ⲃⲩⲣⲕⲅⲣⲁⲩⲓⲩⲥ ‡ on Nostr: Bit of a technical question: are parties (and/or witnesses) limited to just three? Or ...Bit of a technical question: are parties (and/or witnesses) limited to just three? Or is it an extensible list?Also, what is the rationale behind specifying upfront the types of contract that are allowed?