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That sounds like a solution to me, it satisfies whatever the need is for human involvement while enabling the user to redact the weaponizable elements of the picture.

That's an interesting idea, but might break whatever hashing method is used?

The idea is to hash the original image, but to send the obscured one for human verification. However this requires a different hashing method (such a Merkle tree) to know the unobscured parts match.

Seems like anybody can upload any body.