Yuanyan Wu articles - 13 total
How to Fully Transfer ERC-20 Tokens Without Leaving Dust Using MetaMask and JavaScript
Learn how to fully transfer your ERC-20 token balance from one Ethereum wallet to another using...
Learn Solidity Through Code: Breaking Down Walkthrough.sol Step by Step
If you're starting your journey into Solidity and smart contract development, diving into actual code...
12-Word Seed Phrase Posted on YouTube ?? It Was a Trap.
On May 1, 2025, I came across a YouTube comment that looked innocent — maybe even a little...
The Ethereum Pectra Upgrade
The Ethereum Pectra upgrade combines two major protocol updates: the Prague execution layer and the...
Tracing April 2025 Bitcoin Movements and Monero Surge
Blockchain investigator ZachXBT reported that approximately 3,520 BTC (~$330M) were transferred from...
How to Fully Empty a Wallet via Chrome Console Without Leaving Dust
When transferring your full ETH balance from one wallet to another, most wallets leave a tiny amount...
Demystifying Reentrancy Attacks in Solidity: Vulnerabilities and Defenses
The vulnerable service // SPDX-License-Identifier: MIT pragma solidity...
Smart Contracts Deep Dive: Storage Packing, Payment Flows, and msg Object Explained
In my last article, "Inside a Smart Contract: Storage, Execution, and Blockchain Behavior", we...
Inside a Smart Contract: Storage, Execution, and Blockchain Behavior
Let us deploy this contract to Sepolia Testnet using Chrome console. // SPDX-License-Identifier:...
From Source to Blockchain: How Smart Contracts Go Live with Remix and MetaMask
Writing a smart contract is only the beginning. What happens between your source code and a live...
Onboard Ethereum: A Beginner’s Guide to MetaMask, Testnets, and Your First Wallet
If you're curious about Ethereum but not sure where to start, this guide is for you. We'll help you...
Understanding Walkthrough.sol Solidity Contract Explained in Detail
In this post, we'll treat Walkthrough.sol introduced in my previous post as a learning tool to...
Demystifying Solidity: A Step-by-Step Guide Using Walkthrough.sol
In this tutorial, we'll explore the structure and functionality of a simple Solidity smart contract...