Distributed Custody With No Single Point of Failure

A cross-chain trading protocol needed a threshold signature system for vault custody where no single party could unilaterally sign transactions. Traditional multi-sig schemes were chain-specific and limited scalability.

We designed and built a DKLS23-based threshold signing system with 4-round distributed key generation and 3-round cooperative signing, producing standard ECDSA signatures compatible with any secp256k1 blockchain. The architecture used intentional friction — manual, synchronous ceremonies over video calls — as a security feature for high-value operations.

No single validator or minority coalition can move funds. Chain-agnostic custody across Bitcoin, Ethereum, and all EVM-compatible networks. Foundation established for configurable thresholds and key share refresh.