[bitcoin-dev] Bech32m BIP: new checksum, and usage for segwit address

Pieter Wuille bitcoin-dev at wuille.net
Tue Jan 5 00:14:12 UTC 2021

Hello all,

here is a BIP draft for changing the checksum in native segwit addresses for v1 and higher, following the discussion in https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2020-December/018293.html

Overall, the idea is:
* Define a new encoding which is a tweaked variant of Bech32, called Bech32m. It refers to the Bech32 section of BIP173, which remains in effect.
* Define a new segwit address encoding which replaces the corresponding section in BIP173. It prescribes using Bech32 for v0 witness addresses, and Bech32m for other versions.

Comments, suggestions, ideas?


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