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Use Bech32m encoding for v1+ segwit addresses

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This also includes updates to the Python test framework implementation,
test vectors, and release notes.
This commit is contained in:
Pieter Wuille
2021-01-05 13:36:42 -08:00
parent 25b1c6e13d
commit fe5e495c31
9 changed files with 585 additions and 638 deletions
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BIPs that are implemented by Bitcoin Core (up-to-date up to **v0.21.0**):
BIPs that are implemented by Bitcoin Core (up-to-date up to **v22.0**):
* [`BIP 9`](https://github.com/bitcoin/bips/blob/master/bip-0009.mediawiki): The changes allowing multiple soft-forks to be deployed in parallel have been implemented since **v0.12.1** ([PR #7575](https://github.com/bitcoin/bitcoin/pull/7575))
* [`BIP 11`](https://github.com/bitcoin/bips/blob/master/bip-0011.mediawiki): Multisig outputs are standard since **v0.6.0** ([PR #669](https://github.com/bitcoin/bitcoin/pull/669)).
@@ -50,3 +50,4 @@ BIPs that are implemented by Bitcoin Core (up-to-date up to **v0.21.0**):
* [`BIP 325`](https://github.com/bitcoin/bips/blob/master/bip-0325.mediawiki): Signet test network is supported as of **v0.21.0** ([PR 18267](https://github.com/bitcoin/bitcoin/pull/18267)).
* [`BIP 339`](https://github.com/bitcoin/bips/blob/master/bip-0339.mediawiki): Relay of transactions by wtxid is supported as of **v0.21.0** ([PR 18044](https://github.com/bitcoin/bitcoin/pull/18044)).
* [`BIP 340`](https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki) [`341`](https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki) [`342`](https://github.com/bitcoin/bips/blob/master/bip-0342.mediawiki): Validation rules for Taproot (including Schnorr signatures and Tapscript leaves) are implemented as of **v0.21.0** ([PR 19953](https://github.com/bitcoin/bitcoin/pull/19953)), without mainnet activation.
* [`BIP 350`](https://github.com/bitcoin/bips/blob/master/bip-0350.mediawiki): Addresses for native v1+ segregated Witness outputs use Bech32m instead of Bech32 as of **v22.0** ([PR 20861](https://github.com/bitcoin/bitcoin/pull/20861)).

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Updated RPCs
------------
- Due to [BIP 350](https://github.com/bitcoin/bips/blob/master/bip-0350.mediawiki)
being implemented, behavior for all RPCs that accept addresses is changed when
a native witness version 1 (or higher) is passed. These now require a Bech32m
encoding instead of a Bech32 one, and Bech32m encoding will be used for such
addresses in RPC output as well. No version 1 addresses should be created
for mainnet until consensus rules are adopted that give them meaning
(e.g. through [BIP 341](https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki)).
Once that happens, Bech32m is expected to be used for them, so this shouldn't
affect any production systems, but may be observed on other networks where such
addresses already have meaning (like signet).