diff --git a/src/rpc/response.ts b/src/rpc/response.ts
index a5278e21f..c9b4a1ab2 100644
--- a/src/rpc/response.ts
+++ b/src/rpc/response.ts
@@ -320,6 +320,13 @@ export class InfoGetDeployResultV1Compatible {
   blockHeight?: number;
 
   public rawJSON: any;
+
+  public static fromJSON(
+    json: any
+  ): InfoGetDeployResultV1Compatible | undefined {
+    const serializer = new TypedJSON(InfoGetDeployResultV1Compatible);
+    return serializer.parse(json);
+  }
 }
 
 @jsonObject
diff --git a/src/types/Deploy.ts b/src/types/Deploy.ts
index 2129e5e52..dc7552f65 100644
--- a/src/types/Deploy.ts
+++ b/src/types/Deploy.ts
@@ -19,7 +19,12 @@ import { ClassicMode, PricingMode } from './PricingMode';
 import { TransactionTarget } from './TransactionTarget';
 import { TransactionScheduling } from './TransactionScheduling';
 import { ExecutableDeployItem } from './ExecutableDeployItem';
-import { byteHash, toBytesU32 } from './ByteConverters';
+import {
+  byteHash,
+  toBytesString,
+  toBytesU32,
+  toBytesU64
+} from './ByteConverters';
 import { Conversions } from './Conversions';
 
 /**
@@ -143,52 +148,18 @@ export class DeployHeader {
    * @returns A `Uint8Array` representing the deploy header in byte format.
    */
   public toBytes(): Uint8Array {
-    const accountBytes = this.account?.bytes() ?? new Uint8Array();
-    const timestampBytes = new Uint8Array(
-      new BigUint64Array([BigInt(this.timestamp.toMilliseconds())]).buffer
-    );
-    const ttlBytes = new Uint8Array(
-      new BigUint64Array([BigInt(this.ttl.toMilliseconds())]).buffer
-    );
-    const gasPriceBytes = new Uint8Array(
-      new BigUint64Array([BigInt(this.gasPrice)]).buffer
-    );
-    const bodyHashBytes = this.bodyHash?.toBytes() ?? new Uint8Array();
-    const chainNameBytes = new TextEncoder().encode(this.chainName);
-
-    const totalLength =
-      accountBytes.length +
-      timestampBytes.length +
-      ttlBytes.length +
-      gasPriceBytes.length +
-      bodyHashBytes.length +
-      chainNameBytes.length;
-    const result = new Uint8Array(totalLength);
-
-    result.set(accountBytes, 0);
-    result.set(timestampBytes, accountBytes.length);
-    result.set(ttlBytes, accountBytes.length + timestampBytes.length);
-    result.set(
-      gasPriceBytes,
-      accountBytes.length + timestampBytes.length + ttlBytes.length
-    );
-    result.set(
-      bodyHashBytes,
-      accountBytes.length +
-        timestampBytes.length +
-        ttlBytes.length +
-        gasPriceBytes.length
-    );
-    result.set(
-      chainNameBytes,
-      accountBytes.length +
-        timestampBytes.length +
-        ttlBytes.length +
-        gasPriceBytes.length +
-        bodyHashBytes.length
-    );
+    const dependenciesBytes = this.dependencies.map(e => e.toBytes());
+    dependenciesBytes.splice(0, 0, toBytesU32(this.dependencies?.length));
 
-    return result;
+    return concat([
+      this.account!.bytes(),
+      toBytesU64(Date.parse(this.timestamp.toJSON())),
+      toBytesU64(this.ttl.duration),
+      toBytesU64(this.gasPrice),
+      this.bodyHash!.toBytes(),
+      concat(dependenciesBytes),
+      toBytesString(this.chainName)
+    ]);
   }
 
   /**
diff --git a/src/types/Transaction.ts b/src/types/Transaction.ts
index a6bbaeb63..8822a25b6 100644
--- a/src/types/Transaction.ts
+++ b/src/types/Transaction.ts
@@ -386,7 +386,7 @@ export class TransactionV1 {
    * Validates the transaction by checking the body hash and the approval signatures.
    * @throws {TransactionError} Throws errors if validation fails.
    */
-  public validate(): void {
+  public validate(): boolean {
     const bodyBytes = this.body.toBytes();
 
     if (!arrayEquals(byteHash(bodyBytes), this.header.bodyHash.toBytes()))
@@ -407,6 +407,8 @@ export class TransactionV1 {
         throw ErrInvalidApprovalSignature;
       }
     }
+
+    return true;
   }
 
   /**
diff --git a/src/types/clvalue/Bool.test.ts b/src/types/clvalue/Bool.test.ts
index 88b2e6118..afe9c65c8 100644
--- a/src/types/clvalue/Bool.test.ts
+++ b/src/types/clvalue/Bool.test.ts
@@ -13,10 +13,10 @@ describe('CLBool', () => {
   });
 
   it('toBytes() / fromBytes() do proper bytes serialization', () => {
-    const myBool = CLValueBool.fromBoolean(false);
-    const myBool2 = CLValueBool.fromBoolean(true);
-    const myBoolBytes = CLValueParser.toBytesWithType(myBool);
-    const myBool2Bytes = CLValueParser.toBytesWithType(myBool2);
+    const myBool = new CLValueBool(false);
+    const myBool2 = new CLValueBool(true);
+    const myBoolBytes = myBool.bytes();
+    const myBool2Bytes = myBool2.bytes();
 
     const fromBytes1 = CLValueParser.fromBytesByType(myBoolBytes, CLTypeBool)
       .result;
@@ -26,8 +26,8 @@ describe('CLBool', () => {
     expect(myBoolBytes).to.be.deep.eq(Uint8Array.from([0]));
     expect(myBool2Bytes).to.be.deep.eq(Uint8Array.from([1]));
 
-    expect(fromBytes1).to.be.deep.eq(myBool);
-    expect(fromBytes2).to.be.deep.eq(myBool2);
+    expect(fromBytes1.bool).to.be.deep.eq(myBool);
+    expect(fromBytes2.bool).to.be.deep.eq(myBool2);
   });
 
   it('toJSON() / fromJSON() do proper bytes serialization', () => {
diff --git a/src/types/clvalue/ByteArray.test.ts b/src/types/clvalue/ByteArray.test.ts
index 6dcfd4974..15cb2059e 100644
--- a/src/types/clvalue/ByteArray.test.ts
+++ b/src/types/clvalue/ByteArray.test.ts
@@ -14,7 +14,7 @@ describe('CLByteArray', () => {
   it('Should be able to return proper byte array by calling toBytes() / fromBytes()', () => {
     const expectedBytes = Uint8Array.from(Array(32).fill(42));
     const hash = CLValueByteArray.newCLByteArray(expectedBytes);
-    const bytes = CLValueParser.toBytesWithType(hash);
+    const bytes = hash.bytes();
 
     expect(bytes).to.deep.eq(expectedBytes);
     expect(
diff --git a/src/types/clvalue/Parser.ts b/src/types/clvalue/Parser.ts
index 22b98f8f4..59785aa46 100644
--- a/src/types/clvalue/Parser.ts
+++ b/src/types/clvalue/Parser.ts
@@ -1,3 +1,5 @@
+import { concat } from '@ethersproject/bytes';
+
 import { CLValue, IResultWithBytes } from './CLValue';
 import { Key, URef } from '../key';
 import { PublicKey } from '../keypair';
@@ -35,6 +37,7 @@ import { CLValueTuple1 } from './Tuple1';
 import { CLValueTuple2 } from './Tuple2';
 import { CLValueTuple3 } from './Tuple3';
 import { Conversions } from '../Conversions';
+import { toBytesArrayU8 } from '../ByteConverters';
 
 /**
  * Error thrown when an unsupported CLType is encountered.
@@ -85,7 +88,9 @@ export class CLValueParser {
    * @returns A Uint8Array containing the serialized CLValue with type information.
    */
   static toBytesWithType(value: CLValue): Uint8Array {
-    return value.bytes();
+    const clTypeBytes = value.getType().toBytes();
+    const bytes = value.bytes();
+    return concat([toBytesArrayU8(bytes), clTypeBytes]);
   }
 
   /**
diff --git a/src/types/clvalue/String.test.ts b/src/types/clvalue/String.test.ts
index 0fa9896a0..c280146f5 100644
--- a/src/types/clvalue/String.test.ts
+++ b/src/types/clvalue/String.test.ts
@@ -10,7 +10,7 @@ describe('CLString', () => {
 
   it('toBytes() / fromBytes()', () => {
     const str = CLValueString.newCLString('ABC');
-    const bytes = CLValueParser.toBytesWithType(str);
+    const bytes = str.bytes();
     const parsed = CLValueParser.fromBytesByType(bytes, str.type);
     expect(parsed.result).to.be.deep.eq(str);
   });
diff --git a/src/types/key/Uref.test.ts b/src/types/key/Uref.test.ts
index a518e86d3..6afc577ad 100644
--- a/src/types/key/Uref.test.ts
+++ b/src/types/key/Uref.test.ts
@@ -39,7 +39,7 @@ describe('CLUref', () => {
   it('toBytes() / fromBytes() proper values', () => {
     const expectedBytes = Uint8Array.from([...Array(32).fill(42), 7]);
     const urefValue = CLValue.newCLUref(RWExampleURef);
-    const toBytes = CLValueParser.toBytesWithType(urefValue);
+    const toBytes = urefValue.bytes();
     const fromBytes = CLValueParser.fromBytesByType(
       expectedBytes,
       urefValue.type