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Quantum-ready multisig without a new operating model

Why Quorum treats post-quantum signing as a governance upgrade path, not a separate wallet category.

Quantum-ready multisig without a new operating model research title card

Most teams do not need a new treasury workflow. They need today's multisig workflow to survive tomorrow's signing assumptions.

Post-quantum migration should feel like a governed rotation, not a vault migration.

Quorum

The practical migration problem

Classical signatures are simple to operate, widely supported, and deeply integrated into Solana wallets. Replacing them all at once creates operational risk, even when the cryptographic reason is strong.

Quorum keeps the wallet model familiar: propose, approve, execute. The change is that members can use Ed25519, Secp256k1, Falcon-512, or Winternitz identities under one approval policy.

Signing schemes
4
Vault address
Stable
PQ quorum
pq_threshold

Why this matters

The dangerous migration is the one that asks teams to choose between usability and resilience. Quorum's approach lets teams raise the post-quantum requirement over time while preserving treasury history, vault addresses, and ordinary approval review.