★ Top guideAnalysis
Reentrancy Attacks Told Through Real Exploits
The DAO, Fei, Cream — the pattern that ate $50M and how the fix works. The most-cited smart-contract vulnerability.
Advanced8 min read
★ Library116 guidesPlain English
Crypto Guides & Analytics
Beginner-to-advanced crypto guides on Bitcoin, Ethereum, DeFi, staking, wallets, taxes, and security. Step-by-step tutorials backed by hands-on testing.
Topics
Click to filter the libraryBrowse by topic
EthereumResearchBitcoinHow-ToAnalysisInvestingSecurityMarketDeFiRegulation
Showing 9 of 116
AnalysisAdvanced
Solidity vs Vyper vs Rust for Smart Contracts
Three main languages, three ecosystems, three security cultures. Where each dominates and why the choice matters.
8 min read
GuidesIntermediate
How to Verify a Contract Yourself
Source verification, proxy verification, and the trust it actually earns. The habit that protects you from unverified rugpulls.
6 min read
GuidesIntermediate
What Is an ABI, and Why You Should Care
The bridge between a contract and every wallet or dApp that talks to it. The one file that makes smart contracts usable.
6 min read
GuidesIntermediate
Reading a Smart Contract on Etherscan
Every tab explained — Read, Write, Events, Verified source, Proxy. The habit that separates casual users from serious ones.
8 min read
GuidesIntermediate
ERC-721 vs ERC-1155 vs ERC-404
NFT, semi-fungible, and the "hybrid." Same problem — a token with an identity — three different answers.
7 min read
GuidesIntermediate
ERC-20, Reading It Like an Engineer
approve/transferFrom, allowances, and why token approvals are the #1 phishing vector. What every ERC-20 token actually is under the hood.
8 min read
AnalysisAdvanced
Flashbots, MEV-Boost, and Why Blocks Look the Way They Do
Proposer/builder separation, MEV-Boost, and the market that decides what goes into each Ethereum block. Walked through with an actual block.
8 min read
AnalysisIntermediate
What MEV Really Is — Sandwich, Arbitrage, Liquidation
The three main patterns of Maximal Extractable Value, with real on-chain examples. The invisible market that shapes every Ethereum trade.
8 min read