Abstract: Systems and methods for linking a plurality of data records to a tokenized identifier such that each data record is accessible via the tokenized identifier are disclosed. A first data record associated with a first account and a second data record associated with a second account may be loaded into a digital wallet. Next, a token primary account number (PAN) may be generated and linked to the first account and the second account. Available prepaid funds associated with the first account may be verified and displayed on a user interface. In response to an initiation of a transaction, an optimal payment structure based on the available funds of the first account may be determined. In response to authorization of the transaction from the issuing banks associated with the first account and the second account, an authorization message may be sent to a bank associated with the token PAN.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method and system for managing payment card transaction instructions at a point of interaction (POI) device. The method includes storing one or more payment card transaction instructions received from an entity responsible for a plurality of payment cards usable with the POI device wherein the payment card transaction instructions are associated with at least one of a brand and a product of the entity. The method further includes receiving, from a merchant, a payment card identifier before or during a payment card transaction, the payment card identifier including a plurality of fields. The method also includes communicating to the central store at least a portion of one or more of the plurality of fields and transmitting the one or more payment card transaction instructions to the POI device, from the central store, that correspond to the one or more payment card transaction instructions associated with the payment card identifier.

Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.

Abstract: A method and system for managing payment card transaction instructions at a point of interaction (POI) device. The method includes storing one or more payment card transaction instructions received from an entity responsible for a plurality of payment cards usable with the POI device wherein the payment card transaction instructions are associated with at least one of a brand and a product of the entity. The method further includes receiving, from a merchant, a payment card identifier before or during a payment card transaction, the payment card identifier including a plurality of fields. The method also includes communicating to the central store at least a portion of one or more of the plurality of fields and transmitting the one or more payment card transaction instructions to the POI device, from the central store, that correspond to the one or more payment card transaction instructions associated with the payment card identifier.