LayerQu, the post-quantum readiness reference for L1 and L2 chains

LayerQu, the post-quantum readiness reference for L1 and L2 chains, launched on 12 May 2026. 67 chains were scored under the v3.1 methodology at launch (May 2026), with the methodology, the scores, and the evidence behind every score published in the open. DeployQuantum is the deployment company for the quantum era; LayerQu is the part of that work aimed at public chains.

Why do public chains fall out of quantum-readiness roadmaps?

Most quantum-readiness work assumes a familiar shape: a CISO who owns the cryptographic estate, an audit committee that asks for a plan, a board that signs the budget. Almost every published methodology fits that shape. Public blockchains do not.

Ethereum has no CISO. No audit committee reads Solana’s GitHub. Bitcoin holds no quarterly governance call where a vendor presents the migration plan. A chain has a foundation, a developer community, a DAO, and a hard fork process that is not a procurement question.

The cryptography is not what differs. The same elliptic-curve and hash assumptions everyone else depends on sit at the bottom of every Layer 1 and Layer 2. What is missing is the governance container for the migration: the named owner, the audit deadline, and the public scorecard an institutional buyer can quote. So blockchain quietly drops out of most quantum-readiness roadmaps.

What does LayerQu publish?

Open scores, an open methodology, and the evidence behind every score. Everything is sourced from public artefacts the chain itself has already published: client code, governance proposals, foundation announcements, and peer-reviewed papers. There are no paid listings, no sponsored upgrades, and no foundation reviewers behind the curtain.

Launch fact	Value
Chains scored at launch (May 2026)	67, under the v3.1 methodology
Methodology revisions in the six weeks before launch	3
Paid listings, sponsored upgrades, foundation reviewers	0

LayerQu extends the public surfaces DQ already maintains: post-quantum migration assessments, quantum readiness scoring for organisations, and vendor and research mapping published as open research data.

Who is the reference for?

People inside chains who already get the quantum question and need somewhere to point a serious answer. Sometimes the question arrives from an institutional partner, sometimes from a journalist, sometimes from an auditor. The head of ecosystem, the head of community, and the head of security have mostly known it was coming; few have had a public reference they could hand over. That reference now exists.

It is deliberately unfinished. The methodology was revised three times in the six weeks before launch, and it will be revised again the moment a chain disputes a call with a primary source. That is the design.

Chain foundations, DAOs, ecosystem teams, research collectives, and institutional desks that touch digital assets get the same invitation: come and look, push back on a score, contribute a primary source, or propose a new gate.