[bitcoin-dev] bitcoinj fork with Taproot support

[n1ms0s]

Hello all,
I am currently working on a fork of bitcoinj with basic Taproot support. Currently it supports basic sending and receiving with Taproot addresses using a bitcoinj SPV wallet.
See here: https://github.com/n1ms0s/bitcoinj

It supports the above along with public/private key tweaking. Feel free to take a look, and leave feedback or even work on it yourself and submit a pull request.

One issue I am running into right now though is when broadcasting a Taproot transaction to older nodes (old as in ~0.18.0) I get an error response of "Witness version reserved for soft-fork upgrades". Anyone have any idea why this happens? I have a stackexchange question open here for it:
https://bitcoin.stackexchange.com/questions/110787/issue-when-broadcasting-taproot-transaction-to-older-nodes

n1ms0s
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