{"type":"rich","version":"1.0","author_name":"npub1fx98zxt3lzspjs5f4msr0fxysx5euucm29ghysryju7vpc9j0jzqtcl2d8","author_url":"https://nostr.ae/npub1fx98zxt3lzspjs5f4msr0fxysx5euucm29ghysryju7vpc9j0jzqtcl2d8","provider_name":"njump","provider_url":"https://nostr.ae","html":"📅 Original date posted:2022-05-06\n📝 Original message:OP_CAT was removed. If I remember correctly, some speculated that perhaps\nit was removed because it could allow covenants.\nI don't remember any technical concern about the OP besides enabling\ncovenants.\nBefore it was a common opinion that covenants shouldn't be enabled in\nbitcoin because, despite having good use case, there are some nasty attacks\nthat are enabled with them too. These days it seems the opinion of the\nbenefits being worth the dangers is quite generalized. Which is quite\nunderstandable given that more use cases have been thought since then.\n\nRe-enabling OP_CAT with the exact same OP would be a hardfork, but creating\na new OP_CAT2 that does the same would be a softfork.\nAs far a I know, this is the covenants proposal that has been implemented\nfor the longest time, if that's to be used as a selection criteria.\nAnd as always, this is not incompatible with deploying other convenant\nproposals later.\nPersonally I find the simplicity proposal the best one among all the\ncovenant proposals by far, including this one.\nBut I understand that despite the name, the proposal is harder to review\nand test than other proposals, for it wouldn't simply add covenants, but a\ncomplete new scripting language that is better in many senses.\nSpeedy covenants, on the other hand, is much simpler and has been\nimplemented for longer, so in principle, it should be easier to deploy in a\nspeedy manner.\n\nWhat are the main arguments against speedy covenants (aka op_cat2) and\nagainst deploying simplicity in bitcoin respectively?\n\nSorry if this was discussed before.\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20220507/2bd47223/attachment-0001.html\u003e"}