Damus
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jb55
@jb55
brainstorming opcodes that could enable non-interactive collaborative transactions. imagine if anyone could batch a bunch of mempool transactions together for coinjoins. with op_txhash you commit to your output which creates a link, so you can’t use stacking. maybe its not possible, but fun to think about. Has anyone thought about this? @waxwing @Max i’m a complete noob in this area 😅
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Vanessa · 106w
Mmhmm…🤔
Slipstream · 106w
Maybe some kind of homomorphic encrypted mempool?
waxwing · 106w
FWIW there have been a number of thoughts over the years in this general area. I came up with SNICKER in 2017, there's a draft BIP on my gist (AdamISZ), not sure why it was never assigned a number. I actually even implemented it in Joinmarket and the code is still there. SNICKER was the simplest way...
pleb · 106w
coinjoin coordination over nostr relays somehow would be super cool. Also terrifying
Max · 106w
I think every coinjoin researcher has this moment of eureka where you think non-interactive is so easy with the right sighashflag. But then realize that if input A signs output B there is no privacy...