4 ms·
Funnily enough, proof-of-work was originally invented to combat spam and denial of service attacks[1][2]. I asked that in a reply, and it seems that the large g
by diafygi 12y ago
Funnily enough, proof-of-work was originally invented to combat spam and denial of service attacks[1][2]. I asked that in a reply, and it seems that the large gap between server compute power and mobile compute power would make a reasonably taxing proof-of-work system too costly for mobile phones[3].
[1] - https://en.wikipedia.org/wiki/Hashcash https://en.wikipedia.org/wiki/Hashcash
[2] - http://hashcash.org/papers/pvp.pdf http://hashcash.org/papers/pvp.pdf
[3] - https://moderncrypto.org/mail-archive/messaging/2014/000782.html https://moderncrypto.org/mail-archive/messaging/2014/000782....
- drfuchs 12y agoJust to be clear, "Pricing via Processing or Combatting Junk Mail" (Crypto 1992), by Dwork and Naor, invented the idea of Proof Of Work, suggested it for fighting Spam (before the term was even coined!), provided actual functions, and more. This predates HashCash by half a decade. [Edited to de-obfuscate.]
- diafygi 12y agoUmmm, that's the paper referenced in [2]…