Sumer.money is a cross-chain synthetic asset money market protocol that enables composable DeFi across blockchains. Users can use their assets on any chain without the need to bridge native assets. The protocol offers decentralized asset routing, threshold signature based cryptography, low transfer fees, non-custodial wallets, blackswan insurance, and fast inter-blockchain settlement. Users can deposit supported assets, mint cross-chain fungible synthetic assets, and trade, borrow, collaterize, farm, or spend synthetic assets across multiple chains.