iirc many NFT systems use IPFS [1], where content addresses and content hashes are the same. Of course, it still requires someone to actually store the underlying file.<p>A good lesson in buyer beware - many NFTs are being made (and sold) by people who don't know what they're doing.<p>Another quote from Moxie RE IPFS [2]:
> another strange phenomenon is that NFTs which host metadata on IPFS often don't use ipfs:// urls, but rather an explicit https IPFS gateway, which isn't fundamentally that different from some random webserver in terms of what clients are capable of enforcing.<p>[1] <a href="https://ipfs.io/" rel="nofollow">https://ipfs.io/</a><p>[2] <a href="https://twitter.com/moxie/status/1448162369553637376?s=20" rel="nofollow">https://twitter.com/moxie/status/1448162369553637376?s=20</a>