Slides are up!
tldr: Payjoins / Coinjoins on hardware wallets is no bueno.
* Quick intro to payjoin and coinjoin cooperative spend transactions
* All the things current hwws / signing devices get wrong when displaying these txs to users (yes, nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl blows it, too)
* Work-in-progress R&D on some better approaches.
Presented and discussed last night at #chibitdevs
