Arkadiko is a decentralized, non-custodial liquidity protocol where users can collateralize their assets and mint a stablecoin called $USDA. The Arkadiko protocol trustlessly provides stable loans backed by Stacks Tokens ($STX), known as $USDA. In order to mint $USDA, you need to over-collateralize Stacks ($STX) tokens into an Arkadiko Stacks Vault. In other words, $USDA is a stablecoin, existing to maintain relative price stability in volatile markets.
