Taproot (BIP340 / 341 / 342) Quick refs : tweak.md, control-block.md, sighash-default.md, taptree.md Activated November 2021 (block 709,632). Three BIPs: - BIP340 — Schnorr signatures over secp256k1. - BIP341 — Taproot output: P2TR scriptPubKey, key-path / script-path spending, taptweak. - BIP342 — Tapscript: rules for script-path spends. See scripts/quick-ref/tapscript.md. Output construction If you have only a key-path (no scripts), and the tweak still prevents key reuse leaking the internal key. Key-path spend Privacy-equivalent to single-sig. The most efficient Taproot spend. Outsiders ca…