http://yw7nc56v4nsudvwewhmhhwltxpncedfuc43qbubj4nmwhdhwtiu4o6yd.onion/t/crypto-anarchy-and-virtual-communities-1994/92
David Chaum, “Untraceable Electronic Mail, Return Addresses, and Digital Pseudonyms,” Comm. ACM 24, 2, February 1981, pp. 84-88. Cypherpunks-style remailers are a form of Chaum’s “digital mixes,” albeit far from ideal. David Chaum, “Security without Identification: Transaction Systems to make Big Brother Obsolete,” Comm.