Quantum Alliance Launches with 9 Blockchain Firms to Define Post-Quantum Standards

Nine Blockchain Firms Form a Standards Body

Executives from nine blockchain organizations announced the launch of the Quantum Alliance on Friday, October 16, a standardization body created to define what “quantum readiness” actually means for the industry and to set common criteria for moving to post-quantum cryptography. The founding group spans base-layer protocols, privacy networks, rollups, hardware wallet makers, security auditors and quantum-computing infrastructure providers, and its stated goal is a shared standard that lets projects migrate without breaking compatibility with one another.

The urgency comes from how nearly every major chain secures assets today. Bitcoin, Ethereum and most other networks rely on elliptic-curve signatures, and each transaction leaves a public key permanently visible on the ledger. A sufficiently capable quantum computer running Shor’s algorithm could derive the private key from that exposed public key and move the funds. The same signature scheme protects stablecoin issuer keys, governance contracts over dapps, bridges and oracle feeds, so a single broken management key could spread losses across multiple platforms.

The alliance’s own estimate puts roughly 30.2% of Bitcoin’s supply, about 6.04 million BTC, at risk from quantum attacks, with the broader crypto market, valued near $2.9 trillion, overwhelmingly dependent on legacy signatures. In its launch announcement, the group cites a growing set of forecasts placing the first practical quantum attack around 2028, including a model built by two of its contributors that flags March 2028 as an early warning date, and Google Quantum AI research estimating that fewer than 500,000 qubits would be needed to break Bitcoin’s cryptography.

The gap the group wants to fill is definitional. NIST formalized the first post-quantum cryptography standards in August 2024, but the blockchain industry has never agreed on how to define, let alone verify, quantum resistance.

Four Working Groups and Public Benchmarks

The founding members are Quantus, American Fortress, Intmax, Keystone, Midnight Foundation, Postquant Labs, Abelian, The Vault and Hacken. The first deliverable is a published definition of “quantum readiness” covering transaction signatures, key management, consensus among validators, zero-knowledge proof systems and peer-to-peer connections. Alongside it, the alliance plans public test criteria and benchmarks that each development team can run against its own implementation.

Four working groups will carry the work. The blockchain migration group studies how existing networks move to post-quantum schemes, including what to do with assets whose public keys are already exposed and dormant accounts nobody can retroactively protect. A second group assesses zero-knowledge systems for quantum vulnerabilities; a third defines common specifications for generating, storing, signing and recovering post-quantum keys in wallets; and the fourth sets interoperability rules for cross-chain compatibility, the territory of bridges such as Wormhole, so security stays consistent across chains.

All outputs will be published and free for projects to adopt directly, and individual developers and researchers can join, with proposals debated on public evidence and working code rather than company size or token holdings. The alliance will also publish migration design references that address the data bloat post-quantum signatures introduce, since larger signatures raise transaction costs.

The pressure to move quickly is not hypothetical. Coinbase warned on Tuesday, October 13 that Bitcoin’s post-quantum transition could take years and urged early preparation, a view that reflects how long a signature-scheme change takes once network rule changes, wallet updates and service coordination are counted. Quantus CEO Christopher Smith said in the alliance’s launch announcement that post-quantum cryptography will eventually simply be called “cryptography”, and that the group wants ready-made standards for the difficult migration decisions ahead.

Our reading: the alliance’s real contribution is not a new threat model but a verification layer. Right now a project can claim quantum readiness with no agreed way to prove it, which leaves exchanges and custodians guessing when they evaluate counterparty risk. A published definition with runnable benchmarks gives auditors like Hacken something to test against, and gives larger networks a checklist for a migration Coinbase already expects to take years. The open question is adoption: the standards only matter if Bitcoin and Ethereum client teams and major wallet providers treat the benchmarks as reference tests, so watch for the first public readiness assessment run against them.