Bitcoin Taproot support / bech32m addresses

[AndreasGassmann]

Taproot support is currently being added to bitcoinjs-lib. Once their integration is released, we can add a new protocol, Bitcoin (Taproot).

bitcoinjs/bitcoinjs-lib#1742

[motorina0]

@AndreasGassmann I just wanted to let you know that I have updated the PR above, now it uses (an injectable) tiny-secp256k1 for the taproot ecc functions (previously it had custom logic).

Any review / comment / testcase / suggestion is appreciated. It would help us get this logic quicker in the official release.

[AndreasGassmann]

Thanks for your work and updating the PR. I will hopefully have time to look into it in the next few days and will give you feedback. Is there documentation available how tiny-secp256k1 can be injected and any other notable changes?

[motorina0]

Is there documentation available how tiny-secp256k1 can be injected

• there are samples in the unit tests here and here
  • basically p2tr takes an extra optional parameter that must respect the TinySecp256k1Interface interface
  • there will also be some documentation once we decide on the final version
  • the fixtures can serve as sample data

any other notable changes

• nothing extra. The code is actually lighter, some ECC logic has been replaced and tiny-secp256k1 used instead

[bZ404]

Awesome