Blockchain from Scratch: A Technical Intro with a Toy App You Can Actually Run
A ground-up, technical introduction to blockchains — hashes, blocks, Merkle trees, proof-of-work, consensus — paired with a ~200-line TypeScript toy chain you can run, fork, and break. The version of the explanation that assumes you're a developer, not an investor.
BlockchainCryptographyDistributed Systems
