International Business Machines Corporation

Ruslan Ardashev

Nitin Gaur

Gautham Pamu

Sloane Brakeville

An example operation may include one or more of connecting, by an identity protection node, to a blockchain network comprised of a plurality of user nodes, assigning, by the identity protection node, two sets of credentials to users of the plurality of the user nodes, monitoring, by the identity protection node, transactions initiated by the plurality of the user nodes, in response to a detection of an unauthorized transaction initiated by a user node of the plurality of the user nodes, invoking, by the identity protection node, the second set of the credentials of a user associated with the unauthorized transaction, and executing, by the identity protection node, a smart contract to apply the second set of the credentials against the first set of the credentials.

Identity protection

A blockchain of transactions may be referenced for various purposes and may be later accessed by interested parties for ledger verification. One example operation may comprise one or more of creating an initial identifier representing an asset and an owner entity of the asset in a blockchain, identifying an identity block associated with the initial identifier, and identifying an asset transfer of the asset from the owner entity to a blockchain entity.

Concomitance of an asset and identity block of a blockchain

An embodiment of the invention may include a method, computer program product and system for consensus optimization. The embodiment may include implementing a hierarchy of computing nodes. The hierarchy includes a plurality of levels. An nth level includes a plurality of subgroups of computing nodes. Each subgroup contains a leader computing node. An n+1 level includes all of the leader computing nodes of the nth level. The embodiment may include transmitting messages from a first computing node to a second computing node. The second computing node is within a same subgroup of the first computing node. The embodiment may include transmitting messages from the first computing node to a third computing node. The third computing node is a leader computing node from a different subgroup of the first computing node. The embodiment may include determining a consensus. The consensus is determined by computing nodes located at a highest level.

Hierarchical blockchain consensus optimization scheme

A blockchain function may include one or more of identifying a plurality of new transactions to be committed to a blockchain, determining whether any of the plurality of new transactions comprises a data dependency with any other of the plurality of new transactions, and transmitting a plurality of messages providing validation of the plurality of the new transactions, responsive to the determining.

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Rocky Point, NY, United States of America

Ruslan Ardashev