From: alicexbt <alicexbt@protonmail•com>
To: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: [bitcoin-dev] Coinjoin with less steps using ALL|ANYONECANPAY
Date: Mon, 22 May 2023 12:51:22 +0000 [thread overview]
Message-ID: <EWAXAmgFlZ8XQJOYO8VTH7Zj0tTAftwy-ylaGvf3Giealz1FFb97CbcxjP0q-Zu85XoAzOG0ivdYIKa_kG77ooHqBvCP7YOZOkb6yHmX75s=@protonmail.com> (raw)
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.
next reply other threads:[~2023-05-22 12:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-22 12:51 alicexbt [this message]
2023-05-22 22:51 ` Ben Carman
2023-05-23 12:17 ` Lucas Ontivero
2023-05-23 12:48 ` alicexbt
2023-05-23 12:34 ` alicexbt
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