Blind Merged Mining with covenants ( sighash_anyprevout / op_ctv ).

https://gist.github.com/RubenSomsen/5e4be6d18e5fa526b17d8b34906b16a5 nostr:note17d2u40u36z0f934h5uwgqe59wvw9eqghz5gqgzyxm7dlyy8qxhts8q028v