PAXG is a digital asset that represents physical gold stored in a vault, each token representing one troy ounce of a 400 oz London Good Delivery gold bar. It is built on the Ethereum blockchain and issued by Paxos Trust Company, a regulated financial institution and custodian of the physical gold. PAXG is primarily used as a way for investors to invest in and hold gold in a digital form, and it can be traded on various exchanges. It can also be used as collateral for loans and other financial services within the cryptocurrency and blockchain ecosystem, and Paxos Trust Company has developed institutional-grade APIs and solutions for businesses and developers who want to use PAXG and other Paxos assets in their applications.