Abstract: A system comprising a distributed ledger (BC) configured to store a smart contract (SB) related to a problem statement (Z), the smart contract (SB) enabling a zero-knowledge proof (ZK) concerning the problem statement (Z).

Abstract: An apparatus including interface circuitry configured to read, from a sensor, event data indicating an event detected by the sensor and identification data indicating a first identifier (ID) of a user involved in the event. The first interface circuitry is further configured to generate a data stream comprising at least the event data and the identification data. Additionally, the apparatus includes processing circuitry configured to generate an updated data stream based on the data stream by updating the first ID to a second ID using a deterministic update function, and by adding noise to at least the event data. The processing circuitry is further configured to determine whether sufficient privacy budget is left for the updated data stream, and, if so, generate encrypted data by encrypting the updated data stream. The apparatus includes second interface circuitry configured to output the encrypted data for transmission to an external data aggregator.

Abstract: Examples relate to sound processing devices, to corresponding methods and computer programs for sound processing devices, and to devices, such as mobile devices or hearing aids, comprising a sound processing device. A sound processing device comprises at least one interface for communicating with one or more further sound processing devices. The sound processing device comprises processing circuitry, configured to obtain a sound processing model. The processing circuitry is configured to receive, from the one or more further sound processing devices, one or more local adjustments to the sound processing model determined by the one or more further sound processing devices based on sound recorded locally by the one or more further sound processing devices. The processing circuitry is configured to adjust the sound processing model based on the one or more local adjustments. The processing circuitry is configured to process sound recorded locally by the sound processing device using the sound processing model.

Abstract: Examples relate to a query handler apparatus, query handler method and corresponding computer program, and to a system comprising such a query handler apparatus. The query handler device comprises at least one interface configured to communicate with a requester device and with a plurality of data provider devices. The query handler device comprises processing circuitry configured to obtain a request for data from the requester device. The processing circuitry is configured to determine an access policy for the requester device. The processing circuitry is configured to forward the request with information on the access policy to the plurality of data provider devices, to instruct the plurality of data provider devices to provide the data to the requester device according to the access policy.

Abstract: The present disclosure relates to a concept for providing a score indicative of a physiological condition of at least one individual. The concept include measuring physiological or behavioral data of the individual, determining contextual data comprising a measurement context and/or socio-demographic features associated with the individual determining a metric based on the measured physiological or behavioral data, and determining the score by comparing the metric against a predicted value from a prediction model trained with the contextual data.

Abstract: A system comprising a distributed ledger (BC) configured to store a smart contract (SB) related to a problem statement (Z), the smart contract (SB) enabling a zero-knowledge proof (ZK) concerning the problem statement (Z).