Nine blockchain organizations form Quantum Alliance to set post-quantum cryptography standards

On October 15, 2026, nine blockchain organizations formed the Quantum Alliance to establish open post-quantum cryptography standards across networks, wallets, and cross-chain systems. The move comes amid rising concerns over quantum computing threats, with 6 million Bitcoin (30% of total supply) and almost the entire $2.9 trillion crypto market exposed to potential quantum decryption by 2028 or 2029. Meanwhile, Singapore launched a Quantum-Safe Kickstarter Grant funding up to 70% of transition costs.

Formation of the Quantum Alliance

• ▪Nine blockchain organizations formed the Quantum Alliance on October 15, 2026, to develop open standards for assessing quantum readiness across blockchain networks, wallets, and infrastructure.
• ▪The Quantum Alliance comprises contributors from Quantus, American Fortress, Intmax, Keystone, Midnight Foundation, Postquant Labs, Abelian, The Vault, and Hacken.
• ▪The Quantum Alliance will publish its work openly to enable projects and observers to evaluate quantum-readiness implementations against unified criteria.

Quantum Alliance structure and standards process

• ▪The Quantum Alliance structured its standards development across four working groups covering blockchain migration, post-quantum zero-knowledge systems, wallet security, and cross-chain compatibility.
• ▪The Quantum Alliance's migration group addresses moving existing funds and keys to post-quantum cryptographic schemes, including assets linked to exposed public keys or inaccessible accounts.
• ▪The Quantum Alliance will adopt an open development process modeled on the Internet Engineering Task Force, evaluating proposals through public evidence, rough consensus, and working implementations.

Cryptocurrency vulnerabilities to quantum threats

• ▪Almost the entire $2.9 trillion cryptocurrency market relies on classical signatures that could be compromised by sufficiently powerful quantum computers.
• ▪As of October 2026, Bitcoin had fallen nearly 35% from its October 2025 high, Ethereum over 50%, and Solana and XRP each 65%, partly attributed to quantum computing risks.
• ▪Forecasts cited by the Quantum Alliance indicate that practical quantum threats to existing cryptography could emerge around 2028 or 2029.
• ▪An estimated 6 million Bitcoin, representing over 30% of the total Bitcoin supply, is quantum-exposed at rest due to reliance on elliptic-curve signatures.

Singapore measures for quantum-safe migration

• ▪The Cyber Security Agency of Singapore published an advisory on October 14, 2026, recommending organizations with quantum threat exposure establish migration plans by 2027 and complete transition by 2035.
• ▪Minister Josephine Teo announced the Cyber Security Agency of Singapore's Quantum-Safe Kickstarter Grant on October 14, 2026, to subsidize up to 70% of quantum-protection testing costs.
• ▪In June 2026, the Cyber Security Agency of Singapore directed critical information infrastructure owners to submit migration plans by March 2027 and complete quantum migration by 2031.