Yes. It's a good idea. For our image scoring service, we're actually storing the hashes of the URLs instead of the URLs. And I thought, what if we could PUBLISH the hashes of the URLs instead of the URLs themselves... But the problem is that hashing a URL takes less than a millsecond, so it would be trivial to "construct a porn map of nostr" if we provided the hashes, right?
Discussion
Well. hashes are one way. do given a hash, you couldn't find the original. but given the original and a hash, you could know* that that hash is of that original.
* There are technically multiple originals that would produce the same hash, but it's pretty unlikely in the real world, at least as far as I understand. But I am not a cryptologist.
so, not do.