Trusted aggregation with data privacy based on zero-knowledge-proofs

A method for trusted aggregation with data privacy of contributors based on a zero-knowledge-proof, the method comprising:

• committing, anonymously, an identity and performance data of a resource producer on a blockchain by an independent gateway;
• generating a Merkle tree hash commitment to the blockchain of all resources handled by an aggregator, wherein the Merkle tree hash commitment includes a first commitment of a delivery of the resource to a first user and a second commitment of the delivery of the resource to a second user;
• executing the first commitment of the delivery of the resource to the first user and the second commitment of the delivery of the resource to the second user;
• and
• providing, by the aggregator, a zero-knowledge-proof that proves that the commitment of the identity and performance data of the resource producer, and the Merkle tree hash commitment match, wherein the zero-knowledge-proof verifies that the executed first commitment and the executed second commitment are consistent with the first commitment and the second commitment in the Merkle tree, wherein the zero-knowledge-proof is recorded on a linked shared document of the blockchain as matching and approved by a virtual machine.

A computer program product for trusted aggregation with data privacy of contributors based on a zero-knowledge-proof, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform a function, the function comprising:

• committing, anonymously, an identity and performance data of a resource producer on a blockchain by an independent gateway;
• generating a Merkle tree hash commitment to the blockchain of all resources handled by an aggregator, wherein the Merkle tree hash commitment includes a first commitment of a delivery of the resource to a first user and a second commitment of the delivery of the resource to a second user;
• executing the first commitment of the delivery of the resource to the first user and the second commitment of the delivery of the resource to the second user;
• and
• providing, by the aggregator, a zero-knowledge-proof that proves that the commitment of the identity and performance data of the resource producer, and the Merkle tree hash commitment match, wherein the zero-knowledge-proof verifies that the executed first commitment and the executed second commitment are consistent with the first commitment and the second commitment in the Merkle tree, wherein the zero-knowledge-proof is recorded on a linked shared document of the blockchain as matching and approved by a virtual machine.