https://www.mail-archive.com/cryptograp ... 09959.html
I'll highlight a few things here which I think are worth considering.
Although little known Wei Dai had a big influence on Bitcoin with his b-money design. b-money is quoted in the Bitcoin whitepaper. I highly recommend reading the b-money article.
http://www.weidai.com/bmoney.txt
The last paragraph reads:
The protocol proposed in this article allows untraceable pseudonymous entities to cooperate with each other more efficiently, by providing them with a medium of exchange and a method of enforcing contracts. The protocol can probably be made more efficient and secure, but I hope this is a step toward making crypto-anarchy a practical as well as theoretical possibility.