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17 years* (lemmy.blahaj.zone)
submitted 9 months ago by to c/science_memes@mander.xyz
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cross-posted from: https://lemmy.blahaj.zone/post/37913022

https://mastodon.online/@FranckLeroy/109627512801712672

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[–] 11 points 9 months ago (3 children)

There are already cryptocurrencies with barely a fraction of the energy use of Bitcoin.

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  • [–] 2 points 9 months ago (1 child)

    Like my Excel spreadsheet!

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  • [–] 2 points 9 months ago

    Well, yeah.

    A blockchain is nothing more really than a database.

    The use case is when I don't want or have a trusted keeper of that data.

    See, if it's your excel spreadsheet, how do I know that you're not going to change the values on it? For some things that doesn't matter - but for things like funds between different parties, etc, that can be a big issue.

    Traditionally this has worked by having a trusted third party - a bank, a court, a escrow company, etc. But all these require lots of effort to have as well, and can be bad actors.

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