The invention relates to a method for verifying a value stream along a transport route (TS), in particular along a pipeline or a production line, wherein a plurality of field devices (F), each having at least one sensor (S) and/or actuator for determining and/or monitoring at least one process variable and an electronic unit (EE), are arranged along the transport route (TS) and generate corresponding data (DAT), or for verifying the value stream of at least one product in warehouse stock, wherein a first service platform (SP1) is used, via which a plurality of participant nodes (TK) each with at least one database (DB) have a communication connection to one another according to a distributed ledger or the blockchain technology.
