Abstract: A method can include intercepting, by an interceptor positioned between a transfer system and a transfer settlement system, a transaction prior to the transaction being provided to the transfer settlement system. The method can include confirming that data from the transaction matches information in an immutable ledger to which parameters of the transaction have been provided by a notary system that confirms the parameters of the transaction and applies a signature using a private key to the transaction in response to confirming the parameters. The method can include, in response to confirming that the data matches the information, providing the transaction for settlement by the transfer settlement system.

Abstract: A transaction system can include a computing device with a communication port, a processor device, and a non-transitory computer-readable storage memory. The communication port can communicate data with other computing devices. The non-transitory computer-readable storage memory includes code that is executable by the processor device to perform operations. The operations include receiving parameters of a transfer, verifying the transfer using a multi-factor authentication process, in response to verifying the transfer, using a private key to countersign the transfer and return, via the communications port, a signed transfer package for execution of the transfer, and providing, via the communications port, the parameters of the transfer and countersign data to an immutable ledger.

Abstract: A transaction system can include a computing device with a communication port, a processor device, and a non-transitory computer-readable storage memory. The communication port can communicate data with other computing devices. The non-transitory computer-readable storage memory includes code that is executable by the processor device to perform operations. The operations include receiving parameters of a transfer, verifying the transfer using a multi-factor authentication process, in response to verifying the transfer, using a private key to countersign the transfer and return, via the communications port, a signed transfer package for execution of the transfer, and providing, via the communications port, the parameters of the transfer and countersign data to an immutable ledger.

Abstract: A transaction system can include a computing device with a communication port, a processor device, and a non-transitory computer-readable storage memory. The communication port can communicate data with other computing devices. The non-transitory computer-readable storage memory includes code that is executable by the processor device to perform operations. The operations include receiving parameters of a transfer, verifying the transfer using a multi-factor authentication process, in response to verifying the transfer, using a private key to countersign the transfer and return, via the communications port, a signed transfer package for execution of the transfer, and providing, via the communications port, the parameters of the transfer and countersign data to an immutable ledger.

Abstract: A transaction system can include a computing device with a communication port, a processor device, and a non-transitory computer-readable storage memory. The communication port can communicate data with other computing devices. The non-transitory computer-readable storage memory includes code that is executable by the processor device to perform operations. The operations include receiving parameters of a transfer, verifying the transfer using a multi-factor authentication process, in response to verifying the transfer, using a private key to countersign the transfer and return, via the communications port, a signed transfer package for execution of the transfer, and providing, via the communications port, the parameters of the transfer and countersign data to an immutable ledger.

Abstract: A transaction system can include a notary system and an interceptor for providing security in connection with processing a transaction. The notary system is configured to confirm parameters of the transaction and to apply a signature using a private key to the transaction in response to confirming the parameters. The notary system is also configured to output a signed transaction for execution, and to provide the parameters of the transaction to an immutable ledger. The interceptor can be positioned between a transfer system and a transfer settlement system. The interceptor is configured to intercept the transaction before the transfer settlement system, to confirm that data from the transaction matches information in the immutable ledger, and, in response to confirming that the data matches the information, to provide the transaction for settlement by the transfer settlement system.

Abstract: A transaction system can include a notary system and an interceptor for providing security in connection with processing a transaction. The notary system is configured to confirm parameters of the transaction and to apply a signature using a private key to the transaction in response to confirming the parameters. The notary system is also configured to output a signed transaction for execution, and to provide the parameters of the transaction to an immutable ledger. The interceptor can be positioned between a transfer system and a transfer settlement system. The interceptor is configured to intercept the transaction before the transfer settlement system, to confirm that data from the transaction matches information in the immutable ledger, and, in response to confirming that the data matches the information, to provide the transaction for settlement by the transfer settlement system.