I hear ya. Just trying to front run the legal definitions. They catch up, eventually, whether private law (contracts) or public law (legislation). The big insight for me was the clarification between custodianship and trusteeship

I would say that it will be defined differently by the use case and end up not decided by you. It is just code. It is simply a privately signed message. The contents of the message or who is corresponding is no ones business any more than a private letter I write and send in the mail. Bitcoin devs open up legal issues by creating companies and defining things in poor analogies. Let safebox = safebox.

Been down this road before. Just focusing on the wording technology.