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Merge pull request #611 from zylstra/patch-1

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Luke Dashjr 2017-11-16 13:22:18 +00:00 committed by GitHub
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bip-0049.mediawiki
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@ -20,19 +20,19 @@ This BIP defines the derivation scheme for HD wallets using the P2WPKH-nested-in
With the usage of P2WPKH-nested-in-P2SH ([[bip-0141.mediawiki#p2wpkh-nested-in-bip16-p2sh|BIP 141]]) 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 a dedicated segregate witness accounts, which ensures that only wallets compatible with this BIP
will detect the account and handle them appropriately.
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===
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 uses, 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.
1.2) Use the same account root, but branch off and derive different external and internal chain roots to derive dedicated public keys for the segregated witness addresses.
2) Create dedicated accounts only used for segregated witness addresses.
2) Create dedicated accounts used only for segregated witness addresses.
The solutions from point 1 have a common disadvantage: if a user imports/recovers a BIP49-compatible wallet masterseed into/in a non-BIP49-compatible wallet, the account might show up but also it might miss some UTXOs.
@ -53,7 +53,7 @@ serialization method.
m / purpose' / coin_type' / account' / change / address_index
</pre>
For the `purpose`-path level it uses `49'`. The rest of the levels are used as defined in BIP44
For the `purpose`-path level it uses `49'`. The rest of the levels are used as defined in BIP44.
===Address derivation===
@ -68,7 +68,7 @@ To derive the P2SH address from the above calculated public key, we use the enca
==Backwards Compatibility==
This BIP is not backwards compatible by design as described under [#considerations]. A not compatible 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]. An incompatible wallet will not discover accounts at all and the user will notice that something is wrong.
==Test vectors==