It is provided a multi-access edge computing node located within a cellular coverage area supported by a base station of a mobile network operator, the multi-access edge computing node comprising at least one memory to store a chained data block, where each data block is coded with data of a past transaction in respect of a good or service; and at least one stock processor configured with functions that: include a new data block, to record a current transaction in respect of a good or service, into the chained data block in response to a signature, generated from processing the data of the current transaction with the coded data of the past transactions stored in the chained data block, being validated by a group of external multi-access edge computing nodes, wherein the multi-access edge computing node and the group of external multi-access edge computing nodes are trusted, and communicate over a common channel.