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>This is presented as an ownership record for the media, often with no legal basis

Ah yes, the mystical "legal basis" meaning that a nation state can use violence and kidnapping to enforce ownership in whatever way it sees fit instead of having palpable, trustless, mathematical proof of ownership.

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There is no such thing as mathematical proof of ownership, because proof of ownership isn't something that exists in the abstract.

You can have a claim of ownership that has some mathematical properties of course.

Oh, but there's. One can make a chip, that would only work when provided with a proof of ownership from some blockchain.

That's a physical thing not a mathematical proof.

The proof is mathematical, the physical thing is a validator.

Proof of ownership is meaningless without some mechanism to enforce said ownership. If I take something of yours and you can prove it's yours, so what? Without some means of enforcement, your proof has no actual effect.

You are correct. I suggest you look up the paper Stasohi Nakamoto published about a proposed solution for a mechanism of enforcement :)

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