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Diffstat (limited to 'bip-0049.mediawiki')
| -rw-r--r-- | bip-0049.mediawiki | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/bip-0049.mediawiki b/bip-0049.mediawiki index 74645a1..a13b437 100644 --- a/bip-0049.mediawiki +++ b/bip-0049.mediawiki @@ -2,11 +2,11 @@ BIP: 49 Layer: Applications Title: Derivation scheme for P2WPKH-nested-in-P2SH based accounts - Author: Daniel Weigl <Daniel.Weigl@mycelium.com> + Author: Daniel Weigl <DanielWeigl@gmx.at> Comments-Summary: No comments yet. Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0049 - Status: Draft - Type: Informational + Status: Final + Type: Standards Track Created: 2016-05-19 License: PD </pre> @@ -26,7 +26,7 @@ will detect the accounts and handle them appropriately. ===Considerations=== Two generally different approaches are possible for current BIP44 capable wallets: -1) Allow the user to use the same account(s) that they already uses, but add segregated witness encoded addresses to it. +1) Allow the user to use the same account(s) that they already use, but add segregated witness encoded addresses to it. 1.1) Use the same public keys as defined in BIP44, but in addition to the normal P2PKH address also derive the P2SH address from it. @@ -66,19 +66,28 @@ To derive the P2SH address from the above calculated public key, we use the enca scriptPubKey: HASH160 <20-byte-script-hash> EQUAL (0xA914{20-byte-script-hash}87) + +===Extended Key Version=== + +When serializing extended keys, this scheme uses alternate version bytes. Extended public keys use <code>0x049d7cb2</code> to produce a "ypub" prefix, and private keys use <code>0x049d7878</code> to produce a "yprv" prefix. Testnet uses <code>0x044a5262</code> "upub" and <code>0x044a4e28</code> "uprv." + +Additional registered version bytes are listed in [[https://github.com/satoshilabs/slips/blob/master/slip-0132.md|SLIP-0132]]. + + ==Backwards Compatibility== -This BIP is not backwards compatible by design as described under [#considerations]. An incompatible wallet will not discover accounts at all and the user will notice that something is wrong. +This BIP is not backwards compatible by design as described under [[#considerations|considerations]]. An incompatible wallet will not discover accounts at all and the user will notice that something is wrong. ==Test vectors== <pre> masterseedWords = abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about - masterseed = tprv8ZgxMBicQKsPe5YMU9gHen4Ez3ApihUfykaqUorj9t6FDqy3nP6eoXiAo2ssvpAjoLroQxHqr3R5nE3a5dU3DHTjTgJDd7zrbniJr6nrCzd (testnet) + masterseed = uprv8tXDerPXZ1QsVNjUJWTurs9kA1KGfKUAts74GCkcXtU8GwnH33GDRbNJpEqTvipfCyycARtQJhmdfWf8oKt41X9LL1zeD2pLsWmxEk3VAwd (testnet) // Account 0, root = m/49'/1'/0' - account0Xpriv = tprv8gRrNu65W2Msef2BdBSUgFdRTGzC8EwVXnV7UGS3faeXtuMVtGfEdidVeGbThs4ELEoayCAzZQ4uUji9DUiAs7erdVskqju7hrBcDvDsdbY (testnet) + account0Xpriv = uprv91G7gZkzehuMVxDJTYE6tLivdF8e4rvzSu1LFfKw3b2Qx1Aj8vpoFnHdfUZ3hmi9jsvPifmZ24RTN2KhwB8BfMLTVqaBReibyaFFcTP1s9n (testnet) + account0Xpub = upub5EFU65HtV5TeiSHmZZm7FUffBGy8UKeqp7vw43jYbvZPpoVsgU93oac7Wk3u6moKegAEWtGNF8DehrnHtv21XXEMYRUocHqguyjknFHYfgY (testnet) // Account 0, first receiving private key = m/49'/1'/0'/0/0 account0recvPrivateKey = cULrpoZGXiuC19Uhvykx7NugygA3k86b3hmdCeyvHYQZSxojGyXJ |