diff --git a/contracts/contracts/ExampleSHA256.sol b/contracts/contracts/ExampleSHA256.sol
index cbe0bd563b..b6cb67e1f1 100644
--- a/contracts/contracts/ExampleSHA256.sol
+++ b/contracts/contracts/ExampleSHA256.sol
@@ -1,9 +1,15 @@
 pragma solidity ^0.8.0;
 
+import "hardhat/console.sol";
+
 contract ExampleSHA256 {
     function hashSha256(uint256 numberToHash) public view returns (bytes32 h) {
         (bool ok, bytes memory out) = address(2).staticcall(abi.encode(numberToHash));
         require(ok, "precompile call failed");
+
+        console.logString("log out:");
+        console.logBytes(out);
+
         h = abi.decode(out, (bytes32));
     }
 }
diff --git a/contracts/contracts/ExampleSum3.sol b/contracts/contracts/ExampleSum3.sol
new file mode 100644
index 0000000000..c3d2edb021
--- /dev/null
+++ b/contracts/contracts/ExampleSum3.sol
@@ -0,0 +1,16 @@
+pragma solidity ^0.8.0;
+
+import "hardhat/console.sol";
+
+contract ExampleSum3 {
+    function sum3(bytes32 a) public view returns (bytes memory h) {
+        (bool ok, bytes memory out) = address(0x0b).staticcall(abi.encode(a));
+        require(ok, "precompile call failed");
+
+        console.logString("log out:");
+        console.logBytes(out);
+
+//        h = abi.decode(out, (bytes));
+        h = out;
+    }
+}
diff --git a/contracts/hardhat.config.ts b/contracts/hardhat.config.ts
index 89f1198fa9..e9781457b6 100644
--- a/contracts/hardhat.config.ts
+++ b/contracts/hardhat.config.ts
@@ -2,6 +2,7 @@ import { HardhatUserConfig } from "hardhat/config";
 import "@nomicfoundation/hardhat-toolbox";
 
 const config: HardhatUserConfig = {
+  // defaultNetwork: "geth",
   defaultNetwork: "geth",
   networks: {
     hardhat: {},
diff --git a/contracts/test/sum3.ts b/contracts/test/sum3.ts
new file mode 100644
index 0000000000..3c46302150
--- /dev/null
+++ b/contracts/test/sum3.ts
@@ -0,0 +1,20 @@
+import {
+    time,
+    loadFixture,
+} from "@nomicfoundation/hardhat-toolbox/network-helpers";
+import { anyValue } from "@nomicfoundation/hardhat-chai-matchers/withArgs";
+import { expect } from "chai";
+import { ethers } from "hardhat";
+
+describe("sum3", function() {
+    it("Should properly calculate sum of 3 numbers", async function () {
+        const ExampleSum3 = await ethers.getContractFactory("ExampleSum3")
+        const exampleSum3 = await ExampleSum3.deploy();
+
+        const array = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3]
+        const uint8Array = new Uint8Array(array);
+        console.log(await exampleSum3.sum3(uint8Array));
+
+        expect(await exampleSum3.sum3(uint8Array)).to.equal("0x0000000000000000000000000000000000000000000000000000000000000003");
+    })
+})
diff --git a/contracts/typechain-types/ExampleSum3.sol/ExampleSHA256.ts b/contracts/typechain-types/ExampleSum3.sol/ExampleSHA256.ts
new file mode 100644
index 0000000000..e514e739ff
--- /dev/null
+++ b/contracts/typechain-types/ExampleSum3.sol/ExampleSHA256.ts
@@ -0,0 +1,88 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import type {
+  BaseContract,
+  BigNumberish,
+  BytesLike,
+  FunctionFragment,
+  Result,
+  Interface,
+  ContractRunner,
+  ContractMethod,
+  Listener,
+} from "ethers";
+import type {
+  TypedContractEvent,
+  TypedDeferredTopicFilter,
+  TypedEventLog,
+  TypedListener,
+  TypedContractMethod,
+} from "../common";
+
+export interface ExampleSHA256Interface extends Interface {
+  getFunction(nameOrSignature: "hashSha256"): FunctionFragment;
+
+  encodeFunctionData(
+    functionFragment: "hashSha256",
+    values: [BigNumberish]
+  ): string;
+
+  decodeFunctionResult(functionFragment: "hashSha256", data: BytesLike): Result;
+}
+
+export interface ExampleSHA256 extends BaseContract {
+  connect(runner?: ContractRunner | null): ExampleSHA256;
+  waitForDeployment(): Promise<this>;
+
+  interface: ExampleSHA256Interface;
+
+  queryFilter<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+  queryFilter<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+
+  on<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  on<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  once<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  once<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  listeners<TCEvent extends TypedContractEvent>(
+    event: TCEvent
+  ): Promise<Array<TypedListener<TCEvent>>>;
+  listeners(eventName?: string): Promise<Array<Listener>>;
+  removeAllListeners<TCEvent extends TypedContractEvent>(
+    event?: TCEvent
+  ): Promise<this>;
+
+  hashSha256: TypedContractMethod<[a: BigNumberish], [bigint], "view">;
+
+  getFunction<T extends ContractMethod = ContractMethod>(
+    key: string | FunctionFragment
+  ): T;
+
+  getFunction(
+    nameOrSignature: "hashSha256"
+  ): TypedContractMethod<[a: BigNumberish], [bigint], "view">;
+
+  filters: {};
+}
diff --git a/contracts/typechain-types/ExampleSum3.sol/ExampleSum3.ts b/contracts/typechain-types/ExampleSum3.sol/ExampleSum3.ts
new file mode 100644
index 0000000000..524489434f
--- /dev/null
+++ b/contracts/typechain-types/ExampleSum3.sol/ExampleSum3.ts
@@ -0,0 +1,85 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import type {
+  BaseContract,
+  BigNumberish,
+  BytesLike,
+  FunctionFragment,
+  Result,
+  Interface,
+  ContractRunner,
+  ContractMethod,
+  Listener,
+} from "ethers";
+import type {
+  TypedContractEvent,
+  TypedDeferredTopicFilter,
+  TypedEventLog,
+  TypedListener,
+  TypedContractMethod,
+} from "../common";
+
+export interface ExampleSum3Interface extends Interface {
+  getFunction(nameOrSignature: "sum3"): FunctionFragment;
+
+  encodeFunctionData(functionFragment: "sum3", values: [BigNumberish]): string;
+
+  decodeFunctionResult(functionFragment: "sum3", data: BytesLike): Result;
+}
+
+export interface ExampleSum3 extends BaseContract {
+  connect(runner?: ContractRunner | null): ExampleSum3;
+  waitForDeployment(): Promise<this>;
+
+  interface: ExampleSum3Interface;
+
+  queryFilter<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+  queryFilter<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+
+  on<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  on<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  once<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  once<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  listeners<TCEvent extends TypedContractEvent>(
+    event: TCEvent
+  ): Promise<Array<TypedListener<TCEvent>>>;
+  listeners(eventName?: string): Promise<Array<Listener>>;
+  removeAllListeners<TCEvent extends TypedContractEvent>(
+    event?: TCEvent
+  ): Promise<this>;
+
+  sum3: TypedContractMethod<[a: BigNumberish], [bigint], "view">;
+
+  getFunction<T extends ContractMethod = ContractMethod>(
+    key: string | FunctionFragment
+  ): T;
+
+  getFunction(
+    nameOrSignature: "sum3"
+  ): TypedContractMethod<[a: BigNumberish], [bigint], "view">;
+
+  filters: {};
+}
diff --git a/contracts/typechain-types/ExampleSum3.sol/index.ts b/contracts/typechain-types/ExampleSum3.sol/index.ts
new file mode 100644
index 0000000000..52e516b680
--- /dev/null
+++ b/contracts/typechain-types/ExampleSum3.sol/index.ts
@@ -0,0 +1,5 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+export type { ExampleSHA256 } from "./ExampleSHA256";
+export type { ExampleSum3 } from "./ExampleSum3";
diff --git a/contracts/typechain-types/ExampleSum3.ts b/contracts/typechain-types/ExampleSum3.ts
new file mode 100644
index 0000000000..59ff17cb64
--- /dev/null
+++ b/contracts/typechain-types/ExampleSum3.ts
@@ -0,0 +1,84 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import type {
+  BaseContract,
+  BytesLike,
+  FunctionFragment,
+  Result,
+  Interface,
+  ContractRunner,
+  ContractMethod,
+  Listener,
+} from "ethers";
+import type {
+  TypedContractEvent,
+  TypedDeferredTopicFilter,
+  TypedEventLog,
+  TypedListener,
+  TypedContractMethod,
+} from "./common";
+
+export interface ExampleSum3Interface extends Interface {
+  getFunction(nameOrSignature: "sum3"): FunctionFragment;
+
+  encodeFunctionData(functionFragment: "sum3", values: [BytesLike]): string;
+
+  decodeFunctionResult(functionFragment: "sum3", data: BytesLike): Result;
+}
+
+export interface ExampleSum3 extends BaseContract {
+  connect(runner?: ContractRunner | null): ExampleSum3;
+  waitForDeployment(): Promise<this>;
+
+  interface: ExampleSum3Interface;
+
+  queryFilter<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+  queryFilter<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    fromBlockOrBlockhash?: string | number | undefined,
+    toBlock?: string | number | undefined
+  ): Promise<Array<TypedEventLog<TCEvent>>>;
+
+  on<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  on<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  once<TCEvent extends TypedContractEvent>(
+    event: TCEvent,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+  once<TCEvent extends TypedContractEvent>(
+    filter: TypedDeferredTopicFilter<TCEvent>,
+    listener: TypedListener<TCEvent>
+  ): Promise<this>;
+
+  listeners<TCEvent extends TypedContractEvent>(
+    event: TCEvent
+  ): Promise<Array<TypedListener<TCEvent>>>;
+  listeners(eventName?: string): Promise<Array<Listener>>;
+  removeAllListeners<TCEvent extends TypedContractEvent>(
+    event?: TCEvent
+  ): Promise<this>;
+
+  sum3: TypedContractMethod<[a: BytesLike], [string], "view">;
+
+  getFunction<T extends ContractMethod = ContractMethod>(
+    key: string | FunctionFragment
+  ): T;
+
+  getFunction(
+    nameOrSignature: "sum3"
+  ): TypedContractMethod<[a: BytesLike], [string], "view">;
+
+  filters: {};
+}
diff --git a/contracts/typechain-types/factories/ExampleSHA256__factory.ts b/contracts/typechain-types/factories/ExampleSHA256__factory.ts
index c2296a30ef..708365de6a 100644
--- a/contracts/typechain-types/factories/ExampleSHA256__factory.ts
+++ b/contracts/typechain-types/factories/ExampleSHA256__factory.ts
@@ -34,7 +34,7 @@ const _abi = [
 ] as const;
 
 const _bytecode =
-  "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";
+  "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";
 
 type ExampleSHA256ConstructorParams =
   | [signer?: Signer]
diff --git a/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSHA256__factory.ts b/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSHA256__factory.ts
new file mode 100644
index 0000000000..510dc6cb31
--- /dev/null
+++ b/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSHA256__factory.ts
@@ -0,0 +1,86 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import {
+  Contract,
+  ContractFactory,
+  ContractTransactionResponse,
+  Interface,
+} from "ethers";
+import type { Signer, ContractDeployTransaction, ContractRunner } from "ethers";
+import type { NonPayableOverrides } from "../../common";
+import type {
+  ExampleSHA256,
+  ExampleSHA256Interface,
+} from "../../ExampleSum3.sol/ExampleSHA256";
+
+const _abi = [
+  {
+    inputs: [
+      {
+        internalType: "uint256",
+        name: "a",
+        type: "uint256",
+      },
+    ],
+    name: "hashSha256",
+    outputs: [
+      {
+        internalType: "uint256",
+        name: "h",
+        type: "uint256",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+] as const;
+
+const _bytecode =
+  "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";
+
+type ExampleSHA256ConstructorParams =
+  | [signer?: Signer]
+  | ConstructorParameters<typeof ContractFactory>;
+
+const isSuperArgs = (
+  xs: ExampleSHA256ConstructorParams
+): xs is ConstructorParameters<typeof ContractFactory> => xs.length > 1;
+
+export class ExampleSHA256__factory extends ContractFactory {
+  constructor(...args: ExampleSHA256ConstructorParams) {
+    if (isSuperArgs(args)) {
+      super(...args);
+    } else {
+      super(_abi, _bytecode, args[0]);
+    }
+  }
+
+  override getDeployTransaction(
+    overrides?: NonPayableOverrides & { from?: string }
+  ): Promise<ContractDeployTransaction> {
+    return super.getDeployTransaction(overrides || {});
+  }
+  override deploy(overrides?: NonPayableOverrides & { from?: string }) {
+    return super.deploy(overrides || {}) as Promise<
+      ExampleSHA256 & {
+        deploymentTransaction(): ContractTransactionResponse;
+      }
+    >;
+  }
+  override connect(runner: ContractRunner | null): ExampleSHA256__factory {
+    return super.connect(runner) as ExampleSHA256__factory;
+  }
+
+  static readonly bytecode = _bytecode;
+  static readonly abi = _abi;
+  static createInterface(): ExampleSHA256Interface {
+    return new Interface(_abi) as ExampleSHA256Interface;
+  }
+  static connect(
+    address: string,
+    runner?: ContractRunner | null
+  ): ExampleSHA256 {
+    return new Contract(address, _abi, runner) as unknown as ExampleSHA256;
+  }
+}
diff --git a/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSum3__factory.ts b/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSum3__factory.ts
new file mode 100644
index 0000000000..34f85e2421
--- /dev/null
+++ b/contracts/typechain-types/factories/ExampleSum3.sol/ExampleSum3__factory.ts
@@ -0,0 +1,83 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import {
+  Contract,
+  ContractFactory,
+  ContractTransactionResponse,
+  Interface,
+} from "ethers";
+import type { Signer, ContractDeployTransaction, ContractRunner } from "ethers";
+import type { NonPayableOverrides } from "../../common";
+import type {
+  ExampleSum3,
+  ExampleSum3Interface,
+} from "../../ExampleSum3.sol/ExampleSum3";
+
+const _abi = [
+  {
+    inputs: [
+      {
+        internalType: "uint256",
+        name: "a",
+        type: "uint256",
+      },
+    ],
+    name: "sum3",
+    outputs: [
+      {
+        internalType: "uint256",
+        name: "h",
+        type: "uint256",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+] as const;
+
+const _bytecode =
+  "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";
+
+type ExampleSum3ConstructorParams =
+  | [signer?: Signer]
+  | ConstructorParameters<typeof ContractFactory>;
+
+const isSuperArgs = (
+  xs: ExampleSum3ConstructorParams
+): xs is ConstructorParameters<typeof ContractFactory> => xs.length > 1;
+
+export class ExampleSum3__factory extends ContractFactory {
+  constructor(...args: ExampleSum3ConstructorParams) {
+    if (isSuperArgs(args)) {
+      super(...args);
+    } else {
+      super(_abi, _bytecode, args[0]);
+    }
+  }
+
+  override getDeployTransaction(
+    overrides?: NonPayableOverrides & { from?: string }
+  ): Promise<ContractDeployTransaction> {
+    return super.getDeployTransaction(overrides || {});
+  }
+  override deploy(overrides?: NonPayableOverrides & { from?: string }) {
+    return super.deploy(overrides || {}) as Promise<
+      ExampleSum3 & {
+        deploymentTransaction(): ContractTransactionResponse;
+      }
+    >;
+  }
+  override connect(runner: ContractRunner | null): ExampleSum3__factory {
+    return super.connect(runner) as ExampleSum3__factory;
+  }
+
+  static readonly bytecode = _bytecode;
+  static readonly abi = _abi;
+  static createInterface(): ExampleSum3Interface {
+    return new Interface(_abi) as ExampleSum3Interface;
+  }
+  static connect(address: string, runner?: ContractRunner | null): ExampleSum3 {
+    return new Contract(address, _abi, runner) as unknown as ExampleSum3;
+  }
+}
diff --git a/contracts/typechain-types/factories/ExampleSum3.sol/index.ts b/contracts/typechain-types/factories/ExampleSum3.sol/index.ts
new file mode 100644
index 0000000000..6d2bbb5792
--- /dev/null
+++ b/contracts/typechain-types/factories/ExampleSum3.sol/index.ts
@@ -0,0 +1,5 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+export { ExampleSHA256__factory } from "./ExampleSHA256__factory";
+export { ExampleSum3__factory } from "./ExampleSum3__factory";
diff --git a/contracts/typechain-types/factories/ExampleSum3__factory.ts b/contracts/typechain-types/factories/ExampleSum3__factory.ts
new file mode 100644
index 0000000000..d5088b0718
--- /dev/null
+++ b/contracts/typechain-types/factories/ExampleSum3__factory.ts
@@ -0,0 +1,80 @@
+/* Autogenerated file. Do not edit manually. */
+/* tslint:disable */
+/* eslint-disable */
+import {
+  Contract,
+  ContractFactory,
+  ContractTransactionResponse,
+  Interface,
+} from "ethers";
+import type { Signer, ContractDeployTransaction, ContractRunner } from "ethers";
+import type { NonPayableOverrides } from "../common";
+import type { ExampleSum3, ExampleSum3Interface } from "../ExampleSum3";
+
+const _abi = [
+  {
+    inputs: [
+      {
+        internalType: "bytes32",
+        name: "a",
+        type: "bytes32",
+      },
+    ],
+    name: "sum3",
+    outputs: [
+      {
+        internalType: "bytes",
+        name: "h",
+        type: "bytes",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+] as const;
+
+const _bytecode =
+  "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";
+
+type ExampleSum3ConstructorParams =
+  | [signer?: Signer]
+  | ConstructorParameters<typeof ContractFactory>;
+
+const isSuperArgs = (
+  xs: ExampleSum3ConstructorParams
+): xs is ConstructorParameters<typeof ContractFactory> => xs.length > 1;
+
+export class ExampleSum3__factory extends ContractFactory {
+  constructor(...args: ExampleSum3ConstructorParams) {
+    if (isSuperArgs(args)) {
+      super(...args);
+    } else {
+      super(_abi, _bytecode, args[0]);
+    }
+  }
+
+  override getDeployTransaction(
+    overrides?: NonPayableOverrides & { from?: string }
+  ): Promise<ContractDeployTransaction> {
+    return super.getDeployTransaction(overrides || {});
+  }
+  override deploy(overrides?: NonPayableOverrides & { from?: string }) {
+    return super.deploy(overrides || {}) as Promise<
+      ExampleSum3 & {
+        deploymentTransaction(): ContractTransactionResponse;
+      }
+    >;
+  }
+  override connect(runner: ContractRunner | null): ExampleSum3__factory {
+    return super.connect(runner) as ExampleSum3__factory;
+  }
+
+  static readonly bytecode = _bytecode;
+  static readonly abi = _abi;
+  static createInterface(): ExampleSum3Interface {
+    return new Interface(_abi) as ExampleSum3Interface;
+  }
+  static connect(address: string, runner?: ContractRunner | null): ExampleSum3 {
+    return new Contract(address, _abi, runner) as unknown as ExampleSum3;
+  }
+}
diff --git a/contracts/typechain-types/factories/index.ts b/contracts/typechain-types/factories/index.ts
index 91cab03f4d..554e11dad5 100644
--- a/contracts/typechain-types/factories/index.ts
+++ b/contracts/typechain-types/factories/index.ts
@@ -2,4 +2,5 @@
 /* tslint:disable */
 /* eslint-disable */
 export { ExampleSHA256__factory } from "./ExampleSHA256__factory";
+export { ExampleSum3__factory } from "./ExampleSum3__factory";
 export { Lock__factory } from "./Lock__factory";
diff --git a/contracts/typechain-types/hardhat.d.ts b/contracts/typechain-types/hardhat.d.ts
index 8adea786db..1d559791cc 100644
--- a/contracts/typechain-types/hardhat.d.ts
+++ b/contracts/typechain-types/hardhat.d.ts
@@ -17,6 +17,10 @@ declare module "hardhat/types/runtime" {
       name: "ExampleSHA256",
       signerOrOptions?: ethers.Signer | FactoryOptions
     ): Promise<Contracts.ExampleSHA256__factory>;
+    getContractFactory(
+      name: "ExampleSum3",
+      signerOrOptions?: ethers.Signer | FactoryOptions
+    ): Promise<Contracts.ExampleSum3__factory>;
     getContractFactory(
       name: "Lock",
       signerOrOptions?: ethers.Signer | FactoryOptions
@@ -27,6 +31,11 @@ declare module "hardhat/types/runtime" {
       address: string | ethers.Addressable,
       signer?: ethers.Signer
     ): Promise<Contracts.ExampleSHA256>;
+    getContractAt(
+      name: "ExampleSum3",
+      address: string | ethers.Addressable,
+      signer?: ethers.Signer
+    ): Promise<Contracts.ExampleSum3>;
     getContractAt(
       name: "Lock",
       address: string | ethers.Addressable,
@@ -37,6 +46,10 @@ declare module "hardhat/types/runtime" {
       name: "ExampleSHA256",
       signerOrOptions?: ethers.Signer | DeployContractOptions
     ): Promise<Contracts.ExampleSHA256>;
+    deployContract(
+      name: "ExampleSum3",
+      signerOrOptions?: ethers.Signer | DeployContractOptions
+    ): Promise<Contracts.ExampleSum3>;
     deployContract(
       name: "Lock",
       signerOrOptions?: ethers.Signer | DeployContractOptions
@@ -47,6 +60,11 @@ declare module "hardhat/types/runtime" {
       args: any[],
       signerOrOptions?: ethers.Signer | DeployContractOptions
     ): Promise<Contracts.ExampleSHA256>;
+    deployContract(
+      name: "ExampleSum3",
+      args: any[],
+      signerOrOptions?: ethers.Signer | DeployContractOptions
+    ): Promise<Contracts.ExampleSum3>;
     deployContract(
       name: "Lock",
       args: any[],
diff --git a/contracts/typechain-types/index.ts b/contracts/typechain-types/index.ts
index 64dc12c06f..da470df03b 100644
--- a/contracts/typechain-types/index.ts
+++ b/contracts/typechain-types/index.ts
@@ -2,7 +2,9 @@
 /* tslint:disable */
 /* eslint-disable */
 export type { ExampleSHA256 } from "./ExampleSHA256";
+export type { ExampleSum3 } from "./ExampleSum3";
 export type { Lock } from "./Lock";
 export * as factories from "./factories";
 export { ExampleSHA256__factory } from "./factories/ExampleSHA256__factory";
+export { ExampleSum3__factory } from "./factories/ExampleSum3__factory";
 export { Lock__factory } from "./factories/Lock__factory";
diff --git a/core/vm/contracts.go b/core/vm/contracts.go
index da3308d8bc..31b5cb0103 100644
--- a/core/vm/contracts.go
+++ b/core/vm/contracts.go
@@ -21,6 +21,7 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"github.com/ethereum/go-ethereum/log"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -45,51 +46,55 @@ type PrecompiledContract interface {
 // PrecompiledContractsHomestead contains the default set of pre-compiled Ethereum
 // contracts used in the Frontier and Homestead releases.
 var PrecompiledContractsHomestead = map[common.Address]PrecompiledContract{
-	common.BytesToAddress([]byte{1}): &ecrecover{},
-	common.BytesToAddress([]byte{2}): &sha256hash{},
-	common.BytesToAddress([]byte{3}): &ripemd160hash{},
-	common.BytesToAddress([]byte{4}): &dataCopy{},
+	common.BytesToAddress([]byte{1}):    &ecrecover{},
+	common.BytesToAddress([]byte{2}):    &sha256hash{},
+	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
+	common.BytesToAddress([]byte{4}):    &dataCopy{},
+	common.BytesToAddress([]byte{0x0b}): &sum3{},
 }
 
 // PrecompiledContractsByzantium contains the default set of pre-compiled Ethereum
 // contracts used in the Byzantium release.
 var PrecompiledContractsByzantium = map[common.Address]PrecompiledContract{
-	common.BytesToAddress([]byte{1}): &ecrecover{},
-	common.BytesToAddress([]byte{2}): &sha256hash{},
-	common.BytesToAddress([]byte{3}): &ripemd160hash{},
-	common.BytesToAddress([]byte{4}): &dataCopy{},
-	common.BytesToAddress([]byte{5}): &bigModExp{eip2565: false},
-	common.BytesToAddress([]byte{6}): &bn256AddByzantium{},
-	common.BytesToAddress([]byte{7}): &bn256ScalarMulByzantium{},
-	common.BytesToAddress([]byte{8}): &bn256PairingByzantium{},
+	common.BytesToAddress([]byte{1}):    &ecrecover{},
+	common.BytesToAddress([]byte{2}):    &sha256hash{},
+	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
+	common.BytesToAddress([]byte{4}):    &dataCopy{},
+	common.BytesToAddress([]byte{5}):    &bigModExp{eip2565: false},
+	common.BytesToAddress([]byte{6}):    &bn256AddByzantium{},
+	common.BytesToAddress([]byte{7}):    &bn256ScalarMulByzantium{},
+	common.BytesToAddress([]byte{8}):    &bn256PairingByzantium{},
+	common.BytesToAddress([]byte{0x0b}): &sum3{},
 }
 
 // PrecompiledContractsIstanbul contains the default set of pre-compiled Ethereum
 // contracts used in the Istanbul release.
 var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{
-	common.BytesToAddress([]byte{1}): &ecrecover{},
-	common.BytesToAddress([]byte{2}): &sha256hash{},
-	common.BytesToAddress([]byte{3}): &ripemd160hash{},
-	common.BytesToAddress([]byte{4}): &dataCopy{},
-	common.BytesToAddress([]byte{5}): &bigModExp{eip2565: false},
-	common.BytesToAddress([]byte{6}): &bn256AddIstanbul{},
-	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
-	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
-	common.BytesToAddress([]byte{9}): &blake2F{},
+	common.BytesToAddress([]byte{1}):    &ecrecover{},
+	common.BytesToAddress([]byte{2}):    &sha256hash{},
+	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
+	common.BytesToAddress([]byte{4}):    &dataCopy{},
+	common.BytesToAddress([]byte{5}):    &bigModExp{eip2565: false},
+	common.BytesToAddress([]byte{6}):    &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}):    &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}):    &blake2F{},
+	common.BytesToAddress([]byte{0x0b}): &sum3{},
 }
 
 // PrecompiledContractsBerlin contains the default set of pre-compiled Ethereum
 // contracts used in the Berlin release.
 var PrecompiledContractsBerlin = map[common.Address]PrecompiledContract{
-	common.BytesToAddress([]byte{1}): &ecrecover{},
-	common.BytesToAddress([]byte{2}): &sha256hash{},
-	common.BytesToAddress([]byte{3}): &ripemd160hash{},
-	common.BytesToAddress([]byte{4}): &dataCopy{},
-	common.BytesToAddress([]byte{5}): &bigModExp{eip2565: true},
-	common.BytesToAddress([]byte{6}): &bn256AddIstanbul{},
-	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
-	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
-	common.BytesToAddress([]byte{9}): &blake2F{},
+	common.BytesToAddress([]byte{1}):    &ecrecover{},
+	common.BytesToAddress([]byte{2}):    &sha256hash{},
+	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
+	common.BytesToAddress([]byte{4}):    &dataCopy{},
+	common.BytesToAddress([]byte{5}):    &bigModExp{eip2565: true},
+	common.BytesToAddress([]byte{6}):    &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}):    &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}):    &blake2F{},
+	common.BytesToAddress([]byte{0x0b}): &sum3{},
 }
 
 // PrecompiledContractsCancun contains the default set of pre-compiled Ethereum
@@ -105,7 +110,7 @@ var PrecompiledContractsCancun = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
 	common.BytesToAddress([]byte{9}):    &blake2F{},
 	common.BytesToAddress([]byte{0x0a}): &kzgPointEvaluation{},
-	//common.BytesToAddress([]byte{0x0b}): &sum3{},
+	common.BytesToAddress([]byte{0x0b}): &sum3{},
 }
 
 // PrecompiledContractsBLS contains the set of pre-compiled Ethereum
@@ -242,7 +247,19 @@ func (c *sum3) RequiredGas(input []byte) uint64 {
 	return 1
 }
 func (c *sum3) Run(input []byte) ([]byte, error) {
-	return input, nil
+	log.Info(fmt.Sprintf("input: %v\n", input))
+
+	//num := big.Int{}
+	//num.SetBytes(input)
+	//
+	//big.
+
+	//output := []byte{40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40}
+
+	output := make([]byte, 32)
+	copy(output, input)
+
+	return output, nil
 }
 
 // RIPEMD160 implemented as a native contract.