Post-quantum approval requirements

Quorum can evaluate the total number of approvals and the number of approvals produced by post-quantum signer schemes.

Quorum is devnet software and should not be used to protect production funds before audit and mainnet readiness.

How it works

Each member has a signer scheme. When a member votes, Quorum verifies the signature using the scheme-specific verifier and records whether the approval counts toward the post-quantum requirement.

Example 3-of-5 with one PQ approval

A policy can require three approvals total while also requiring at least one Falcon-512 or Winternitz approval. In that configuration, three Ed25519 approvals are not enough, but two Ed25519 approvals plus one Falcon approval can satisfy the policy.

Immediate readiness

Teams that want post-quantum participation from day one can add Falcon or Winternitz members during multisig creation and set a non-zero post-quantum approval requirement immediately.

Staged migration

Teams that need operational continuity can start with today's signers, add post-quantum members later, then raise the requirement after their custody process has been tested.