Multi-Signature BIPs

Multi-signature functionality. 5 proposals.

BIP 10: Multi-Sig Transaction Distribution: Closed. Proposed a standard format for passing a partly signed multi-signature transaction between the people who must sign it. Coins that need several parties' approval to spend require this kind of…
BIP 11 (M-of-N multisig): M-of-N Standard Transactions: Deployed. Made "M-of-N" transactions, which require any M signatures out of N possible keys, a standard type that nodes relay. This enabled shared-control arrangements such as escrow or wallets needing two of…
BIP 19: M-of-N Standard Transactions (Low SigOp): Closed. Proposed multi-signature transactions needing M of N keys as a standard type using the existing script system, designed to count fewer signature checks. It was meant as an interim option before P2SH…
BIP 45: Structure for Deterministic P2SH Multisignature Wallets: Complete. Defines a key structure for HD wallets shared among several co-signers using P2SH multisig. It lets each participant independently generate the same series of shared addresses without exchanging new…
BIP 67: Deterministic Pay-to-script-hash multi-signature addresses through public key sorting: Complete. Specifies sorting the public keys in a multisig setup into a fixed order, so the same keys always produce the same P2SH address. Co-signers can then independently compute matching addresses without…

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