Example embodiments relate to methods, systems and apparatuses t for action surveillance for multiple players. A first function, such as an SCF, receives a first request for an initialization for uploading action logs to a blockchain. The first function (such as an SCF) determines parameters for uploading action logs to the blockchain, and thus the parameters can be used by the XaaS entity for uploading the action logs. The parameters include a first set of interval parameters and a second set of grouping parameters, this allows for the uploading of action logs to be done accordingly, avoiding individual uploads for each action log and reducing overhead.