hashcash topic
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hashcash repositories
bitcoin-history
24
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11
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Internet History, Digital Cryptography, Cypherpunks, Money \ Economics... All the history is related to Bitcoin.
hashcash
18
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4
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Pure PHP implementation of Hashcash 1.
hashcasher
15
Stars
4
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Protect online forms from spam by making them perform Proof of Work (PoW).