Defed is a super account system with the following features: decentralized, community-governed, smart contract-based, no threshold, and support for any group, anywhere, at any time, worldwide, truly free account opening, free account access, high efficiency, and low fees. Defed accounts have all the functions of deposit, loan and payment that an account should have. Users can deposit assets into their Defed account and earn interest, or they can use their account balance as collateral in real time to obtain a line of credit, which can be used for any scenario, just like the original Coin/Token assets.