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NFTs struggle to authenticate even themselves. NFT is just a JSON with a URL, and if the URL isn't guaranteeing immutability, then NFT isn't either.
by pornel 5y ago
NFTs struggle to authenticate even themselves.
NFT is just a JSON with a URL, and if the URL isn't guaranteeing immutability, then NFT isn't either.
- serverholic 5y agoThis is why many NFT websites back the NFTs with IPFS.
- pornel 5y agoand then you can skip the whole blockchain and use IPFS directly. NFTs do absolutely nothing for this use-case. They're merely a security hole that is plugged by something else off-chain. In reality, an implementation that authenticates footage would use classic public-key cryptography with a private key embedded in a HSM in the camera, signing the output. You can't make it trustless with blockchain software, because necessarily the chain of trust has to end on the hardware (the hardware can be verified in theory, but blockchain is irrelevant for this, sinec there's no double-spend protection needed in this security model).
- kmmlng 5y agoYes, to make this clear: the actual image (or whatever other type of media) is not stored on chain, only a link to the image.