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There were proposals for this sort of thing a while back, but they never caught on: https://en.wikipedia.org/wiki/Hashcash https://en.wikipedia.org/wiki/Hashca
by zootboy 4y ago
There were proposals for this sort of thing a while back, but they never caught on:
https://en.wikipedia.org/wiki/Hashcash https://en.wikipedia.org/wiki/Hashcash
- barrkel 4y agoThat's almost exactly my off the cuff suggestion. Of course my brain is seeded by both bitcoin (finding a hash as proof of work) and HLL (which counts leading hash digits to estimate set cardinality).