Hi Bitcoin Developers, I recently experimented with different sighash flags, PSBTs and realized ALL|ANYONECANPAY could be used to reduce some steps in coinjoin.
Steps: - Register outputs. - One user creates a signed PSBT with 1 input, all registered outputs and ALL|ANYONECANPAY sighash flag. Other participants keep adding their inputs to PSBT. - Finalize and broadcast the transaction. Proof of Concept (Aice and Bob): https://gitlab.com/-/snippets/2542297 Tx: https://mempool.space/testnet/tx/c6dd626591dca7e25bbd516f01b23171eb0f2b623471fcf8e073c87c1179c492 I plan to use this in joinstr if there are no major drawbacks and it can even be implemented by other coinjoin implementations. /dev/fd0 floppy disk guy Sent with Proton Mail secure email. _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
