Hardware wallets store crypto keys offline for maximum security. Learn how they work, set one up safely, avoid scams, and choose when to use one. For beginners.
A seed phrase is a 12-24 word backup that controls your crypto. Learn how BIP39 works, 12 vs 24 words, best security practices, and safe recovery steps.
Gas fees are blockchain transaction costs. Learn Ethereum's base fee + tip model, how fees differ by network, and how to cut costs using L2s, tips, and timing.
How AI agents pay with crypto using wallets, smart contracts, and exchanges. Learn flows, security controls, and real cases. For builders and curious users.
Layer 2 blockchains scale Ethereum and Bitcoin with rollups, channels, and sidechains. Learn types, security trade-offs, costs, and how to use L2s safely.
Proving Satoshi Nakamoto requires cryptographic proof: signed messages or coin moves from 2009 keys. Learn what counts, what fails, and how to verify.
