Lucas Pereira lucaspere

😶‍🌫️

Always Thinking

I'm a developer full-stack based on Belo Horizonte, Brazil. I started writing code at the age of 14 and never stopped - and I never will.

lucaspere / ethTxLegacy.ts

Created May 3, 2025 15:08

Demonstration of manually signing a legacy Ethereum transaction in TypeScript using RLP, Keccak256 and secp256k1, comparing against the viem library.

	import { secp256k1 } from "@noble/curves/secp256k1";
	import keccak256 from "keccak256";
	import { assert } from "node:console";
	import RLP, { Input } from "rlp";
	import * as viem from "viem";
	import { privateKeyToAccount } from "viem/accounts";

	const messageToSign = {
	nonce: 0,
	gasPrice: viem.parseGwei("20"),

lucaspere / AdvacedRegistry.sol

Created April 19, 2025 20:43

Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.8.26+commit.8a97fa7a.js&optimize=false&runs=200&gist=

	// SPDX-License-Identifier: GPL-3.0

	pragma solidity >=0.8.2 <0.9.0;
	import "contracts/BaseRegistry.sol";

	error MaximumPontuationExceeded();
	error InvalidWithdrawalValue();
	error InsufficientBalance(uint balance, uint value);
	error FailTransferEther();

lucaspere / main.go

Last active March 23, 2023 11:43

Destructuring of Dynamic Structure Fields