I once fell for this talk about content-addressing. It sounds very nice. You know a certain file exists, you know there are probably people who have it, but you don’t know where or if it is hosted on a domain somewhere. With content-addressing you can just say start and the download will start. You don’t have to care.
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Well, so far, DHT doesn’t seem to be avoidable on p2p (distributed) mechanisms… At any rate, there’s gnunet, which also depends on DHT, but it’s not developed by “Ethereum enthusiasts”.