A central system includes processor(s) and a memory storing instructions. The instructions, when executed by the processor(s), cause the central system to: store blockchain wallet addresses for blockchain wallets; store a verification status of each blockchain wallet, where each verification status indicates whether the owner identity of the respective blockchain wallet has been verified; and provide access management for client systems. The access management includes, for each client system: associating a subset of the blockchain wallets with the client system, where the subset contains blockchain wallets that are enrolled with the client system, and storing an access permission for each enrolled blockchain wallet for the client system. The central system, in response to a request from a particular client system regarding a particular blockchain wallet, communicates, to the particular client system, the access permission for the particular blockchain wallet for the particular client system.