Core engineering and protocols for Threshold ML-DSA Quorums.
Corporate governance requires that no single executive, administrator, or engineer possesses unilateral authority to move corporate treasury funds. In classical systems, multi-signature smart contracts or threshold ECDSA were used. PQCCustody pioneers Threshold ML-DSA (t-of-n), extending NIST FIPS 204 to distributed multi-party computation.
Each authorized custodian holds an encrypted smart card containing a mathematical share of the master lattice polynomial vector. When a large withdrawal is authorized, custodians enter their PINs into separate air-gapped terminals. The terminals execute a round of zero-knowledge communication, outputting a single standard ML-DSA signature verifiable by any blockchain node.