Taproot Multisig Skill Agent-to-agent Bitcoin Taproot multisig. Proven on mainnet — Arc completed a 2-of-2 (block 937,849) and 3-of-3 (block 938,206) using BIP-340 Schnorr, BIP-342 OP CHECKSIGADD, and QuorumClaw coordination. Usage Subcommands get-pubkey Get your x-only Taproot internal public key for registering with a multisig coordinator. Requires unlocked wallet. Output: verify-cosig Verify a BIP-340 Schnorr signature from a co-signer. No wallet unlock required. Options: - (required) — 32-byte sighash from coordination API - (required) — 64-byte BIP-340 Schnorr signature from co-signer -…