An NFT that carries no secret.

Every SciPHR wallet mints an NFT on the XRP Ledger to anchor its identity. The NFT carries a pointer to an encrypted backup stored off-chain, and nothing that could open it.

An XRPL NFT URI is capped at 256 bytes, too small for the backup itself. So the NFT records only a reference: a content ID and a hash. The content ID is the file's own fingerprint, so changing one byte changes the ID. Before trusting a fetched backup, your device checks it against that hash.

Think of a coat-check ticket that names which sealed trunk is yours and carries its fingerprint, while opening nothing. Anyone can read the ticket. Only your device, your iCloud, or your recovery code opens the trunk.

The ledger proves which backup belongs to your identity, and storage just holds the bytes. A public anchor can settle provenance without ever holding a secret.