Method for providing information to determine a graph associated with a data item

In one embodiment, it is proposed a method for providing information to determine a graph associated with a data item, said graph being representative of a history of said data item in a network, and said graph comprising a set of vertices and a set of edges, each vertex being associated with an electronic device (101) of said network, and each edge linked at least two vertices being representative of a dataflow between said at least two vertices. The method is executed by an electronic device (101) and is remarkable in that it comprises: - verifying if an hash information derived from an obtained data item is comprised in a list of tracked data item (307) comprising a list of hashes, each hash being a hash of a first information related to a data item; - in the case that said hash information derived from said obtained data item is comprised in said list of tracked data item (307), transmitting in said network said information to determine a graph comprising a hash of a second information related to said obtained data item, when said obtained data item is obtained by said electronic device (101), and/or transmitted to another electronic device (203) in said network and/or a derived data item from said obtained data item is generated.