Digital Currency Group(DCG) failed to pay $630M to Gemini, the CEO considering Lawsuits over a $900M loan due to DCG bankruptcy and repayment disputes. SEC accuses DCG-owned firms of selling unregistered securities through the Earn Program. Gemini negotiates with DCG but has a backup plan with zero agreement. Mangrove provides a Blockchain-based IOU limit order for traders to propose sales without tying up funds, generating passive yield through collateral. The engine offers liquidity with penalties for unfulfilled obligations and Danos plans to sell with savings.