Abstract: An approach is provided for a consent management using a cryptographic ledger (e.g., a blockchain). The approach, for example, involves providing a cryptographic ledger. The cryptographic ledger includes one or more data records that store metadata indicating a consent request from a data consumer to provide an access to data owned by a data subject, a consent response from the data subject to the consent request, or a combination thereof. The approach also comprises providing a neutral server to read the data from a database of a data provider on behalf of the data consumer based on the cryptographic ledger.