According to CoinMeta, the founder of CoinEx and also the author of a tweet on CEO Haipo Yang stated that CoinEx's hot wallet adopts a dual-signature scheme based on MPC. The business system and the wallet system each hold one private key. All withdrawals and transfers must undergo real-time risk control audits by independent teams from both systems; even if one system is compromised, assets cannot be stolen. This scheme covers nearly 300 blockchains supported by CoinEx, and the implementation took over a year.