There's an interesting idea in here with the combination of proof of work to mitigate spam and the gamification of participating in the application through Bitcoin mining. Could a Nostr client be a mining pool which generates hashes by signing notes?
https://fountain.fm/episode/mOG1T3bNlPaVShjmT7HE
https://fountain.fm/episode/mOG1T3bNlPaVShjmT7HE
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