Mastercard Incorporated
Method and system for implementing chargebacks on a distributed ledger system

Abstract:

A method for recording chargebacks in blockchain transactions includes: storing a blockchain comprised of a plurality of blocks, each block being comprised of a block header and data values, where each data value includes a unique transaction identifier and data corresponding to a processed payment transaction; receiving a chargeback request including a specific transaction identifier corresponding to a unique transaction identifier included in a data value in the blockchain; generating a first transaction data value comprising the specific transaction identifier, a first new unique transaction identifier, and data indicating that a chargeback is requested for the corresponding payment transaction; transmitting the first transaction data value to a blockchain node; generating a second transaction data value comprising the specific transaction identifier, a second new unique transaction identifier, and data indicating a resolution for the chargeback for the corresponding payment transaction; and transmitting the second transaction data value to a blockchain node.