10:3210:32, 21 February 2015diffhist+153
Hashcash
fix wording around: hashcash is not "an email header" its a crypto algorithm, that for email applications is encoded into an email header
10:2710:27, 21 February 2015diffhist+881
Hashcash
not sure why someone deleted, please stop! re-add bitcoin use case, hashcash is more widely known for its use in bitcoin than for email spam at this point
09:3809:38, 27 November 2012diffhist+685
Proof of work
add other names for proof of work from literature, fix incorrect claim that interactive protocols are significantly lower variance, also explain how variance is controlled, and explain existence of fixed-cost functions
22 October 2012
00:1200:12, 22 October 2012diffhist+61 m
Apache SpamAssassin
sentence to say what hashcash is (nb its not actually a network protocol .. it is 100% scalable as there is no infrastructure beyond normal email, everything is in the clients