Overview
- Nine blockchain firms launched the Quantum Alliance to create open, interoperable standards and tests organized into four tracks covering migration, post‑quantum zero‑knowledge proofs, wallet security, and cross‑chain compatibility.
- The alliance publicized an estimate that roughly 6.0–6.4 million bitcoin have exposed public keys and are therefore potentially vulnerable to future quantum attacks on elliptic‑curve signatures.
- Recent cryptanalytic research has lowered the estimated quantum resources needed to attack classical signatures and some experts project a practical threat could arrive as soon as 2028–2029, though timing remains disputed.
- Industry participants are debating governance options for exposed coins — proposals to freeze, move, or place assets in trusts raise legal and property‑right concerns and would require broad coordination across wallets, exchanges and protocol developers.
- The alliance plans to publish test suites and migration guidance for wallets, custodians and networks, a move regulators in Europe have urged as part of near‑term migration planning and that could affect signature sizes, fees and zero‑knowledge proof designs.