Hard Problems in Cryptocurrency: Five Years Later

Re:Hard Problems in Cryptocurrency: Five Years Later by wyldfire on Sunday November 24, 2019 @12:08AM (#21618493)

Besides proof-of-stake, there's also a coin that tries (tried?) a proof-of-work with greater public utility: Primecoin [1]. It creates Cunningham chains of prime numbers [2].

[1] https://en.wikipedia.org/wiki/Primecoin

[2] https://en.wikipedia.org/wiki/Cunningham_chain

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Re:Hard Problems in Cryptocurrency: Five Years Later by tylersmith on Sunday November 24, 2019 @08:28PM (#21624764)

"Useful PoW" is a dead end. Good PoW functions require properties that rule out real world useful problems.

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Re:Hard Problems in Cryptocurrency: Five Years Later by toastal on Sunday November 24, 2019 @02:14AM (#21618939)

Wasn't there also like CureCoin that unfolds proteins for medical application?

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Re:Hard Problems in Cryptocurrency: Five Years Later by haakon on Sunday November 24, 2019 @06:55AM (#21619849)

Yes, and there's also SolarCoin which rewards users for producing renewable energy. The problem is that these coins are centralised, so while they may be very useful for what they do, they don't solve the same problem as proof-of-work coins which aim to be decentralised.

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Re:Hard Problems in Cryptocurrency: Five Years Later by untoreh on Sunday November 24, 2019 @10:56PM (#21625342)

there is also gridcoin but they are not useful pow. they are proof of stake where the stake is the amount of contribution towards boinc projects and the likes, and they are affected by the oracle problem

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Re:Hard Problems in Cryptocurrency: Five Years Later by swinglock on Sunday November 24, 2019 @02:50AM (#21619033)

Is that useful for anything other than the Primecoin?

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