Quantum Alliance Debuts as 6M Bitcoins Exposed

Crypto Firms Launch Quantum Alliance as 6 Million Bitcoin Sit Exposed

Nine crypto companies have formed a new group, the Quantum Alliance, to coordinate how blockchain networks should measure and improve their resistance to future quantum-computing attacks.

The Alliance is attempting to clarify a long-running and often disputed question in crypto: what it practically means for a blockchain system to be “quantum-safe,” and how projects should prove those claims with evidence rather than marketing.

The group says the issue extends beyond Bitcoin. The same cryptographic assumptions that secure Bitcoin wallets also protect stablecoin minting keys, cross-chain bridges, oracles, and governance contracts. In that environment, a single compromised privileged key could have knock-on effects across multiple platforms.

According to the Alliance’s estimate, about 6.04 million BTC—roughly 30% of Bitcoin’s supply—is “quantum-exposed at rest” because associated public keys are already revealed on-chain. A separate tally cited alongside the launch put the figure at 6.4 million BTC, or 30.2%.

The Alliance said those coins cannot be stolen this way today because no existing quantum computer is powerful enough to execute the required attack. Still, forecasts referenced around the initiative place the first practical threat in the late 2020s, with 2028 mentioned as a debated timeline.

Founding contributors span multiple parts of the crypto stack, including base-layer protocols, privacy networks, rollups, hardware wallets, and security auditing. Participants named include Quantus, Postquant Labs, Midnight Foundation, Keystone, Abelian, and security firm Hacken.

Organizers said the Quantum Alliance is modeled on the Internet Engineering Task Force (IETF), aiming to advance proposals based on public evidence and working implementations rather than company size or token holdings. The group said its outputs will be published openly.

While members agree on the need to prepare, the launch comes amid ongoing disagreement across the industry on key policy questions—particularly when quantum risk becomes urgent, and whether quantum-vulnerable BTC should ever be frozen as part of a network response.

• What happened: Nine crypto firms launched the Quantum Alliance to coordinate work on quantum security standards.
• Why it matters: The group estimates roughly 30% of BTC supply has public keys already exposed on-chain, and similar cryptography secures critical infrastructure like bridges and stablecoin minting.
• Broader context: Quantum planning remains contentious, with debate over timelines and whether vulnerable coins should be restricted, even as no current quantum hardware can execute the attack.