Nine blockchain organizations jointly founded the Quantum Alliance today, aiming to establish unified, open post-quantum standards for the industry. It may seem like a distant concern, but the data revealed behind it is enough to make anyone catch their breath. The alliance warns that the elliptic-curve signature schemes widely used by major public blockchains have already left around 6.04 million bitcoins vulnerable to quantum attacks because their public keys have been exposed on-chain. That’s equivalent to 30% of Bitcoin’s total supply. Once a sufficiently powerful quantum computer is built, it could theoretically use Shor’s algorithm to derive private keys and drain wallets. This new organization is modeled directly on the Internet Engineering Task Force and is divided into four working groups: chain migration, post-quantum zero-knowledge systems, wallet security, and cross-chain compatibility. Infrastructure protocol and security firms including Keystone and Hacken have already joined. Public keys for many early, long-dormant addresses have long been exposed on-chain. Cryptographic upgrades at the code level must happen before quantum computing makes a breakthrough—it’s better to prepare in advance than wait for disaster to strike.

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