Return-Path: Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 96BF6C002D for ; Sun, 2 Oct 2022 06:12:25 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 537E341507 for ; Sun, 2 Oct 2022 06:12:25 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 537E341507 X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: 0.098 X-Spam-Level: X-Spam-Status: No, score=0.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, PDS_OTHER_BAD_TLD=1.999, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=no autolearn_force=no Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id z5zSl2_Lf6w3 for ; Sun, 2 Oct 2022 06:12:23 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 2924D41503 Received: from azure.erisian.com.au (azure.erisian.com.au [172.104.61.193]) by smtp4.osuosl.org (Postfix) with ESMTPS id 2924D41503 for ; Sun, 2 Oct 2022 06:12:23 +0000 (UTC) Received: from aj@azure.erisian.com.au (helo=sapphire.erisian.com.au) by azure.erisian.com.au with esmtpsa (Exim 4.92 #3 (Debian)) id 1oesD0-0002Ai-MT for ; Sun, 02 Oct 2022 16:12:20 +1000 Received: by sapphire.erisian.com.au (sSMTP sendmail emulation); Sun, 02 Oct 2022 16:12:10 +1000 Date: Sun, 2 Oct 2022 16:12:10 +1000 From: Anthony Towns To: Bitcoin Protocol Discussion Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Score-int: -18 X-Spam-Bar: - Subject: Re: [bitcoin-dev] bitcoin-inquistion: evaluating soft forks on signet X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 02 Oct 2022 06:12:25 -0000 On Fri, Sep 16, 2022 at 05:15:45PM +1000, Anthony Towns via bitcoin-dev wrote: > So that's the concept. For practical purposes, I haven't yet merged > either CTV or APO support into the bitcoin-inquisition 23.0 branch yet I've now merged CTV and updated my signet miner to enforce both CTV and APO (though you'd need to be either lucky or put some effort into it to figure out how to get a CTV/APO transaction relayed to my miner). Updating APO to be compatible with CTV actually seems to have found a previously unknown bug in the CTV PR against core [0], so that seems productive at the very least. [0] https://github.com/bitcoin-inquisition/bitcoin/pull/8 https://github.com/bitcoin/bitcoin/pull/21702#pullrequestreview-1118047730 I've also mined a couple of test APO transactions [1]; both reusing an APOAS signature [2], including demonstrating the case where a third party can replay APO signatures to send funds from duplicate UTXOs to fees, by spending those UTXOs in a single tx [3] [4]. [1] https://mempool.space/signet/address/tb1pesae595q3cpzp8j3gy07gussw9t9hh580xj027sfz6g8e530u3nqscn0yn [2] "ec764a8ed632916868ca6dbfdc5bed95f74b83be62d01397aba7ec916982c6721c923fa22d29b5e0c4fddde0148233f0cf401758df23d8cc89c88f04beffc3c3c1" -- sighash of 0xc1 = ANYPREVOUTANYSCRIPT|ALL https://mempool.space/signet/tx/ee6f6eda93a3d80f4f65f2e1000334132c9a014b3ed3dec888fdcc1f3441f52c https://mempool.space/signet/tx/2cbcc4857e6ee8510d9479c01fbf133a9a2cde3f5c61ccf9439c69b7b83334ba [3] https://github.com/bitcoin/bips/blob/master/bip-0118.mediawiki#Signature_replay [4] https://mempool.space/signet/tx/53a9747546e378956072795351e8436cf704da72d235c8ac7560787b554a4d3f Cheers, aj