USDh is the first Bitcoin-backed synthetic dollar, now live on Stacks, offering up to 25% APY.USDh is built into the Stacks ecosystem, allowing for easy swapping of Stacks assets for USDh.To earn up to 25% APY, users can stake their USDh on Hermetica.Staking USDh also provides access to Hermetica's points system, allowing users to earn rewards.