The problem is where to store the data
WebTorrent is the answer you seek (endorsed by Fiatjaf)
https://bountsr.org/p2p-filesharing/
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I think IPFS is also a great alternative.
Fiatjaf hates IPFS (though don’t ask me to explain his reasoning, I know nothing about IPFS)
He hates DHT and finds IPFS slow and unusable. I remember on a post or podcast he mentioned this.