Quantum Alliance launches: nine blockchain orgs set open post-quantum readiness standards

Nine blockchain organizations announced the Quantum Alliance on October 15, 2026, an open standards body modeled on the IETF that will publish test criteria, benchmarks and migration reference designs for post-quantum readiness across chains. The launch was reported by The Quantum Insider and Decrypt on the same day, and relayed by Crypto Briefing. The founding members span base-layer protocols, privacy networks, hardware wallets and security auditing.

Founding members

1. Quantus — post-quantum L1, QTC token launched October 6 on NEAR Intents.
2. American Fortress — PQ infrastructure vendor.
3. Intmax — stateless L2 using PQ-friendly primitives.
4. Keystone — hardware-wallet maker.
5. Midnight Foundation — Cardano-aligned privacy sidechain.
6. Postquant Labs — PQ research outfit.
7. Abelian — lattice-based L1.
8. Hacken — audit and security firm.
9. The Vault — self-custody tooling.

Named spokespeople in the launch materials: Christopher Smith (CEO, Quantus), Sebastien Guillemot (CTO, Midnight Foundation), Aaron Chen (CTO, Keystone). No chair is named.

What the alliance will publish

• Scope of the first body of work: transaction signatures, key management, consensus, zero-knowledge proof systems, peer-to-peer connections.
• Four working groups: blockchain migration, post-quantum zero-knowledge systems, wallet security, cross-chain compatibility.
• Deliverables: open test criteria, benchmarks, migration reference designs, cross-chain compatibility specifications. Everything published openly.
• Governance: proposals advance on public evidence and working implementations, not corporate size or token holdings — explicitly modeled on the IETF.

The group does not propose a specific signature scheme to replace ECDSA on existing chains. Its stated role is to define what counts as quantum-ready and provide the test harnesses for third parties to measure it against; the choice of ML-DSA, SLH-DSA, Falcon, lattice, isogeny or hybrid schemes is left to the networks it will certify.

The numbers block

• Quantum-exposed BTC: ~6.04 million BTC (~30.2% of circulating supply), "quantum-exposed at rest," per the launch release. The release cites one secondary analysis and does not publish its methodology.
• Comparable prior estimates: Glassnode has produced the same ~30% figure, splitting it into structural exposure (older script designs with public keys on-chain) and operational exposure (address reuse); Project 11 and a May 2026 blockeden.xyz analysis put the figure at ~6.7–6.9M BTC. The Alliance's number is in line with the public range.
• Nothing on ETH: the launch materials do not state an Ethereum-side figure. Account-based address exposure after a transaction is immediate on EVM chains, so the structural case differs.

Context for the launch

Standards bodies have historically appeared in blockchain cryptography at inflection points — ERC-20 at the ICO cycle, BIP-340 Schnorr around the 2021 Taproot activation, ERC-4337 for account abstraction. Post-quantum migration has moved from research to protocol-track proposals in the last twelve months: BIP-360 (P2TRv2) is the Bitcoin reference track, Starknet's October snapshot vote tested a lattice-first L1 path, and Zcash's Zakura / Vizor PIR work targets a January activation. The Alliance is the first cross-chain governance venue to try to coordinate what those efforts count as "quantum-ready."

What to watch

1. First published criteria. The Alliance has committed to publish openly. The initial test harness and benchmarks — not the launch press release — are the artifact to judge.
2. Which networks apply. Any Alliance certification route is only as credible as its adopters. Bitcoin via BIP-360, Ethereum via EIP-7693 (hash-based accounts) and the lattice-first L1s are the obvious first-wave candidates.
3. Overlap with NIST. NIST's PQC round-four finalists (ML-KEM, ML-DSA, SLH-DSA, HQC) are the regulatory anchor. Whether the Alliance's criteria map 1:1 to NIST schemes or specify blockchain-only variants will determine their acceptance by audit firms and exchanges.
4. Independent BTC-exposed figure. The ~6.04M number has no published methodology in the launch release. A reproducible count — by address type, by last-spend height — is the kind of artifact a credible standards body is expected to publish.
5. Audit-firm uptake. Hacken is a founding member; whether OpenZeppelin, Trail of Bits, Spearbit and ChainSecurity align or publish competing criteria is the material signal for the audit market.

What other outlets missed

The launch materials cite one third-party number for the 6.04M BTC figure, with no methodology attached. An alliance pitching itself on "public evidence and working implementations" that opens with an un-sourced headline statistic has set itself a measurable first test — publish the count, or revise the claim.