diff --git a/bip-0090.mediawiki b/bip-0090.mediawiki index 11961f60..6cd2ac91 100644 --- a/bip-0090.mediawiki +++ b/bip-0090.mediawiki @@ -25,10 +25,24 @@ While most web wallets do not presently facilitate the setup of multisignature a Many wallet as a service providers use a 2of3 multi-signature schema where the user stores 1 of the keys (offline) as backup while using the other key for daily use and letting the service cosign his transactions. This standard will help in enabling a party other than the service provider to recover the wallet without any help from the service provider. -==Implementation== +==Specification== -For a set of public keys, ensure that they have been received in compressed form, sort them lexicographically according to their binary representation before using the resulting list of keys in a standard multisig redeem script. Hash the redeem script according to BIP-0016 to get the P2SH address. +For a set of public keys, ensure that they have been received in compressed form: + 022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da + 03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9 + 021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18 + +Sort them lexicographically according to their binary representation: + 021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18 + 022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da + 03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9 +..before using the resulting list of keys in a standard multisig redeem script: + OP_m 021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18 022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da 03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9 OP_n OP_CHECKSIG + +Hash the redeem script according to BIP-0016 to get the P2SH address. + 3Q4sF6tv9wsdqu2NtARzNCpQgwifm2rAba + ==Compatibility== * Uncompressed keys are incompatible with this specificiation. A compatible implementation should not automatically compress keys. Receiving an uncompressed key from a multisig participant should be interpreted as a sign that the user has an incompatible implementation.