diff --git a/protocol-specs/generators/multisignature_registration/index.js b/protocol-specs/generators/multisignature_registration/index.js
index 877a4ed46b9..2cc4f45a2c0 100644
--- a/protocol-specs/generators/multisignature_registration/index.js
+++ b/protocol-specs/generators/multisignature_registration/index.js
@@ -17,6 +17,7 @@
 const { signData } = require('@liskhq/lisk-cryptography');
 const { Codec } = require('@liskhq/lisk-codec');
 const BaseGenerator = require('../base_generator');
+const { baseTransactionSchema } = require('../../utils/schema');
 
 const codec = new Codec();
 
@@ -100,41 +101,6 @@ const outputBase64Account = account => ({
 	address: account.address.toString('base64'),
 });
 
-const baseSchema = {
-	$id: 'baseSchema',
-	type: 'object',
-	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
-	properties: {
-		type: {
-			dataType: 'uint32',
-			fieldNumber: 1,
-		},
-		nonce: {
-			dataType: 'uint64',
-			fieldNumber: 2,
-		},
-		fee: {
-			dataType: 'uint64',
-			fieldNumber: 3,
-		},
-		senderPublicKey: {
-			dataType: 'bytes',
-			fieldNumber: 4,
-		},
-		asset: {
-			dataType: 'bytes',
-			fieldNumber: 5,
-		},
-		signatures: {
-			type: 'array',
-			items: {
-				dataType: 'bytes',
-			},
-			fieldNumber: 6,
-		},
-	},
-};
-
 const multisigRegAsset = {
 	type: 'object',
 	properties: {
@@ -162,7 +128,7 @@ const getSignBytes = tx => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	return codec.encode(baseSchema, signingTx);
+	return codec.encode(baseTransactionSchema, signingTx);
 };
 
 const encode = tx => {
@@ -171,7 +137,7 @@ const encode = tx => {
 		...tx,
 		asset: assetBytes,
 	};
-	return codec.encode(baseSchema, txWithAssetBytes);
+	return codec.encode(baseTransactionSchema, txWithAssetBytes);
 };
 
 const sortKeysAscending = publicKeys =>
diff --git a/protocol-specs/generators/proof_of_misbehavior_transaction/index.js b/protocol-specs/generators/proof_of_misbehavior_transaction/index.js
index 6621e2e97f7..9cd08bf9928 100644
--- a/protocol-specs/generators/proof_of_misbehavior_transaction/index.js
+++ b/protocol-specs/generators/proof_of_misbehavior_transaction/index.js
@@ -21,6 +21,7 @@ const {
 	signDataWithPrivateKey,
 } = require('@liskhq/lisk-cryptography');
 const { Codec } = require('@liskhq/lisk-codec');
+const { baseTransactionSchema } = require('../../utils/schema');
 
 const BaseGenerator = require('../base_generator');
 
@@ -31,41 +32,6 @@ const networkIdentifier = Buffer.from(
 	'hex',
 );
 
-const baseSchema = {
-	$id: 'baseSchema',
-	type: 'object',
-	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
-	properties: {
-		type: {
-			dataType: 'uint32',
-			fieldNumber: 1,
-		},
-		nonce: {
-			dataType: 'uint64',
-			fieldNumber: 2,
-		},
-		fee: {
-			dataType: 'uint64',
-			fieldNumber: 3,
-		},
-		senderPublicKey: {
-			dataType: 'bytes',
-			fieldNumber: 4,
-		},
-		asset: {
-			dataType: 'bytes',
-			fieldNumber: 5,
-		},
-		signatures: {
-			type: 'array',
-			items: {
-				dataType: 'bytes',
-			},
-			fieldNumber: 6,
-		},
-	},
-};
-
 const pomAsset = {
 	$id: 'asset/pom',
 	type: 'object',
@@ -164,7 +130,7 @@ const getSignBytes = tx => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	return codec.encode(baseSchema, signingTx);
+	return codec.encode(baseTransactionSchema, signingTx);
 };
 
 const encode = tx => {
@@ -173,7 +139,7 @@ const encode = tx => {
 		...tx,
 		asset: assetBytes,
 	};
-	return codec.encode(baseSchema, txWithAssetBytes);
+	return codec.encode(baseTransactionSchema, txWithAssetBytes);
 };
 
 const createSignatureObject = (txBuffer, account) => ({
diff --git a/protocol-specs/generators/transaction_network_id_and_change_order/index.js b/protocol-specs/generators/transaction_network_id_and_change_order/index.js
index e0019dff893..bedabc77347 100644
--- a/protocol-specs/generators/transaction_network_id_and_change_order/index.js
+++ b/protocol-specs/generators/transaction_network_id_and_change_order/index.js
@@ -17,6 +17,7 @@
 const { signData } = require('@liskhq/lisk-cryptography');
 const { Codec } = require('@liskhq/lisk-codec');
 const BaseGenerator = require('../base_generator');
+const { baseTransactionSchema } = require('../../utils/schema');
 
 const codec = new Codec();
 
@@ -84,41 +85,6 @@ const networkIdentifier = Buffer.from(
 	'hex',
 );
 
-const baseSchema = {
-	$id: 'baseSchema',
-	type: 'object',
-	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
-	properties: {
-		type: {
-			dataType: 'uint32',
-			fieldNumber: 1,
-		},
-		nonce: {
-			dataType: 'uint64',
-			fieldNumber: 2,
-		},
-		fee: {
-			dataType: 'uint64',
-			fieldNumber: 3,
-		},
-		senderPublicKey: {
-			dataType: 'bytes',
-			fieldNumber: 4,
-		},
-		asset: {
-			dataType: 'bytes',
-			fieldNumber: 5,
-		},
-		signatures: {
-			type: 'array',
-			items: {
-				dataType: 'bytes',
-			},
-			fieldNumber: 6,
-		},
-	},
-};
-
 const balanceTransferAsset = {
 	type: 'object',
 	$id: 'balanceTransferAsset',
@@ -156,7 +122,7 @@ const generateValidTransferTransaction = () => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	const signingBytes = codec.encode(baseSchema, signingTx);
+	const signingBytes = codec.encode(baseTransactionSchema, signingTx);
 
 	const signature = Buffer.from(
 		signData(
@@ -166,7 +132,7 @@ const generateValidTransferTransaction = () => {
 		'hex',
 	);
 
-	const encodedTx = codec.encode(baseSchema, {
+	const encodedTx = codec.encode(baseTransactionSchema, {
 		...tx,
 		asset: assetBytes,
 		signatures: [signature],
@@ -207,7 +173,7 @@ const generateValidDelegateTransaction = () => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	const signingBytes = codec.encode(baseSchema, signingTx);
+	const signingBytes = codec.encode(baseTransactionSchema, signingTx);
 
 	const signature = Buffer.from(
 		signData(
@@ -217,7 +183,7 @@ const generateValidDelegateTransaction = () => {
 		'hex',
 	);
 
-	const encodedTx = codec.encode(baseSchema, {
+	const encodedTx = codec.encode(baseTransactionSchema, {
 		...tx,
 		asset: assetBytes,
 		signatures: [signature],
diff --git a/protocol-specs/generators/unlocking_transaction/index.js b/protocol-specs/generators/unlocking_transaction/index.js
index 004d821b8fe..e8068f021ea 100644
--- a/protocol-specs/generators/unlocking_transaction/index.js
+++ b/protocol-specs/generators/unlocking_transaction/index.js
@@ -17,6 +17,7 @@
 const { signData } = require('@liskhq/lisk-cryptography');
 const { Codec } = require('@liskhq/lisk-codec');
 const BaseGenerator = require('../base_generator');
+const { baseTransactionSchema } = require('../../utils/schema');
 
 const codec = new Codec();
 
@@ -177,41 +178,6 @@ const delegateAccounts = [
 	},
 ];
 
-const baseSchema = {
-	$id: 'baseSchema',
-	type: 'object',
-	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
-	properties: {
-		type: {
-			dataType: 'uint32',
-			fieldNumber: 1,
-		},
-		nonce: {
-			dataType: 'uint64',
-			fieldNumber: 2,
-		},
-		fee: {
-			dataType: 'uint64',
-			fieldNumber: 3,
-		},
-		senderPublicKey: {
-			dataType: 'bytes',
-			fieldNumber: 4,
-		},
-		asset: {
-			dataType: 'bytes',
-			fieldNumber: 5,
-		},
-		signatures: {
-			type: 'array',
-			items: {
-				dataType: 'bytes',
-			},
-			fieldNumber: 6,
-		},
-	},
-};
-
 const assetSchema = {
 	$id: 'asset/unlock',
 	type: 'object',
@@ -242,7 +208,7 @@ const getSignBytes = tx => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	return codec.encode(baseSchema, signingTx);
+	return codec.encode(baseTransactionSchema, signingTx);
 };
 
 const encode = tx => {
@@ -251,7 +217,7 @@ const encode = tx => {
 		...tx,
 		asset: assetBytes,
 	};
-	return codec.encode(baseSchema, txWithAssetBytes);
+	return codec.encode(baseTransactionSchema, txWithAssetBytes);
 };
 
 const generateValidUpvoteTransaction = () => {
diff --git a/protocol-specs/generators/vote_transaction/index.js b/protocol-specs/generators/vote_transaction/index.js
index 2d08fe2784c..2ea15c39a4b 100644
--- a/protocol-specs/generators/vote_transaction/index.js
+++ b/protocol-specs/generators/vote_transaction/index.js
@@ -17,6 +17,7 @@
 const { signData } = require('@liskhq/lisk-cryptography');
 const { Codec } = require('@liskhq/lisk-codec');
 const BaseGenerator = require('../base_generator');
+const { baseTransactionSchema } = require('../../utils/schema');
 
 const codec = new Codec();
 
@@ -217,41 +218,6 @@ const delegateAccounts = [
 	},
 ];
 
-const baseSchema = {
-	$id: 'baseSchema',
-	type: 'object',
-	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
-	properties: {
-		type: {
-			dataType: 'uint32',
-			fieldNumber: 1,
-		},
-		nonce: {
-			dataType: 'uint64',
-			fieldNumber: 2,
-		},
-		fee: {
-			dataType: 'uint64',
-			fieldNumber: 3,
-		},
-		senderPublicKey: {
-			dataType: 'bytes',
-			fieldNumber: 4,
-		},
-		asset: {
-			dataType: 'bytes',
-			fieldNumber: 5,
-		},
-		signatures: {
-			type: 'array',
-			items: {
-				dataType: 'bytes',
-			},
-			fieldNumber: 6,
-		},
-	},
-};
-
 const assetSchema = {
 	type: 'object',
 	properties: {
@@ -280,7 +246,7 @@ const getSignBytes = tx => {
 		asset: assetBytes,
 		signatures: [],
 	};
-	return codec.encode(baseSchema, signingTx);
+	return codec.encode(baseTransactionSchema, signingTx);
 };
 
 const encode = tx => {
@@ -289,7 +255,7 @@ const encode = tx => {
 		...tx,
 		asset: assetBytes,
 	};
-	return codec.encode(baseSchema, txWithAssetBytes);
+	return codec.encode(baseTransactionSchema, txWithAssetBytes);
 };
 
 const generateValidUpvoteTransaction = () => {
diff --git a/protocol-specs/utils/schema.js b/protocol-specs/utils/schema.js
new file mode 100644
index 00000000000..3affc7b7313
--- /dev/null
+++ b/protocol-specs/utils/schema.js
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2020 Lisk Foundation
+ *
+ * See the LICENSE file at the top-level directory of this distribution
+ * for licensing information.
+ *
+ * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation,
+ * no part of this software, including this file, may be copied, modified,
+ * propagated, or distributed except according to the terms contained in the
+ * LICENSE file.
+ *
+ * Removal or modification of this copyright notice is prohibited.
+ */
+
+const baseTransactionSchema = {
+	$id: 'baseTransactionSchema',
+	type: 'object',
+	required: ['type', 'nonce', 'fee', 'senderPublicKey', 'asset'],
+	properties: {
+		type: {
+			dataType: 'uint32',
+			fieldNumber: 1,
+		},
+		nonce: {
+			dataType: 'uint64',
+			fieldNumber: 2,
+		},
+		fee: {
+			dataType: 'uint64',
+			fieldNumber: 3,
+		},
+		senderPublicKey: {
+			dataType: 'bytes',
+			fieldNumber: 4,
+		},
+		asset: {
+			dataType: 'bytes',
+			fieldNumber: 5,
+		},
+		signatures: {
+			type: 'array',
+			items: {
+				dataType: 'bytes',
+			},
+			fieldNumber: 6,
+		},
+	},
+};
+
+module.exports = {
+	baseTransactionSchema,
+};