Patent ID: 11921705
Assignee: EYGS LLP
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. A non-transitory, processor-readable storage medium storing instructions for information storage and retrieval using an off-chain database and a distributed ledger to cause a processor to:
cause storage, in the distributed ledger, of a first hash value representing a first off-chain storage location of an off-chain database in which a root node of a first hierarchical hash-linked tree data structure is stored, the first hash value associated with a state of a smart contract that includes a second hash value of the root node of the first hierarchical hash-linked tree data structure, the state of the smart contract representing a snapshot of data stored in the first smart contract, the first hierarchical hash-linked tree data structure representing tangible asset data for a first tangible asset, the off-chain database not including a copy of any block within the distributed ledger;
store, in the off-chain database and at a second off-chain storage location, a second hierarchical hash-linked tree data structure representing tangible asset data for a second tangible asset; and
store, in the off-chain database, a third hierarchical hash-linkedtree data structure representing tangible asset data of a third tangible asset, in response to a combining of the first tangible asset and the second tangible asset to produce the third tangible asset.