Blockchain-based hierarchical data storage
US11036720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Feb 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and apparatuses are disclosed for blockchain-based hierarchical data storage. One method includes determining, based on a blockchain stored in a database that includes multiple levels of storage, a block number interval that includes one or more block numbers associated with data nodes included in a state Merkle tree stored in a target data storage and to be migrated to a lower level of storage with lower storage cost in response to the data nodes meeting a data migration condition, each of the data nodes is associated with a block number of a block of the blockchain where the corresponding data node is last updated, and the data nodes in the state Merkle tree are in the form of key-value pairs (KVPs), each key of the KVPs comprises a node identifier (ID) and a block number associated with the corresponding data node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.