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What happened to Schnorr Cross Signature Input Aggregation (CISA)?
127 sats \ 2 comments \ @IgnaciobTato 16 Feb 2024 bitcoin
https://twitter.com/softsimon_/status/1758081769121984833 Everyone is talking about Covenants as the next important upgrade to Bitcoin. But what happened to Schnorr Cross Signature Input Aggregation (CISA)?
We would not have this problem with consolidation transactions being very heavy on the blockchain because 60 signatures can be aggregated into 1.
-- What people think? Being able to aggregate stuff under one sig could have significant impact on bitcoin
https://m.stacker.news/16346
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0 sats \ 1 reply \ @oomahq 16 Feb 2024
I never understood why the Taproot proposal didn't include CISA.
Taproot transactions are not clearly cheaper than native SegWit, so there's no economic incentive to use them. But with CISA they would be.
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10 sats \ 0 replies \ @nerd2ninja 16 Feb 2024
I believe that's because the developers didn't feel it was ready yet, but here's the repo for it:
https://github.com/BlockstreamResearch/cross-input-aggregation
I'm totally onboard with CISA (when its ready), but I don't see it solving the multi-party channel problems the lightning devs are trying to solve. Covenants propose to solve some of the problems with multi-party channels, but not all of them.
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