Bearer bonds? More seriously, I remember reading this paper: http://dsns.csie.nctu.edu.tw/research/crypto/HTML/PDF/C88/319.PDF http://dsns.csie.nctu.edu.tw/res

Bearer bonds? More seriously, I remember reading this paper: http://dsns.csie.nctu.edu.tw/research/crypto/HTML/PDF/C88/319.PDF http://dsns.csie.nctu.edu.tw/research/crypto/HTML/PDF/C88/31... a few years back. That only guarantees the buyer's anonymity (the seller still has to deposit money in his bank which is, of course, traceable). And I always liked the idea of 'assasination markets.' It isn't anonymous, but still pretty neat ... If I wanted a copy of TMobile's data, I could set up a prediction market where people could bet what hour TMobile's data would show up in my mailbox. Bets would cost, say $100 (to prevent random guessing), but would pay off $1,000,000 if you 'guessed' right. When TMobile's data shows up in my mailbox, I can pay the person who 'guessed' the right time.