Abstract: When a user of an interface system defines a workflow, the interface system transmits a notification to a user that is to perform the first step of the workflow. When the user requests to initiate the step of the workflow, the interface system creates a transaction for the workflow step. The user signs the transaction using a cryptographic key pair. The interface system receives the signed transaction and verifies the signature. Once the signature is verified, the step can be performed. The interface system forwards the transaction to a data storage system for storing. For performing the next step in the workflow, the data storage system identifies the user that is to perform the next workflow step. The data storage system creates a notification that identifies the user and the notification is provided to the user. The process repeats until each step of the workflow is performed.

Abstract: A data integrity system generates a transaction signature associated with a transaction based on transaction data received from a data producer. The transaction signature is unique to the transaction and is generated by applying a hash function to the transaction data. When the transaction data is to be transmitted to a data consumer, the data integrity system redacts the transaction data based on permission information associated with the data consumer and transmits the redacted transaction data to the data consumer. To enable the data consumer to verify the integrity of the received data, the data integrity system also transmits a cryptographic assurance that includes at least the transaction signature associated with the transaction. The data consumer verifies the integrity of the received data by independently generating a transaction signature based on the redacted transaction data and matching the independently generated signature with the transaction signature in the cryptographic assurance.

Abstract: When a user of an interface system defines a workflow, the interface system transmits a notification to a user that is to perform the first step of the workflow. When the user requests to initiate the step of the workflow, the interface system creates a transaction for the workflow step. The user signs the transaction using a cryptographic key pair. The interface system receives the signed transaction and verifies the signature. Once the signature is verified, the step can be performed. The interface system forwards the transaction to a data storage system for storing. For performing the next step in the workflow, the data storage system identifies the user that is to perform the next workflow step. The data storage system creates a notification that identifies the user and the notification is provided to the user. The process repeats until each step of the workflow is performed.

Abstract: A data integrity system generates a transaction signature associated with a transaction based on transaction data received from a data producer. The transaction signature is unique to the transaction and is generated by applying a hash function to the transaction data. When the transaction data is to be transmitted to a data consumer, the data integrity system redacts the transaction data based on permission information associated with the data consumer and transmits the redacted transaction data to the data consumer. To enable the data consumer to verify the integrity of the received data, the data integrity system also transmits a cryptographic assurance that includes at least the transaction signature associated with the transaction. The data consumer verifies the integrity of the received data by independently generating a transaction signature based on the redacted transaction data and matching the independently generated signature with the transaction signature in the cryptographic assurance.