Interesting. Years back, I was briefly involved with a somewhat similar project, where coins were used and the second sig was printed under a tamper-evident sti

Interesting. Years back, I was briefly involved with a somewhat similar project, where coins were used and the second sig was printed under a tamper-evident sticker. That way if the site disappeared there was still a way to retrieve the funds. Can't even remember the name of it to be honest, wonder if it still exists.