DIAMOND CUSTODY SYSTEM WITH BLOCKCHAIN NON-FUNGIBLE TOKENS (NFTS)

摘要

A non-fungible blockchain token (NFT) transferable from wallet to wallet on a blockchain represents ownership of a physical diamond custodied in a secure vault. The NFT can be sold and resold to investors wishing to use the diamond as a store of value. The NFT owner, who may only be known by a blockchain wallet address, can communicate with the custodian, the issuer, auditors, and more by writing signal messages into the blockchain NFT. A diamond custody controller unit at the custodian includes a trusted program module to handle private cryptographic key functions and to output retrieval and shipping instructions when a signal message indicates the NFT owner instructs the custodian to move the diamond to a new custodian. The NFT owner can also write signal messages into the NFT to instruct other parties, such as auditors, to perform services relating to the diamond.