sipa changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | http://bitcoin.ninja/ | This channel is logged. | For logs and more information, visit http://bitcoin.ninja
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<h4sh3d[m]>
hi everyone - I wrote a small paper on bitcoin-monero atomic swaps, based on the idea of using cross group discrete logarithm equality proof. If someone is interested you can find it here https://eprint.iacr.org/2020/1126
<sarang>
h4sh3d[m]: on a video presentation a while back, you (or one of your collaborators?) showed some kind of interactive demonstration of the possible paths that the swap process could take
<sarang>
Is this available anywhere?
<sarang>
I hadn't seen that kind of tool used before, and really liked it
<sarang>
Sorry to be so vague, but I don't recall if the name of the tool was mentioned at that time
<h4sh3d[m]>
we didn't made the file available IIRC, but I'll ask if you want
<remaeus>
yes please share
<remaeus>
does your work address any of the known issues with atomic swaps, such as the free option problem?
<sarang>
h4sh3d[m]: what's the name of the tool that was used to construct the demonstration?
<sarang>
Also, yes it was zkao :)
<sarang>
I had forgotten who had done the demo; sorry for the confusion!
<h4sh3d[m]>
the GreatSPN Graphical Editor
<sarang>
Thanks!
<h4sh3d[m]>
we represented the protocol as a petri net
<h4sh3d[m]>
Remæus: if you're talking about the potential slippage then no, the problem still remains
<remaeus>
specifically the option for the counterparty to abort the trade if price moves against them, but I think you answered my question thanks
<zkao>
there is a way to get rid of the free option problem by preagreeing on all potential prices using discreet log contracts, and the only missing signature is the oracle's
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<h4sh3d[m]>
sarang: if you manage to run the GreatSPN editor here is the content of a PNPRO file that describe the swap - https://pastebin.com/yhjEV5xg
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<yanmaani>
remaeus: That's not solvable within the atomic swap protocol, is it?
<yanmaani>
unless some genius comes up with some completely radical idea
<remaeus>
zkao says it can be solved by committing to prices using DLC, but that just moves us onward to the oracle problem
<yanmaani>
yes that's just idiotic. The correct thing to do is to make them with very low times
<yanmaani>
in say 30m the price can't move that much
<remaeus>
^ famous last words in bitcoin land
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<yanmaani>
If it does, then either one side will be filled at the old price or the deal will be cancelled
<yanmaani>
depending on in whose favor it is
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<zkao>
yanmaani: short timelock makes it more likely a double spending race btw 'refund tx' and 'complete swap tx' to arise
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