Computer-Implemented Method And System Of Tamper-Evident Recording Of A Plurality Of Service Data Items

A computer-implemented method of tamper-evident recording of service data, wherein at least

• a plurality of service data items are received;
• for each service data item, an associated data item verification fingerprint is computed using a fingerprint function;
• an aggregated verification fingerprint is computed from at least the associated verification data item fingerprints using a one-way compression function, so that the aggregated verification fingerprint has a bit length, which is less than a bit length of a concatenation of the data item verification fingerprints;
• and wherein
• the aggregated verification fingerprint is stored in at least one blockchain for decoupling of the storage of the aggregated verification fingerprint from the service data.

A system of tamper-evident recording of service data, comprising at least a processing device, the processing device comprising:

• a network interface, configured to connect to a communication network for sending and receiving data;
• a service module, connected with the network interface and configured to receive at least one of the group of:
• a plurality of service data items, and a plurality of data item verification fingerprints;
• a compression module, configured to compute an aggregated verification fingerprint from at least the plurality of data item verification fingerprints using at least one one-way compression function, so that the aggregated verification fingerprint has a bit length, which is less than a bit length of a concatenation of the data item verification fingerprints;
• and
• a blockchain connector module, connected with the compression module and the network interface and configured to connect with at least one blockchain and to transmit the aggregated verification fingerprint to the at least one blockchain to allow storing the aggregated verification fingerprint in the at least one blockchain decoupled from the service data.

A system of tamper-evident recording of service data, comprising at least a processing device, the processing device comprising:

• a network interface, configured to connect to a communication network for sending and receiving data;
• a service module, connected with the network interface and configured to receive a plurality of service data items and for each service data item, to compute an associated data item verification fingerprint using a fingerprint function;
• a compression module, configured to compute an aggregated verification fingerprint from at least a plurality of data item verification fingerprints using at least one one-way compression function, so that the aggregated verification fingerprint has a bit length, which is less than a bit length of a concatenation of the data item verification fingerprints;
• and
• a blockchain connector module, connected with the compression module and the network interface and configured to connect with at least one blockchain and to transmit the aggregated verification fingerprint to the at least one blockchain to allow storing the aggregated verification fingerprint in the at least one blockchain decoupled from the service data items.