Patent attributes
A cryptographic scheme associated with a transaction service is received at a first computer system. Subsequent to receiving the cryptographic schema, the first computer system performs a configuration process for a transaction to be performed with the transaction service. The configuration process includes receiving a request for transaction configuration information from a client device. The request includes a cryptographic token generated by a second computer system the transaction service. The first computer system determines whether to grant the request based on analyzing the cryptographic token according to the cryptographic schema. Based on the determining, the first computer system sends transaction configuration information. The configuration process is performed by first computer system independent of communication between the second computer system and the first computer system.