Blockchain and Photography: Proof of Existence Is Not Proof of Ownership

What these services offer is the second largest application of the blockchain after Bitcoin: Proof of Existence.

There is a dangerous movement afoot; the idea that registration of your images on the blockchain is a cheap and simple alternative to registration with the United States Copyright Office. It is not. Those providing copyright registration services based solely on the blockchain will argue that inscribing a hash of your image along with its accompanying metadata creates an immutable record of your copyright ownership. False. What these services offer is the second largest application of the blockchain after Bitcoin: Proof of Existence.

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