The Nervos Foundation has announced that its layer-1 blockchain, Nervos CKB, has officially "passed the point of quantum-resistance." This milestone was achieved through the on-chain deployment of the SPHINCS+ post-quantum cryptography standard and the simultaneous release of the "Quantum Purse" desktop wallet.
The move addresses a long-term security threat facing the entire blockchain industry. Conservative estimates suggest "Q-Day"—the point at which quantum computers could crack current cryptographic standards—could arrive around 2040, with some experts warning it could be as early as 2030. While mining algorithms are considered robust, the Elliptic Curve Digital Signature Algorithm (ECDSA) used for transaction authorization is a primary vulnerability.
Nervos CKB's unique architecture is central to this upgrade. Built on RISC-V and secured by Proof-of-Work, CKB is engineered to allow developers to deploy any cryptography or programming language at its smart contract layer. This foundational flexibility enables the network to adapt to major technological shifts, like quantum resistance, without requiring contentious consensus changes or hard forks.
"CKB has been prepared to face the potential threat posed by quantum computers since launch," stated the Nervos Foundation in a post on X. "This implementation demonstrates the quiet strength of the Nervos project: headline-worthy functionality with no high-stakes discussions or coordinated upgrades."
The newly released Quantum Purse is a self-custodial wallet for Linux, Mac, and Windows that integrates the NIST-standardized SPHINCS+ cryptography. It allows users to proactively secure their CKB assets with what is described as the highest available level of security today, designed for compatibility decades into the future.
