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The suggestion for PoW for email bonds was called Hashcash, by Adam Back, and involved partial hash collisions. http://www.hashcash.org/ http://www.hashcash.or
by sneak 3y ago
The suggestion for PoW for email bonds was called Hashcash, by Adam Back, and involved partial hash collisions.
http://www.hashcash.org/ http://www.hashcash.org/
It served as the inspiration for Bitcoin's PoW mining, interestingly enough.
- drfuchs 3y agoThe original invention of PoW, as well as the idea of using it for email, was years earlier; see Naor and Dwork's "Pricing via Processing, Or, Combatting Junk Mail" in CRYPTO'92.