Nine blockchain organizations have formed the Quantum Alliance to develop open standards for testing quantum-resistance claims, shifting the focus from security labels to evidence that wallets and networks can be assessed against.
The group announced the initiative on October 16. Its planned work covers how to define post-quantum readiness, verify implementations and keep systems compatible as different parts of the industry migrate.
A common test for competing claims
Founding member Hacken says the alliance will publish open test criteria and benchmarks. Its first definition of readiness will cover transaction signatures, key management, consensus, zero-knowledge proofs and peer-to-peer connections.
The breadth matters because a product can use a new signature algorithm in one place while depending on older cryptography elsewhere. A claim about an isolated component does not establish the readiness of the entire system through which a user stores, authorises and transfers assets.
The group's announcement identifies nine founding organizations: Quantus, Postquant Labs, Midnight Foundation, Keystone, American Fortress, Intmax, Abelian, The Vault and Hacken. They span networks, wallets and infrastructure, rather than representing a decision by Bitcoin's participants to adopt a protocol change.
Migration reaches beyond the algorithm
Hacken describes four work groups covering blockchain migration, post-quantum proof systems, wallet security and cross-chain compatibility. Planned outputs include migration reference designs addressing exposed keys, dormant accounts and the larger transactions that replacement signatures can create.
These are planned deliverables, not a certification that every founding member or every blockchain has already completed migration. A useful assessment will need to identify what was tested, which version was examined and what remained outside the scope.
Interoperability is another practical challenge. A wallet, hardware signer and receiving application must agree on how to handle the relevant keys and signatures. Strengthening one part while leaving the others unable to process its transactions can interrupt the route users rely on.
Our self-custody guide explains the existing distinction between holding assets and controlling the authorisation material. A cryptographic migration adds a coordination problem to that responsibility.
Existing standards provide a starting point
The US National Institute of Standards and Technology released three principal post-quantum standards in August 2024. They include ML-DSA and SLH-DSA for digital signatures and ML-KEM for key establishment.
NIST says organizations should identify where vulnerable algorithms are used and plan replacement or updates. Having a standardized algorithm available is different from deploying it across an operating blockchain and all of its connected services.
No existing quantum computer can perform the key-recovery attack described in the alliance's materials. Predictions about when such a machine could exist remain uncertain; forming a standards group does not supply a reliable date or demonstrate that Bitcoin can be stolen that way today.
The immediate development is an effort to make security assertions comparable and testable. Its value will depend on published criteria, evidence from implementations and adoption beyond the founders—not on how strongly participants describe their own readiness.