Abstract: This invention involves with A method of loyalty exchange transaction by using blockchain for reward point exchange, the system has created an “open-loop and decentralized” loyalty platform using blockchain, which provides instant redemption and exchange capabilities across multiple loyalty point programs or currencies. The user only needs to log into the wallet to manage all their different accounts and would not have to remember multiple conversation rates, restrictions, and redemption rules. Also, the system allows both large and local partners to be added seamlessly to the system to create an ecosystem with LPOs, loyalty members, institutional buyers and merchants all benefiting from the technology with much lower operation costs to run, and under standardized rules which are easily understood.