USDT0 Discloses Security Architecture with 3/3 Validation and $6M Bug Bounty

ChainCatcher reports that, following the Kelp security incident, Tether’s asset interoperability protocol, USDT0, has disclosed details of its security architecture. It states that the current system employs a proprietary DVN (Decentralized Verification Network) with message veto power and requires three independent validators, each operating on distinct codebases, to reach a 3/3 consensus before cross-chain messages can be settled. Current verification nodes include the USDT0 proprietary DVN, LayerZero, and Canary, with future plans to expand to 4/4 and 5/5 validation mechanisms. USDT0 also notes that all multisig transactions undergo multiple layers of review by internal teams, external security teams, and audit firms before signatures are submitted. The relevant contracts have been audited by institutions such as Guardian and OpenZeppelin and are covered by a $6 million bug bounty program on Immunefi.