A blockchain retains a complete, coherent, censorship-resistant listing of what's available on a network in a way that local or federated key-pairs can not.
There is no search all of PeerTube. There is search all of LBRY.
There is no search all of PeerTube. There is search all of LBRY.
How do you handle when a video stops getting hosted? Does it just keep showing up in search results, and then give an error whenever anyone tries to view it?
And if that's not the case -- if an unhosted, missing video can be removed from the blockchain by adding a revoke transaction or something, then how is it censorship resistant? If entries can be removed from search results when they go missing, haven't you just created a shared database where objectionable content can be removed from search for everyone at once?
That seems strictly worse than Peertube. At least on Peertube if you want to remove a video you'll need to target all of the instances that are mirroring it; you can't just attack one ledger that everyone is forced to use.