Nine Blockchain Firms Form Quantum Alliance to Set Post-Quantum Standards as 6.4M Bitcoin Sit Exposed

Published October 17, 2026, 12:37 PKT. Based on the Quantum Alliance's October 16, 2026 launch release via GlobeNewswire (primary source), and secondary reporting by CoinDesk, Crypto Briefing, Bitcoin.com News (via KuCoin), ProCoinNews, CryptoNews.net, The Quantum Insider and Gnosis News.

CEOs, CTOs and founders from nine blockchain organizations launched the Quantum Alliance on October 15, 2026 in Lisbon, Portugal, an open standards body that will define what "post-quantum readiness" means for blockchain networks, wallets and infrastructure, and create compatibility standards for the migration ahead. According to the release, nearly every major blockchain still secures accounts with elliptic-curve signatures that a sufficiently capable quantum computer could break, and the alliance counts 6.04 million bitcoin, or 30.2% of the supply, as already quantum-exposed at rest.

The October 15 Lisbon launch

The release, issued October 16, 2026 via GlobeNewswire, names the nine founding contributors as Quantus, American Fortress, Intmax, Keystone, the Midnight Foundation, Postquant Labs, Abelian, The Vault and Hacken. Postquant Labs lists two co-founders, Colton Dillion and Dr. Richard T. Carback III, the pair behind the alliance's Quantum Doom Clock model, Gnosis News reported.

Christopher Smith, founder and CEO of Quantus, set out the ambition in the release. "In the future, 'post-quantum cryptography' will just be called 'cryptography' and everything else will be in a museum," Smith said. The group does not intend to create another blockchain; instead it aims to establish publicly available standards for judging whether existing networks are prepared for quantum attacks, CryptoNews.net reported.

The 6.04 million bitcoin problem

The exposure comes down to how blockchains protect ownership. Once an account signs a transaction, and for some address types from the moment the address is created, its public key sits permanently on a public ledger. A sufficiently capable quantum computer running Shor's algorithm, a method that works backward from a public key to recover the private key, could then take control of the funds, the release said. It puts almost all of the roughly $2.9 trillion crypto market on those classical signatures, with 6.04 million BTC counted as exposed.

CoinDesk's October 16 report on the same effort put the figure at 6.4 million bitcoin at the same 30.2% share of supply, including 1.1 million coins attributed to early holdings associated with Satoshi Nakamoto, Gnosis News noted, adding that neither the 6.4 million figure nor Satoshi appears in the release itself. Crypto Briefing had written on October 15 of about 6 million bitcoin and more than 30% of supply, close to the release's 6.04 million.

The exposure reaches beyond dormant bitcoin. The same signatures protect stablecoin minting keys, governance contracts, bridges and oracle feeds, so one compromised privileged key could spread damage across many platforms at once, the release said.

The Quantum Doom Clock points to March 2028

A growing body of forecasts places the first practical attack around 2028, and several of the most closely watched appeared within the past two years, the release said. Since early 2025, the Quantum Doom Clock, a model built by alliance contributors Carback and Dillion, has pointed to March 2028 as an early window for a cryptographically relevant quantum computer. KuCoin's flash report, citing Bitcoin.com News, added that the clock sets its threshold at roughly 856,000 physical qubits. COINOTAG reported that Post-Quantum Labs CTO Richard Carback named 2028 a realistic window for the risk. The release, and every outlet covering it, carried the same caveat: no quantum computer operating today can break these keys.

Open standards, modeled on the IETF

The alliance is modeled on the Internet Engineering Task Force, where technical proposals are developed openly rather than dictated by a single company, CryptoNews.net reported. Its initial work covers four areas: blockchain migration, post-quantum zero-knowledge systems, wallet security and cross-chain compatibility, The Quantum Insider reported. It plans to publish open testing criteria, benchmarks and migration guidance covering transaction signatures, key management, consensus, zero-knowledge proofs and peer-to-peer connections.

One of the hardest problems may be bitcoin that nobody can move: funds held in forgotten wallets, lost accounts, or addresses whose owners never upgrade. Nobody can order every bitcoin holder to move their coins, CryptoNews.net noted, and the same inertia applies to stablecoin systems, bridges and other infrastructure built on the same cryptography.

Bitcoin, Ethereum, and the bunker mode call

The alliance frames the task at network level: Bitcoin needs a defined migration path, and Ethereum needs one for a much larger surface of smart-contract assets, COINOTAG reported. Ethereum researcher Justin Drake recently called on the industry to begin calmly planning for "bunker mode," his term for a controlled mass migration of assets to fresh addresses whose public keys remain hidden behind a hash, ProCoinNews reported. Momentum behind the project comes from rapid recent progress in quantum computing, including Google's Willow breakthrough demonstrating about 40 times fewer errors, which has pushed the quantum threat back to the top of the sector's security agenda.

This article is news reporting and is not investment advice.

Sources

• Quantum Alliance launch release, GlobeNewswire, October 16, 2026, primary source: nine founding organizations launched October 15, 2026 in Lisbon; open standards mission; elliptic-curve signature exposure mechanics and Shor's algorithm; roughly $2.9 trillion crypto market on classical signatures; 6.04 million BTC (30.2% of supply) counted as quantum-exposed at rest; Quantum Doom Clock pointing to March 2028 as an early window for a cryptographically relevant quantum computer, model by Richard T. Carback III and Colton Dillion; Christopher Smith quote that post-quantum cryptography will one day just be called cryptography
• CoinDesk, October 16, 2026, secondary source: 6.4 million bitcoin estimate at the same 30.2% share of supply, including 1.1 million coins attributed to early holdings associated with Satoshi Nakamoto
• Crypto Briefing, October 15, 2026, secondary source: about 6 million bitcoin and more than 30% of supply exposed
• Bitcoin.com News, October 17, 2026 via KuCoin, secondary source: alliance established in Lisbon on October 15; Quantum Doomsday Clock threshold of roughly 856,000 physical qubits; open testing and migration guidelines modeled on IETF standards; no quantum computer currently capable of the attack
• COINOTAG, secondary source: Post-Quantum Labs CTO Richard Carback naming 2028 a realistic window for quantum risk; network-level framing for Bitcoin and Ethereum
• ProCoinNews, October 16, 2026, secondary source: Ethereum researcher Justin Drake's "bunker mode" call for a controlled migration to fresh addresses with public keys hidden behind a hash
• CryptoNews.net, secondary source: IETF-modeled open standards approach; the nine founding contributors; the problem of bitcoin in forgotten wallets and lost accounts that nobody can move
• The Quantum Insider, October 15, 2026, secondary source: the four initial work areas and planned open testing criteria, benchmarks and migration guidance across signatures, key management, consensus, zero-knowledge proofs and peer-to-peer connections
• Gnosis News, October 2026, secondary source: comparison of the release's 6.04 million figure with CoinDesk's 6.4 million and Crypto Briefing's estimate, and the Postquant Labs co-founders