diff --git a/README.mediawiki b/README.mediawiki index 731e36c9..9abe3fde 100644 --- a/README.mediawiki +++ b/README.mediawiki @@ -407,6 +407,13 @@ Those proposing changes should consider that ultimately consent may rest with th | Standard | Draft |- +| [[bip-0084.mediawiki|84]] +| Applications +| Derivation scheme for P2WPKH based accounts +| Pavol Rusnak +| Informational +| Draft +|- | [[bip-0090.mediawiki|90]] | Consensus (hard fork) | Buried Deployments diff --git a/bip-0084.mediawiki b/bip-0084.mediawiki new file mode 100644 index 00000000..ab093f42 --- /dev/null +++ b/bip-0084.mediawiki @@ -0,0 +1,90 @@ +
+ BIP: 84 + Layer: Applications + Title: Derivation scheme for P2WPKH based accounts + Author: Pavol Rusnak+ +==Abstract== + +This BIP defines the derivation scheme for HD wallets using the P2WPKH ([[bip-0173.mediawiki|BIP 173]]) serialization format for segregated witness transactions. + +==Motivation== + +With the usage of P2WPKH transactions it is necessary to have a common derivation scheme. +It allows the user to use different HD wallets with the same masterseed and/or a single account seamlessly. + +Thus the user needs to create dedicated segregated witness accounts, which ensures that only wallets compatible with this BIP will detect the accounts and handle them appropriately. + +===Considerations=== + +We use the same rationale as described in Considerations section of [[bip-0049.mediawiki|BIP 49]]. + +==Specifications== + +This BIP defines the two needed steps to derive multiple deterministic addresses based on a [[bip-0032.mediawiki|BIP 32]] root account. + +===Public key derivation=== + +To derive a public key from the root account, this BIP uses the same account-structure as defined in [[bip-0044.mediawiki|BIP 44]] and [[bip-0049.mediawiki|BIP 49]], but only uses a different purpose value to indicate the different transaction serialization method. + ++ Comments-Summary: No comments yet. + Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0084 + Status: Draft + Type: Informational + Created: 2017-12-28 + License: CC0-1.0 +
+m / purpose' / coin_type' / account' / change / address_index ++ +For the
purpose
-path level it uses 84'
. The rest of the levels are used as defined in BIP44 or BIP49.
+
+
+===Address derivation===
+
+To derive the P2WPKH address from the above calculated public key, we use the encapsulation defined in [[bip-0141.mediawiki#p2wpkh|BIP 141]]:
+
+
+ witness: + mnemonic = abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about + rootnode = zprvAWgYBBk7JR8Gjrh4UJQ2uJdG1r3WNRRfURiABBE3RvMXYSrRJL62XuezvGdPvG6GFBZduosCc1YP5wixPox7zhZLfiUm8aunE96BBa4Kei5 + + // Account 0, root = m/84'/0'/0' + xpriv = zprvAdG4iTXWBoARxkkzNpNh8r6Qag3irQB8PzEMkAFeTRXxHpbF9z4QgEvBRmfvqWvGp42t42nvgGpNgYSJA9iefm1yYNZKEm7z6qUWCroSQnE + + // Account 0, first receiving address = m/84'/0'/0'/0/0 + privkey = KyZpNDKnfs94vbrwhJneDi77V6jF64PWPF8x5cdJb8ifgg2DUc9d + pubkey = 0330d54fd0dd420a6e5f8d3624f5f3482cae350f79d5f0753bf5beef9c2d91af3c + address = bc1qcr8te4kr609gcawutmrza0j4xv80jy8z306fyu + + // Account 0, second receiving address = m/84'/0'/0'/0/1 + privkey = Kxpf5b8p3qX56DKEe5NqWbNUP9MnqoRFzZwHRtsFqhzuvUJsYZCy + pubkey = 03e775fd51f0dfb8cd865d9ff1cca2a158cf651fe997fdc9fee9c1d3b5e995ea77 + address = bc1qnjg0jd8228aq7egyzacy8cys3knf9xvrerkf9g + + // Account 0, first change address = m/84'/0'/0'/1/0 + privkey = KxuoxufJL5csa1Wieb2kp29VNdn92Us8CoaUG3aGtPtcF3AzeXvF + pubkey = 03025324888e429ab8e3dbaf1f7802648b9cd01e9b418485c5fa4c1b9b5700e1a6 + address = bc1q8c6fshw2dlwun7ekn9qwf37cu2rn755upcp6el ++ +==Reference== + +* [[bip-0032.mediawiki|BIP32 - Hierarchical Deterministic Wallets]] +* [[bip-0043.mediawiki|BIP43 - Purpose Field for Deterministic Wallets]] +* [[bip-0044.mediawiki|BIP44 - Multi-Account Hierarchy for Deterministic Wallets]] +* [[bip-0049.mediawiki|BIP49 - Derivation scheme for P2WPKH-nested-in-P2SH based accounts]] +* [[bip-0141.mediawiki|BIP141 - Segregated Witness (Consensus layer)]] +* [[bip-0173.mediawiki|BIP173 - Base32 address format for native v0-16 witness outputs]]