<p>Yes, it would be 2 tx signed by both.  But I think it would be best that both tx give back always the BTC to the seller, and the security deposits to the other peer.</p>
<p>In case of disagreement and both online, yes, any of the traders needs to publish the normal donation tx.</p>
<p>If the unresponsive trader is the BTC seller, I think the buyer would always also want to publish the normal donation tx, because if the BTC seller is dishonest and is faster publishing his "undo tx", the seller will scam the buyer.  But if it is the buyer who is unresponsive (which I understand is the more likely scenario), the BTC seller is better off by waiting and publishing the "undo tx" instead of going through all the dispute nightmare.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/bisq-network/proposals/issues/52?email_source=notifications&email_token=AJFFTNQNG2EAF2CXKJQIYKLQLO4YJA5CNFSM4F7GLJYKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7TC3TA#issuecomment-535178700">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AJFFTNVNV7FXIN2GPG2HAOLQLO4YJANCNFSM4F7GLJYA">mute the thread</a>.<img src="https://github.com/notifications/beacon/AJFFTNVH4Y27XESIZ3M2DDTQLO4YJA5CNFSM4F7GLJYKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7TC3TA.gif" height="1" width="1" alt="" /></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/bisq-network/proposals/issues/52?email_source=notifications\u0026email_token=AJFFTNQNG2EAF2CXKJQIYKLQLO4YJA5CNFSM4F7GLJYKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7TC3TA#issuecomment-535178700",
"url": "https://github.com/bisq-network/proposals/issues/52?email_source=notifications\u0026email_token=AJFFTNQNG2EAF2CXKJQIYKLQLO4YJA5CNFSM4F7GLJYKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7TC3TA#issuecomment-535178700",
"name": "View Issue"
},
"description": "View this Issue on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>