knots-kernel

Browser-side validation for the Bitcoin Knots BLAKE2b hardfork chain, built on the bitcoin-kernel pure-JS consensus engine. See PLAN.md, the live headers page, and docs/header-v2.md for the 164-byte header layout and the time-offset flag.

Step 1 is done: a zero-dependency BLAKE2b-256, Core's tagged SHA256, and the 164-byte header v2 codec + hash pipeline, verified against Bitcoin Knots' own test vectors.

npm test                       # Knots test vectors
node tools/check-live.mjs      # real headers from mempool.guide: fork block + tip

import { decodeHeaderV2, hashHeaderV2, checkProofOfWorkV2 } from './src/header-v2.js';
const h = decodeHeaderV2(bytes164);   // fields incl. height, txCount, flags
hashHeaderV2(h);                       // display-order block hash hex
checkProofOfWorkV2(h);                 // hash <= target(bits)

test/vectors/block_header_v2.json is copied from Bitcoin Knots (MIT).