Smart contracts (blockchains, distributed ledgers) and rights management broadly construed are the themes of today's Spotlight Applications. The first application discloses a virtual physical digital twin ecosystem. The second application discloses blockchains with random committee selection. The third application discloses verifiable privacy preserving computation. The fourth application discloses privacy preserving auditable accounts using blockchains.
20230056673, “Virtual physical digital twin ecosystem,” assigned to IBM.
A processor may receive a geofence perimeter of a geospatial region. The processor may analyze one or more objects within the geofence perimeter. The processor may generate a digital twin ecosystem. The digital twin ecosystem may include digital copies of the one or more objects. The processor may present a simulation of the digital twin ecosystem to a user.
20230059580, “Blockchain with random committee selection,” assigned to IBM.
An example operation may include one or more of storing blockchain blocks committed to a blockchain based on a protocol executed by a current consensus committee of a blockchain network, receiving random values from the blockchain blocks which are created by nodes of the current consensus committee, randomly determining nodes of a next consensus committee of the blockchain network with respect to the current consensus committee based on the random values created by the nodes of the current consensus committee, and storing a new block to the blockchain based on a protocol based executed by the nodes of the next consensus committee.
20230056783, “Verifiable privacy preserving computation,” assigned to IBM.
Disclosed herein are methods and systems for executing verifiable computation modules to process private data at private data owner platform, comprising obtaining a computation module having a unique identifier recorded in a distributed ledger controlled by a plurality of computing nodes, generating a key pair comprising a signing key and a verification key derived from the signing key, recording, in the distributed ledger, an execution record associating an execution instance of the computation module with the verification key, initiating the execution instance of the computation module to process a private dataset incorporated with the signing key. outputting a computation outcome, computing an execution result signature for the execution instance based on the unique identifier and the private data and the signing key, and recording the execution result signature in the distributed ledger to enable verification of the execution instance.
20230057898, “Privacy preserving auditable accounts,” assigned to IBM.
An approach for privacy-preserving auditable accounts on blockchain networks. The approach may include encoding tokens associated with a blockchain network. The encoding may include data relating to the current epoch, where an epoch is a specific time range. The tokens may be received from a user for inspection by an auditing entity. The approach may include performing an audit check on the encoded tokens. If the audit check succeeds, the auditing entity may submit an audit transaction verifying the tokens were generated in the current epoch and making the tokens auditable for the next epoch.