new StateTransitionFacade(
+          this,
+          RE2,
+        );
+
+        this.identity = new IdentityFacade(
+          this,
+        );
+      })
+      .then(initBlake3)
+      .then(() => true);
 
     return this.initialized;
   }
diff --git a/lib/dataContract/DataContract.js b/lib/dataContract/DataContract.js
index c7152ff1..44bc86b5 100644
--- a/lib/dataContract/DataContract.js
+++ b/lib/dataContract/DataContract.js
@@ -1,4 +1,4 @@
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 const { encode } = require('../util/serializer');
 
 const getBinaryPropertiesFromSchema = require('./getBinaryPropertiesFromSchema');
diff --git a/lib/dataContract/generateDataContractId.js b/lib/dataContract/generateDataContractId.js
index 93dfb524..8c1ace21 100644
--- a/lib/dataContract/generateDataContractId.js
+++ b/lib/dataContract/generateDataContractId.js
@@ -1,4 +1,4 @@
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 
 /**
  * Generate data contract id based on owner id and entropy
diff --git a/lib/dataTrigger/dpnsTriggers/createDomainDataTrigger.js b/lib/dataTrigger/dpnsTriggers/createDomainDataTrigger.js
index 3c64931b..ca1efad2 100644
--- a/lib/dataTrigger/dpnsTriggers/createDomainDataTrigger.js
+++ b/lib/dataTrigger/dpnsTriggers/createDomainDataTrigger.js
@@ -1,4 +1,4 @@
-const hash = require('../../util/hash');
+const { hash } = require('../../util/hash');
 
 const DataTriggerExecutionResult = require('../DataTriggerExecutionResult');
 const DataTriggerConditionError = require('../../errors/consensus/state/dataContract/dataTrigger/DataTriggerConditionError');
diff --git a/lib/document/Document.js b/lib/document/Document.js
index ff2e03e7..127ba1d2 100644
--- a/lib/document/Document.js
+++ b/lib/document/Document.js
@@ -4,7 +4,7 @@ const lodashCloneDeepWith = require('lodash.clonedeepwith');
 
 const cloneDeepWithIdentifiers = require('../util/cloneDeepWithIdentifiers');
 
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 const { encode } = require('../util/serializer');
 const Identifier = require('../identifier/Identifier');
 
diff --git a/lib/document/generateDocumentId.js b/lib/document/generateDocumentId.js
index 82462b64..89399b97 100644
--- a/lib/document/generateDocumentId.js
+++ b/lib/document/generateDocumentId.js
@@ -1,4 +1,4 @@
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 
 /**
  * Generates document ID
diff --git a/lib/identity/Identity.js b/lib/identity/Identity.js
index e57fd8a3..9dcd3d1f 100644
--- a/lib/identity/Identity.js
+++ b/lib/identity/Identity.js
@@ -1,4 +1,4 @@
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 const { encode } = require('../util/serializer');
 const IdentityPublicKey = require('./IdentityPublicKey');
 const Identifier = require('../identifier/Identifier');
diff --git a/lib/identity/stateTransition/assetLockProof/chain/ChainAssetLockProof.js b/lib/identity/stateTransition/assetLockProof/chain/ChainAssetLockProof.js
index 063af57a..2594b838 100644
--- a/lib/identity/stateTransition/assetLockProof/chain/ChainAssetLockProof.js
+++ b/lib/identity/stateTransition/assetLockProof/chain/ChainAssetLockProof.js
@@ -1,5 +1,5 @@
 const Identifier = require('../../../../identifier/Identifier');
-const hash = require('../../../../util/hash');
+const { hash } = require('../../../../util/hash');
 
 class ChainAssetLockProof {
   /**
diff --git a/lib/identity/stateTransition/assetLockProof/instant/InstantAssetLockProof.js b/lib/identity/stateTransition/assetLockProof/instant/InstantAssetLockProof.js
index 5eb17ceb..c7893ac1 100644
--- a/lib/identity/stateTransition/assetLockProof/instant/InstantAssetLockProof.js
+++ b/lib/identity/stateTransition/assetLockProof/instant/InstantAssetLockProof.js
@@ -1,5 +1,5 @@
 const { InstantLock, Transaction } = require('@dashevo/dashcore-lib');
-const hash = require('../../../../util/hash');
+const { hash } = require('../../../../util/hash');
 const Identifier = require('../../../../identifier/Identifier');
 
 class InstantAssetLockProof {
diff --git a/lib/stateTransition/AbstractStateTransition.js b/lib/stateTransition/AbstractStateTransition.js
index 98c60dfa..f91a4583 100644
--- a/lib/stateTransition/AbstractStateTransition.js
+++ b/lib/stateTransition/AbstractStateTransition.js
@@ -1,7 +1,7 @@
 const {
   PublicKey,
   PrivateKey,
-  Signer: { sign, verifySignature },
+  Signer: { signHash, verifyHashSignature },
 } = require('@dashevo/dashcore-lib');
 
 const StateTransitionIsNotSignedError = require(
@@ -10,7 +10,7 @@ const StateTransitionIsNotSignedError = require(
 
 const stateTransitionTypes = require('./stateTransitionTypes');
 
-const hash = require('../util/hash');
+const { hash } = require('../util/hash');
 const { encode } = require('../util/serializer');
 
 const calculateStateTransitionFee = require('./calculateStateTransitionFee');
@@ -155,10 +155,10 @@ class AbstractStateTransition {
    * @return {AbstractStateTransition}
    */
   signByPrivateKey(privateKey) {
-    const data = this.toBuffer({ skipSignature: true });
+    const stHash = this.hash({ skipSignature: true });
     const privateKeyModel = new PrivateKey(privateKey);
 
-    this.setSignature(sign(data, privateKeyModel));
+    this.setSignature(signHash(stHash, privateKeyModel));
 
     return this;
   }
@@ -174,13 +174,13 @@ class AbstractStateTransition {
       throw new StateTransitionIsNotSignedError(this);
     }
 
-    const data = this.toBuffer({ skipSignature: true });
+    const stHash = this.hash({ skipSignature: true });
 
     const publicKeyModel = new PublicKey(publicKey, {});
 
     let isSignatureVerified;
     try {
-      isSignatureVerified = verifySignature(data, signature, publicKeyModel);
+      isSignatureVerified = verifyHashSignature(stHash, signature, publicKeyModel.hash);
     } catch (e) {
       isSignatureVerified = false;
     }
diff --git a/lib/stateTransition/AbstractStateTransitionIdentitySigned.js b/lib/stateTransition/AbstractStateTransitionIdentitySigned.js
index 44175dc2..75e08935 100644
--- a/lib/stateTransition/AbstractStateTransitionIdentitySigned.js
+++ b/lib/stateTransition/AbstractStateTransitionIdentitySigned.js
@@ -49,9 +49,14 @@ class AbstractStateTransitionIdentitySigned extends AbstractStateTransition {
     let privateKeyModel;
     let pubKeyBase;
 
+    let privateKeyBase = privateKey;
+    if (Buffer.isBuffer(privateKey) || Array.isArray(privateKey)) {
+      privateKeyBase = Buffer.from(privateKeyBase).toString('hex');
+    }
+
     switch (identityPublicKey.getType()) {
       case IdentityPublicKey.TYPES.ECDSA_SECP256K1:
-        privateKeyModel = new PrivateKey(privateKey);
+        privateKeyModel = new PrivateKey(privateKeyBase);
 
         /* We store compressed public key in the identity as a base64 string,
         /* and here we compare the private key used to sign the state transition
diff --git a/lib/test/bootstrap.js b/lib/test/bootstrap.js
index 7664fa28..9028b0cf 100644
--- a/lib/test/bootstrap.js
+++ b/lib/test/bootstrap.js
@@ -4,13 +4,15 @@ const sinonChai = require('sinon-chai');
 const dirtyChai = require('dirty-chai');
 const chaiAsPromised = require('chai-as-promised');
 const chaiString = require('chai-string');
+const { initBlake3 } = require('../util/hash');
 
 use(sinonChai);
 use(chaiAsPromised);
 use(dirtyChai);
 use(chaiString);
 
-beforeEach(function beforeEach() {
+beforeEach(async function beforeEach() {
+  await initBlake3();
   if (!this.sinonSandbox) {
     this.sinonSandbox = sinon.createSandbox();
   } else {
diff --git a/lib/test/fixtures/getDashPayDocumentFixture.js b/lib/test/fixtures/getDashPayDocumentFixture.js
index c7036824..478a2362 100644
--- a/lib/test/fixtures/getDashPayDocumentFixture.js
+++ b/lib/test/fixtures/getDashPayDocumentFixture.js
@@ -4,12 +4,14 @@ const generateRandomIdentifier = require('../utils/generateRandomIdentifier');
 const createDPPMock = require('../mocks/createDPPMock');
 
 const ownerId = generateRandomIdentifier();
-const dataContract = getDashPayContractFixture();
 
 /**
  * @return {Document}
  */
-function getContactRequestDocumentFixture(options = {}) {
+function getContactRequestDocumentFixture(
+  dataContract = getDashPayContractFixture(),
+  options = {},
+) {
   const factory = new DocumentFactory(
     createDPPMock(),
     () => ({
@@ -33,5 +35,3 @@ function getContactRequestDocumentFixture(options = {}) {
 module.exports = {
   getContactRequestDocumentFixture,
 };
-
-module.exports.dataContract = dataContract;
diff --git a/lib/test/fixtures/getDpnsDocumentFixture.js b/lib/test/fixtures/getDpnsDocumentFixture.js
index 6293e900..81cc4ff3 100644
--- a/lib/test/fixtures/getDpnsDocumentFixture.js
+++ b/lib/test/fixtures/getDpnsDocumentFixture.js
@@ -5,12 +5,11 @@ const generateRandomIdentifier = require('../utils/generateRandomIdentifier');
 const createDPPMock = require('../mocks/createDPPMock');
 
 const ownerId = generateRandomIdentifier();
-const dataContract = getDpnsContractFixture();
 
 /**
  * @return {Document}
  */
-function getTopDocumentFixture(options = {}) {
+function getTopDocumentFixture(dataContract = getDpnsContractFixture(), options = {}) {
   const factory = new DocumentFactory(
     createDPPMock(),
     () => ({
@@ -41,7 +40,7 @@ function getTopDocumentFixture(options = {}) {
 /**
  * @return {Document}
  */
-function getParentDocumentFixture(options = {}) {
+function getParentDocumentFixture(dataContract = getDpnsContractFixture(), options = {}) {
   const factory = new DocumentFactory(
     createDPPMock(),
     () => ({
@@ -72,7 +71,7 @@ function getParentDocumentFixture(options = {}) {
 /**
  * @return {Document}
  */
-function getChildDocumentFixture(options = {}) {
+function getChildDocumentFixture(dataContract = getDpnsContractFixture(), options = {}) {
   const factory = new DocumentFactory(
     createDPPMock(),
     () => ({
@@ -107,5 +106,3 @@ module.exports = {
   getParentDocumentFixture,
   getChildDocumentFixture,
 };
-
-module.exports.dataContract = dataContract;
diff --git a/lib/test/fixtures/getFeatureFlagsDocumentsFixture.js b/lib/test/fixtures/getFeatureFlagsDocumentsFixture.js
index a9feeae6..c32db2d3 100644
--- a/lib/test/fixtures/getFeatureFlagsDocumentsFixture.js
+++ b/lib/test/fixtures/getFeatureFlagsDocumentsFixture.js
@@ -4,12 +4,11 @@ const generateRandomIdentifier = require('../utils/generateRandomIdentifier');
 const createDPPMock = require('../mocks/createDPPMock');
 
 const ownerId = generateRandomIdentifier();
-const dataContract = getFeatureFlagsContractFixture();
 
 /**
  * @return {Document}
  */
-function getFeatureFlagsDocumentsFixture() {
+function getFeatureFlagsDocumentsFixture(dataContract = getFeatureFlagsContractFixture()) {
   const factory = new DocumentFactory(
     createDPPMock(),
     () => ({
@@ -27,5 +26,3 @@ function getFeatureFlagsDocumentsFixture() {
 }
 
 module.exports = getFeatureFlagsDocumentsFixture;
-
-module.exports.dataContract = dataContract;
diff --git a/lib/test/fixtures/getIdentityCreateTransitionFixture.js b/lib/test/fixtures/getIdentityCreateTransitionFixture.js
index 8a56fb85..6f9e4706 100644
--- a/lib/test/fixtures/getIdentityCreateTransitionFixture.js
+++ b/lib/test/fixtures/getIdentityCreateTransitionFixture.js
@@ -23,7 +23,7 @@ module.exports = function getIdentityCreateTransitionFixture(oneTimePrivateKey =
       {
         id: 0,
         type: IdentityPublicKey.TYPES.ECDSA_SECP256K1,
-        data: Buffer.from('AuryIuMtRrl/VviQuyLD1l4nmxi9ogPzC9LT7tdpo0di', 'base64'),
+        data: oneTimePrivateKey.toPublicKey().toBuffer(),
       },
     ],
   };
diff --git a/lib/util/hash.js b/lib/util/hash.js
index 8603fa95..5fde270b 100644
--- a/lib/util/hash.js
+++ b/lib/util/hash.js
@@ -1,16 +1,25 @@
-const crypto = require('crypto');
+const blake3Promise = require('blake3/dist/node');
 
-function sha256(payload) {
-  return crypto.createHash('sha256')
-    .update(payload)
-    .digest();
+let blake3 = {};
+/**
+ * Init the blake 3 hasher
+ * @returns {Promise<void>}
+ */
+async function initBlake3() {
+  blake3 = await blake3Promise;
 }
+
 /**
- * Serialize and hash payload using double sha256
+ * Serialize and hash payload using blake 3
  *
  * @param {Buffer} buffer
  * @return {Buffer}
  */
-module.exports = function hash(buffer) {
-  return sha256(sha256(buffer));
+function hash(buffer) {
+  return blake3.hash(buffer);
+}
+
+module.exports = {
+  initBlake3,
+  hash,
 };
diff --git a/package-lock.json b/package-lock.json
index a19d81c4..2087c13c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,7 @@
         "ajv": "^8.6.0",
         "ajv-formats": "^2.1.1",
         "bignumber.js": "^9.0.1",
+        "blake3": "^2.1.4",
         "bs58": "^4.0.1",
         "cbor": "^8.0.0",
         "json-schema-traverse": "^1.0.0",
@@ -2593,6 +2594,12 @@
         "file-uri-to-path": "1.0.0"
       }
     },
+    "node_modules/blake3": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/blake3/-/blake3-2.1.4.tgz",
+      "integrity": "sha512-70hmx0lPd6zmtNwxPT4/1P0pqaEUlTJ0noUBvCXPLfMpN0o8PPaK3q7ZlpRIyhrqcXxeMAJSowNm/L9oi/x1XA==",
+      "hasInstallScript": true
+    },
     "node_modules/bloom-filter": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/bloom-filter/-/bloom-filter-0.2.0.tgz",
@@ -13449,6 +13456,11 @@
         "file-uri-to-path": "1.0.0"
       }
     },
+    "blake3": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/blake3/-/blake3-2.1.4.tgz",
+      "integrity": "sha512-70hmx0lPd6zmtNwxPT4/1P0pqaEUlTJ0noUBvCXPLfMpN0o8PPaK3q7ZlpRIyhrqcXxeMAJSowNm/L9oi/x1XA=="
+    },
     "bloom-filter": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/bloom-filter/-/bloom-filter-0.2.0.tgz",
diff --git a/package.json b/package.json
index 429280c8..fdcc5cd4 100644
--- a/package.json
+++ b/package.json
@@ -77,6 +77,7 @@
     "ajv": "^8.6.0",
     "ajv-formats": "^2.1.1",
     "bignumber.js": "^9.0.1",
+    "blake3": "^2.1.4",
     "bs58": "^4.0.1",
     "cbor": "^8.0.0",
     "json-schema-traverse": "^1.0.0",
diff --git a/test/unit/dataContract/DataContract.spec.js b/test/unit/dataContract/DataContract.spec.js
index d9c3c336..228c0372 100644
--- a/test/unit/dataContract/DataContract.spec.js
+++ b/test/unit/dataContract/DataContract.spec.js
@@ -30,7 +30,7 @@ describe('DataContract', () => {
     getBinaryPropertiesFromSchemaMock = this.sinonSandbox.stub();
 
     DataContract = rewiremock.proxy('../../../lib/dataContract/DataContract', {
-      '../../../lib/util/hash': hashMock,
+      '../../../lib/util/hash': { hash: hashMock },
       '../../../lib/util/serializer': serializerMock,
       '../../../lib/dataContract/getBinaryPropertiesFromSchema': getBinaryPropertiesFromSchemaMock,
     });
diff --git a/test/unit/dataContract/generateDataContractId.spec.js b/test/unit/dataContract/generateDataContractId.spec.js
index d2a77250..1a7306e8 100644
--- a/test/unit/dataContract/generateDataContractId.spec.js
+++ b/test/unit/dataContract/generateDataContractId.spec.js
@@ -11,7 +11,7 @@ describe('generateDataContractId', () => {
   });
 
   it('should generate bs58 id based on ', () => {
-    const id = bs58.decode('CnS7cz4z1qoPsNfEgpgyVnKdtH2u7bgzZXHLcCQt24US');
+    const id = bs58.decode('DJftzP4Db8pdN76p72SScmw27jcVjcxrqbT4mmZNMJcw');
     const generatedId = generateDataContractId(ownerId, entropy);
 
     expect(Buffer.compare(id, generatedId)).to.equal(0);
diff --git a/test/unit/dataContract/stateTransition/DataContractCreateTransition/DataContractCreateTransition.spec.js b/test/unit/dataContract/stateTransition/DataContractCreateTransition/DataContractCreateTransition.spec.js
index e1bbb513..e80161fa 100644
--- a/test/unit/dataContract/stateTransition/DataContractCreateTransition/DataContractCreateTransition.spec.js
+++ b/test/unit/dataContract/stateTransition/DataContractCreateTransition/DataContractCreateTransition.spec.js
@@ -18,7 +18,7 @@ describe('DataContractCreateTransition', () => {
     encodeMock = serializerMock.encode;
 
     const DataContractCreateTransition = rewiremock.proxy('../../../../../lib/dataContract/stateTransition/DataContractCreateTransition/DataContractCreateTransition', {
-      '../../../../../lib/util/hash': hashMock,
+      '../../../../../lib/util/hash': { hash: hashMock },
       '../../../../../lib/util/serializer': serializerMock,
     });
 
diff --git a/test/unit/dataTrigger/dpnsTriggers/createDomainDataTrigger.spec.js b/test/unit/dataTrigger/dpnsTriggers/createDomainDataTrigger.spec.js
index 04d3cbe9..c31d2f4f 100644
--- a/test/unit/dataTrigger/dpnsTriggers/createDomainDataTrigger.spec.js
+++ b/test/unit/dataTrigger/dpnsTriggers/createDomainDataTrigger.spec.js
@@ -9,7 +9,7 @@ const getDpnsContractFixture = require('../../../../lib/test/fixtures/getDpnsCon
 const getDocumentTransitionFixture = require('../../../../lib/test/fixtures/getDocumentTransitionsFixture');
 const createStateRepositoryMock = require('../../../../lib/test/mocks/createStateRepositoryMock');
 
-const hash = require('../../../../lib/util/hash');
+const { hash } = require('../../../../lib/util/hash');
 
 const DataTriggerConditionError = require('../../../../lib/errors/consensus/state/dataContract/dataTrigger/DataTriggerConditionError');
 const Identifier = require('../../../../lib/identifier/Identifier');
@@ -28,10 +28,10 @@ describe('createDomainDataTrigger', () => {
   beforeEach(function beforeEach() {
     dataContract = getDpnsContractFixture();
 
-    topDocument = getTopDocumentFixture();
-    parentDocument = getParentDocumentFixture();
-    childDocument = getChildDocumentFixture();
-    const preorderDocument = getPreorderDocumentFixture();
+    topDocument = getTopDocumentFixture(dataContract);
+    parentDocument = getParentDocumentFixture(dataContract);
+    childDocument = getChildDocumentFixture(dataContract);
+    const preorderDocument = getPreorderDocumentFixture(dataContract);
 
     [parentDocumentTransition] = getDocumentTransitionFixture({
       create: [parentDocument],
@@ -112,7 +112,10 @@ describe('createDomainDataTrigger', () => {
   });
 
   it('should fail with invalid normalizedLabel', async () => {
-    childDocument = getChildDocumentFixture({ normalizedLabel: childDocument.getData().label });
+    childDocument = getChildDocumentFixture(
+      dataContract,
+      { normalizedLabel: childDocument.getData().label },
+    );
     stateRepositoryMock.fetchTransaction
       .withArgs(
         childDocument.getData().records.dashUniqueIdentityId,
@@ -137,11 +140,14 @@ describe('createDomainDataTrigger', () => {
   });
 
   it('should fail with invalid parent domain', async () => {
-    childDocument = getChildDocumentFixture({
-      label: 'label',
-      normalizedLabel: 'label',
-      normalizedParentDomainName: 'parent.invalidname',
-    });
+    childDocument = getChildDocumentFixture(
+      dataContract,
+      {
+        label: 'label',
+        normalizedLabel: 'label',
+        normalizedParentDomainName: 'parent.invalidname',
+      },
+    );
 
     stateRepositoryMock.fetchTransaction
       .withArgs(
@@ -182,7 +188,7 @@ describe('createDomainDataTrigger', () => {
       Buffer.alloc(32, 5),
     );
 
-    childDocument = getChildDocumentFixture({
+    childDocument = getChildDocumentFixture(dataContract, {
       records: {
         dashUniqueIdentityId: dashUniqueIdentityId.toBuffer(),
       },
@@ -210,7 +216,7 @@ describe('createDomainDataTrigger', () => {
       Buffer.alloc(32, 2),
     );
 
-    childDocument = getChildDocumentFixture({
+    childDocument = getChildDocumentFixture(dataContract, {
       records: {
         dashAliasIdentityId: dashUniqueIdentityId.toBuffer(),
       },
@@ -234,7 +240,7 @@ describe('createDomainDataTrigger', () => {
   });
 
   it('should fail with preorder document was not found', async () => {
-    childDocument = getChildDocumentFixture({
+    childDocument = getChildDocumentFixture(dataContract, {
       preorderSalt: Buffer.alloc(256, '012fd'),
     });
 
@@ -256,7 +262,7 @@ describe('createDomainDataTrigger', () => {
   });
 
   it('should fail with invalid full domain name length', async () => {
-    childDocument = getChildDocumentFixture({
+    childDocument = getChildDocumentFixture(dataContract, {
       normalizedParentDomainName: 'a'.repeat(512),
     });
 
@@ -317,7 +323,9 @@ describe('createDomainDataTrigger', () => {
   });
 
   it('should fail with allowing subdomains for non top level domain', async () => {
-    childDocument = getChildDocumentFixture({ subdomainRules: { allowSubdomains: true } });
+    childDocument = getChildDocumentFixture(
+      dataContract, { subdomainRules: { allowSubdomains: true } },
+    );
 
     [childDocumentTransition] = getDocumentTransitionFixture({
       create: [childDocument],
diff --git a/test/unit/dataTrigger/featureFlagDataTriggers/createFeatureFlagDataTrigger.spec.js b/test/unit/dataTrigger/featureFlagDataTriggers/createFeatureFlagDataTrigger.spec.js
index 84550863..3db9462c 100644
--- a/test/unit/dataTrigger/featureFlagDataTriggers/createFeatureFlagDataTrigger.spec.js
+++ b/test/unit/dataTrigger/featureFlagDataTriggers/createFeatureFlagDataTrigger.spec.js
@@ -9,6 +9,7 @@ const createStateRepositoryMock = require('../../../../lib/test/mocks/createStat
 const DataTriggerExecutionResult = require('../../../../lib/dataTrigger/DataTriggerExecutionResult');
 const DataTriggerConditionError = require('../../../../lib/errors/consensus/state/dataContract/dataTrigger/DataTriggerConditionError');
 const Identifier = require('../../../../lib/identifier/Identifier');
+const getFeatureFlagsContractFixture = require('../../../../lib/test/fixtures/getFeatureFlagsContractFixture');
 
 describe('createFeatureFlagDataTrigger', () => {
   let contextMock;
@@ -24,7 +25,9 @@ describe('createFeatureFlagDataTrigger', () => {
       height: new Long(42),
     });
 
-    const [document] = getFeatureFlagsDocumentsFixture();
+    const dataContract = getFeatureFlagsContractFixture();
+
+    const [document] = getFeatureFlagsDocumentsFixture(dataContract);
 
     [documentTransition] = getDocumentTransitionsFixture({
       create: [document],
@@ -33,7 +36,7 @@ describe('createFeatureFlagDataTrigger', () => {
     contextMock = {
       getStateRepository: () => stateRepositoryMock,
       getOwnerId: this.sinonSandbox.stub(),
-      getDataContract: () => getFeatureFlagsDocumentsFixture.dataContract,
+      getDataContract: () => dataContract,
     };
     contextMock.getOwnerId.returns(topLevelIdentityId);
   });
diff --git a/test/unit/dataTrigger/getDataTriggersFactory.spec.js b/test/unit/dataTrigger/getDataTriggersFactory.spec.js
index ee26344f..257eafe2 100644
--- a/test/unit/dataTrigger/getDataTriggersFactory.spec.js
+++ b/test/unit/dataTrigger/getDataTriggersFactory.spec.js
@@ -10,6 +10,7 @@ const createDomainDataTrigger = require('../../../lib/dataTrigger/dpnsTriggers/c
 const rejectDataTrigger = require('../../../lib/dataTrigger/rejectDataTrigger');
 
 const generateRandomIdentifier = require('../../../lib/test/utils/generateRandomIdentifier');
+const getDpnsContractFixture = require('../../../lib/test/fixtures/getDpnsContractFixture');
 
 describe('getDataTriggers', () => {
   let getDataTriggers;
@@ -29,12 +30,13 @@ describe('getDataTriggers', () => {
   let topLevelIdentity;
 
   beforeEach(function beforeEach() {
-    createDocument = getDpnsDocumentFixture.getChildDocumentFixture();
-    updateDocument = getDpnsDocumentFixture.getChildDocumentFixture();
-    deleteDocument = getDpnsDocumentFixture.getChildDocumentFixture();
+    const dataContract = getDpnsContractFixture();
+    createDocument = getDpnsDocumentFixture.getChildDocumentFixture(dataContract);
+    updateDocument = getDpnsDocumentFixture.getChildDocumentFixture(dataContract);
+    deleteDocument = getDpnsDocumentFixture.getChildDocumentFixture(dataContract);
     deleteDocument.data = {};
 
-    dataContractId = getDpnsDocumentFixture.dataContract.getId();
+    dataContractId = dataContract.getId();
     topLevelIdentity = generateRandomIdentifier().toBuffer();
 
     createTrigger = new DataTrigger(
diff --git a/test/unit/document/Document.spec.js b/test/unit/document/Document.spec.js
index 26043f82..229c4640 100644
--- a/test/unit/document/Document.spec.js
+++ b/test/unit/document/Document.spec.js
@@ -38,7 +38,7 @@ describe('Document', () => {
       '../../../node_modules/lodash.get': lodashGetMock,
       '../../../node_modules/lodash.set': lodashSetMock,
       '../../../node_modules/lodash.clonedeep': lodashCloneDeepMock,
-      '../../../lib/util/hash': hashMock,
+      '../../../lib/util/hash': { hash: hashMock },
       '../../../lib/util/serializer': serializerMock,
     });
 
diff --git a/test/unit/document/DocumentFactory.spec.js b/test/unit/document/DocumentFactory.spec.js
index 571abee7..0d39f3e3 100644
--- a/test/unit/document/DocumentFactory.spec.js
+++ b/test/unit/document/DocumentFactory.spec.js
@@ -118,7 +118,7 @@ describe('DocumentFactory', () => {
 
       expect(newDocument.getRevision()).to.equal(DocumentCreateTransition.INITIAL_REVISION);
 
-      expect(newDocument.getId()).to.deep.equal(bs58.decode('B99gjrjq6R1FXwGUQnoP7VrmCDDT1PbKprUNzjVbxXfz'));
+      expect(newDocument.getId()).to.deep.equal(bs58.decode('E6ZqBauuv4LnFXhhnikuqQ9itmAbrCjQqzbL5jJgAK2h'));
 
       expect(newDocument.getCreatedAt().getTime()).to.be.equal(fakeTimeDate.getTime());
       expect(newDocument.getCreatedAt().getTime()).to.equal(newDocument.getUpdatedAt().getTime());
diff --git a/test/unit/document/stateTransition/DocumetsBatchTransition/DocumentsBatchTransition.spec.js b/test/unit/document/stateTransition/DocumetsBatchTransition/DocumentsBatchTransition.spec.js
index f950ddff..b823a578 100644
--- a/test/unit/document/stateTransition/DocumetsBatchTransition/DocumentsBatchTransition.spec.js
+++ b/test/unit/document/stateTransition/DocumetsBatchTransition/DocumentsBatchTransition.spec.js
@@ -22,7 +22,7 @@ describe('DocumentsBatchTransition', () => {
     encodeMock = serializerMock.encode;
 
     const DocumentFactory = rewiremock.proxy('../../../../../lib/document/DocumentFactory', {
-      '../../../../../lib/util/hash': hashMock,
+      '../../../../../lib/util/hash': { hash: hashMock },
       '../../../../../lib/util/serializer': serializerMock,
     });
 
diff --git a/test/unit/identity/Identity.spec.js b/test/unit/identity/Identity.spec.js
index a5525cb0..23bff934 100644
--- a/test/unit/identity/Identity.spec.js
+++ b/test/unit/identity/Identity.spec.js
@@ -21,7 +21,7 @@ describe('Identity', () => {
     Identity = rewiremock.proxy(
       '../../../lib/identity/Identity',
       {
-        '../../../lib/util/hash': hashMock,
+        '../../../lib/util/hash': { hash: hashMock },
         '../../../lib/util/serializer': {
           encode: encodeMock,
         },
diff --git a/test/unit/stateTransition/validation/validateStateTransitionKeySignatureFactory.spec.js b/test/unit/stateTransition/validation/validateStateTransitionKeySignatureFactory.spec.js
index f0f84f01..85621435 100644
--- a/test/unit/stateTransition/validation/validateStateTransitionKeySignatureFactory.spec.js
+++ b/test/unit/stateTransition/validation/validateStateTransitionKeySignatureFactory.spec.js
@@ -7,6 +7,8 @@ const { expectValidationError } = require('../../../../lib/test/expect/expectErr
 
 const ValidationResult = require('../../../../lib/validation/ValidationResult');
 
+const { hash } = require('../../../../lib/util/hash');
+
 describe('validateStateTransitionKeySignatureFactory', () => {
   let publicKeyHash;
   let stateTransition;
@@ -19,7 +21,7 @@ describe('validateStateTransitionKeySignatureFactory', () => {
     publicKeyHash = Buffer.alloc(20).fill(1);
 
     stateTransition = getIdentityCreateTransitionFixture();
-    stateTransitionHash = stateTransition.hash({ skipSignature: true });
+    stateTransitionHash = hash(stateTransition.toBuffer({ skipSignature: true }));
 
     verifyHashSignatureMock = this.sinonSandbox.stub();