Smart contracts sur Ethereum : analyse critique, fonctionnement EVM et risques concrets illustrés

Your First Steps into Ethereum Smart Contracts (Beginner's Guide) Ever wondered how things work behind the scenes in crypto? Let's create a basic "smart contract" – a simple program that runs

In the digital wilderness of blockchain technology, a fascinating new life form has emerged - the Decentralized Autonomous Organization, or DAO for short. Think of it as the organizational equivalent of

简易计算UniswapV2的代币价格，这算是一个补充吧。以前虽也看过V2的合约，一般也用不着自己去求。这次是要集成$Slime的充值，需要计算一下价格，就找来资料试着计算下。 UniswapV2主要使用了 RouterV2 合约的两个方法，把它写成ABI，如下： const routerAbi = [ "function getAmountsOut(uint amountIn, address[]

Team Name: The Cyber Squad Team Leader Name: Vaibhav Babele Team Members Name:- 1.Ghanshyam prajapati 2.Vansh gupta 3.Sunny agrahari Problem Statement: Lack of Transparency: Complainants often face difficulty

I could not post yesterday but was online through the night battling with Solidity Smart Contract. I am still a newbie with Solidity thus, I have much to learn. Learning and building with solidity has

Es común que, en el mundo de la tecnología y especialmente en eventos y exposiciones de Web3, veamos una tendencia de los desarrolladores a priorizar y enorgullecerse de sus habilidades técnicas, como

Require function for access control in Solidity.

Simple smart contract with setName and getName functions.

Solidity Finance has announced a major change to the company that will take place in the upcoming months. Starting on August 28th the company will be operating under a new name, “SourceHat”, aiming to

A simple smart contract with Solidity

This program is practically an intensive full of activities in which each participant must make the most of

A few weeks ago I started learning web development in order to later jump into Solidity and create my first dApp. After following some HTML/CSS/JS tutorials, last week I started watching a Beginners Solidity

First of all you need to connect MetaMask to Binance Smart Chain, here's a article explaining step by step how to do it: After that you will have to download this file which is the solidity code that we're

Explore the benefits and drawbacks of Solidity and Rust for blockchain development, and why Rust is ideal for flashloans

Innovations in Ethereum smart contract exploits in 2022: Phantom Functions, Double-Entry Point Tokens, Fancy Native Tokens, NFT Flashloan Attacks, Read-Only Reentrancy, Cross-Protocol Reentrancy. #ethereum

Writing Your First Contract In Solidity Using Remix IDE

最近FTX爆了，据称是挪用了用户资金！不管是什么技术，最后还是回到了灵魂拷问：利和义，你取哪样？！吃瓜群众们又在那想验证资金的办法，怎么自证清白之类的。其实我想说，这只关乎人性，无关技术。如果真的关乎技术，那应该有N种办法。

把节约gas的几个方法测试了下，蛮有效的。以前看起来有些多余的操作其实是另有深意啊。比如常见的语句uint _arr = arr[i]，直接写arr[i]不是更直观么，为什么非要定义一个变量呢？！现在终于揭晓了谜团：原来是为了节约gas啊！ 案例集 中把这些方法都总结了，我也测试了下，还是很实用嘀！ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0;

智能合约中的数据获取一般都有点难度，不是速度慢，就是节点限速等。对于要求速度快且准确的应用来讲，如何快速地获取数据就是一个值得重视的问题。 对于我来讲，我也遇到了相似的问题：在NFT合约中如何快速读取全部或是多数的NFT数据。大家都知道，一个NFT合约都是几百上千，很多是一万个数量，如何一次性读取多个，也尝试过不少方法。当然，现在推荐的方法是multicall。