AMERICAN EXPRESS TRAVEL RELATED SERVICES COMPANY, INC. (New York, NY)

The disclosure reveals a balancing and controlling (B&C) system to manage API transactions. In response to an API request sent from a consumer to a provider system, the system can write a request acknowledgment and an acknowledgement of the request to a blockchain. Every request acknowledgement and request confirmation contains a hash of the API request. The system can also write a response confirmation and acknowledgment of response to the blockchain in response to an API response that is transmitted from the provider system to the consumer system, with the response acknowledgment and the response acknowledgement each having a hash of the API response. The blockchain could create a smart contract to compare the request hashes of the request confirmation acknowledgement of request, as well as the responses hashes from the confirmation and acknowledgement to determine one or more out-of-balance events.

Policies on data transfer (e.g., messaging transfer, API requests and API responses) often consist of an audit of prior data transfers to determine that the transfers were correct. For instance, auditors can check past data transfers to verifythat credit applications previously sent to financial institutions were accurate. Balancing and Control (B&C) is the procedure used to make sure that data transfers between systems are precise, complete and timely. B&C processes may be implemented to guarantee the accuracy, completeness , and speed of data transfers between systems. Data transfers that are monitored with B&C monitoring process implemented typically involves an sending system and a receiving system in direct communication with a third partyintermediary. The sending system transfers the information to the receiver system, and the sending system and receiving system send a trigger containing B&C information to the third party, which the third party uses this information to verify the validity of data transfers.

It can be difficult to include a third party in every data transfer. It could be difficult to include a third-party in each data transfer. Third-party systems, for example, may not be compatible with API transmissions, and they may not provide B&C or B&C monitoring. The third-party systems create a second problem for the B&C systems. Although the third party could be the central authority for B&C but it will not be secure with regard to the B&C information the third party gets.

The method, the system as well as a computer-readable medium are disclosed to control and balance the distributed database (e.g., ). The system is able to send an API request confirmation to an API request confirmation as a response to a service consumer system that sends an API request to a provider system. In this case the confirmation will include a transaction ID and address of the system that is used by the service provider. It also contains the requesthash of the API request. In response to receiving an API request from a service consumer system, it could send to the the service provider system an acknowledgement of the API request. The API acknowledgement of request contains the transaction ID and the service provider system address as well as the service provider address, and the second request hash for the API request. After receiving the API request the system will send an API response confirmation to the service provider system. The API response confirmation includes the transaction ID, the service provider’s address, the service consumer’s address for the system, as well as the first response hash. The system may send to the blockchain an acknowledgement of API response to the service consumption system that receives the API response from the service provider system. The API response acknowledgement comprises the transactionID, the service provider address for the system as well as the service provider system address, and a second response hash for the API request. The blockchain runs a smart contract to compare the first request hash from the API request to the second request hash of theAPI request to detect an out-of-balance request and also compare the initial response hash of the API response to the second hash of the API response to determine the out-of-balance reaction. The system can read from the blockchain, through a monitoring device at least one of the request out-of-balance event or the event that results from an out-of-balance response.

The system can generate an out of balance alert depending on whether it’s received at least one out-of-balance request or. The consumer system address could contain a first key that corresponds to the first private key of the first asymmetric cryptography key pair, while the provider system address could include a second key that is a second private key of the second asymmetric cryptography pair. The system can further register on the blockchain the service consumer system by assigning the system that is used for service consumption the public key that is first and the first private key of the first asymmetric cryptography key pair. The system can also sign up on the blockchain the service provider system by assigning to the system of the service provider the second public key as well as the second private key from the second key asymmetric cryptography pair.

In various embodiments the request confirmation might include a first timestamp and the request acknowledgement has two timestamps and the response confirmation includes the third timestamp and the response acknowledgement includes a fourthtimestamp. The system can detect an out-of-balance request timeout event when the second time stamp of the request acknowledgement , not being within a predetermined time interval relative to the initial timestamp of the confirmation. The system may detect a timeout out of balance event in response to the fourth timestamp of the response acknowledgment, not being within the predetermined time window with respect to the third timestamp of the confirmation.

The above features and elements may be combined in various combinations without exclusivity unless explicitly stated or otherwise. The following description and accompanying illustrations will allow you to understand these features and elements, as well as the way they function.

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