Nine blockchain organizations launched the Quantum Alliance on Thursday, an open standards body designed to set criteria for quantum-resistance claims and create compatibility rules as networks migrate to new cryptography.
The founding contributors include base-layer protocols, privacy networks, rollups, hardware wallets, and security firms, including Quantus, Postquant Labs, Midnight Foundation, Keystone, Abelian, and Hacken.
The Alliance will operate four working groups focused on blockchain migration, post-quantum zero-knowledge systems, wallet security, and cross-chain compatibility. Modeled on the Internet Engineering Task Force, the organization said proposals will advance on public evidence and working implementations rather than corporate size or token holdings, with all outputs published openly.
Addressing a Critical Gap
The core problem the Alliance aims to solve is the lack of agreed definition for "quantum-ready" and no standard method to test such claims. Currently, networks can declare themselves quantum-resistant without shared understanding of what that claim covers or what evidence should support it.
Nearly every major blockchain secures accounts using elliptic-curve signatures. Once a public key is exposed on a ledger, a sufficiently powerful quantum computer running Shor's algorithm could theoretically reverse-engineer the private key and seize funds. This cryptography also guards stablecoin minting keys, bridges, oracles, and governance contracts, meaning a single compromised key could cascade across multiple platforms.
Scope of Exposure
By the Alliance's count, approximately 6.04 million Bitcoin—roughly 30 percent of total supply—remain quantum-exposed at rest. The same vulnerability extends across other blockchain infrastructure relying on elliptic-curve signatures.
Timeline Concerns
The Quantum Alliance cites recent forecasts pointing toward the late 2020s as a timeframe of concern. These include a model flagging March 2028 as an early potential window and a Google Quantum AI study that estimated the quantum computer breaking Bitcoin's cryptography would require under 500,000 qubits.
No machine currently possesses the capability to execute such an attack. However, industry participants including Coinbase have urged Bitcoin developers to begin quantum migration preparations now, suggesting the process could take years.
