Patent ID: 11935042
Assignee: NEC CORPORATION
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 7:
8. A system for securing an interblockchain transaction involving an exchange of at least partial ownership in a collectable, the interblockchain transaction involving a first transfer on a permissioned blockchain and a second transfer on a permissionless public blockchain, the system comprising:
processor circuitry configured to:
register the collectable on the permissioned blockchain by:
receiving a unique digital fingerprint of the collectable, and
generating a unique digital ID that uniquely identifies the collectable on the permissioned blockchain, pairing the digital fingerprint with the digital ID, and storing the paired digital fingerprint and digital ID on the permissioned blockchain;

validate the collectable on the permissioned blockchain by:
receiving a certificate of authenticity digitally signed with a commitment of an appraiser, and
pairing the certificate of authenticity with the digital ID;

tokenize the validated collectable by generating a plurality of tokens, each token representing a fractional ownership share of the validated collectable; and
securely process an exchange, of one or more of the plurality of tokens for a native cryptocurrency of the permissionless public blockchain, by:
receiving, from a first user application, a registration request including a first permissioned blockchain public key and a first permissionless blockchain public key, the first permissioned blockchain public key being valid on the permissioned blockchain and the first permissionless blockchain public key being valid on the permissionless public blockchain,
receiving, from the first user application, a transaction identification, the transaction identification identifying a transfer of the native cryptocurrency of the permissionless public blockchain executed on the permissionless public blockchain, the transaction identification identifying the first permissionless blockchain public key and a second permissionless blockchain public key,
verifying, using the transaction identification, completion of the transfer of the native cryptocurrency transaction, and
in response to verifying the completion of the transfer of the native cryptocurrency, automatically transferring, from an account associated with a second permissioned blockchain public key that corresponds to the second permissionless blockchain public key, the one or more of the plurality of tokens to an account associated with the first permissioned blockchain public key.