Bitcoin may be useful but the calculations done for its proof-of-work don't do anything useful outside of Bitcoin. The same is true of Chia. It uses up hard dri

Bitcoin may be useful but the calculations done for its proof-of-work don't do anything useful outside of Bitcoin. The same is true of Chia. It uses up hard drive space as a mechanism to validate transactions but IIRC that space is essentially random bytes. On the other hand, with arweave or filecoin you are storing files for people.