Abstract: A decentralized distributed ledger-type database comprises a plurality of subscriber nodes, comprising validation-capable subscriber nodes, and an automation field device with an electronic unit (running a distributed ledger software stack). The field device generates measurement values and/or calibration certificates requiring verification. The field device operates as a light node of the decentralized database after running the distributed ledger software stack and transmits data to the decentralized database via the communication network and writes it in encrypted form into the database. The validation-capable subscriber nodes validate the transmitted data, and the decentralized database stores the data if at least a specified proportion of the validation-capable subscriber nodes successfully validate the data. Read-authorized subscriber nodes decrypt and read the stored data in the decentralized database, with the database storing and running smart contracts.

Abstract: A system for managing data of an automation field device in a secure manner includes a decentralized distributed ledger-type database, or blockchain, comprising a plurality of subscriber nodes, comprising validation-capable subscriber nodes and an automation field device with an electronic unit. The electronic unit is designed to run a distributed ledger software stack. The field device generates data, comprising measurement values and/or calibration certificates requiring verification, and the field device operates as a light node of the decentralized database after running the distributed ledger software stack and is designed to transmit the data to the decentralized database via the communication network and write said data in encrypted form into the decentralized database.

Abstract: A strip-shaped sandwich composite material for producing probe needles, wherein an inner core layer is arranged between two outer cover layers, wherein the inner core layer consists of a palladium alloy comprising at least 30 wt. % palladium or of a platinum alloy comprising at least 30 wt. % platinum, and wherein the two outer cover layers consist of a precipitation-hardened and/or dispersion-hardened copper alloy comprising at least 90 wt. % copper and/or silver alloy comprising at least 70 wt. % silver. The invention also relates to a probe needle, a bonding strip, a probe needle array and a method for producing a composite material.