Why do cryptocurrencies use proof of work that only serves to do useless computations instead of using a computing...

Why do cryptocurrencies use proof of work that only serves to do useless computations instead of using a computing power distribution system, so we could have a grid computer? The advantage is that those who spend money on powerful computers, but use it only for simpler things, could "exchange" that computing power that is unused for an amount of crypto and people who have weaker computers or people who need more computing power. computing will be able to access this without relying on a centralized company.

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remote processing power is useless to people with personal computers
you can't use a connection to a computer half a world away to make your video game run faster

There are cryptos that do this, they never really took off. Probably -90% at the moment.

>"exchange" that computing power that is unused for an amount of crypto
and where would that crypto come from, genius?

>video game run faster
>muh vidya

from the amout of computation you give

came here to post what this fine user said they actually built that years ago, those coins have shit value and Any Forums drones don't care about it because it requires doing actual work, they only want to see number go up

you know that the crypto has to be made FROM that computation power, right? so you arent giving any power away if it's being used to make crypto that pays the strong computers

for that to be implemented in a sane way, we would need a proper distributed OS

all datacenters already function as a big distributed OS
but that's more reason it's a shit idea, just pay people in USD for participating in the grid. nobody actually wants to get paid in crypto ponzi tokens

that's the only thing you need a fast computer for

you can use the computation power to compute some function that other user wants, instead of calculating some random hash function.

>scientific computing
>3d modeling (not for games)

computing data the user wants can't be used to create cryptocurerncy
you have to run the useless function

>all datacenters already function as a big distributed OS
all datacenters already function as a BAD big distributed OS
>but that's more reason it's a shit idea, just pay people in USD for participating in the grid. nobody actually wants to get paid in crypto ponzi tokens
At least with this implementation, you can get some immediate benefit (compute some stuff)

>computing data the user wants can't be used to create cryptocurerncy
why?
>you have to run the useless function
why?

no, crypto doesnt come out of thin air. you either compute the hash that generates the coin, or you compute whatever the other computer is requesting. you dont understand what cryptocurrency is

tl;dr no one has the balls, the vision and enough capital to make a truly ubiquitous distributed and decentralized system. the closest we got to was buttcoin and the bittorrent protocol.

because that's how it works
crypto isn't just random computation, its an algorithm with specific cryptographic properites, and the result of that compuation is never going to be useful for anything else

tl;dr is that you dont understand crypto, OP

>truly ubiquitous distributed and decentralized system
no such thing

this would lead us to create a global computer that would accelerate and bring the singularity