Nervos CKB Adapts with Post-Quantum Protection via SPHINCS+
Singapore, Singapore, February 2nd, 2026, Chainwire
Nervos CKB now allows users to protect their assets from the potential threat of quantum computing.
CKB, the RISC-V-based L1 blockchain, has “passed the point of quantum-resistance,” with the on-chain deployment of SPHINCS+ cryptography and the release of the “Quantum Purse” desktop wallet.
In the past, bespoke chains such as QRL were built specifically with quantum-resistance in mind, and more recently, the mindshare around post-quantum migration has grown rapidly in the Bitcoin and Ethereum communities.
Conservative estimates place Q-Day–the point at which quantum computers are capable of cracking cryptography–around 2040, while some experts claim as early as 2030.
While the hashing algorithms used in mining remain robust, ECDSA, the digital signature algorithm used for transaction authorization, will be among the first targets for quantum attackers. This looming threat has left blockchain networks facing significant uncertainty over post-quantum migration strategies.
CKB’s Unique Approach
CKB is the only blockchain that allows developers to utilize the cryptography and programming languages of their choice, all deployed at the blockchain’s “smart contract” layer.
It has been engineered from the ground up to provide developers complete control and flexibility, making it possible for the blockchain to meaningfully adapt without consensus changes (hard/soft forks). Due to this flexibility, users can opt in to quantum resistance today and look forward to further advancements as they emerge.
“CKB has been prepared to face the potential threat posed by quantum computers since launch. This implementation demonstrates the quiet strength of the Nervos project: headline-worthy functionality with no high-stakes discussions or coordinated upgrades, using well-vetted standard libraries and tools, done through an open source community of developers,” the Nervos Foundation posted to X.
Quantum Purse is a self-custodial CKB wallet for Linux/Mac/Windows that supports NIST-standardized, hash-based, quantum-resistant cryptography (SPHINCS+), offering the highest level of security available today and compatibility for decades to come.
Additional Information
- Quantum Purse release details are available at: https://github.com/tea2x/quantum-purse/releases/tag/v0.3.3
- Information on the Nervos DAO can be found at: https://explorer.nervos.org/nervosdao
- Technical documentation and background materials are available at: https://www.nervos.org/knowledge-base
- Community discussion forums are accessible at: https://talk.nervos.org
About Nervos CKB
Built on RISC-V and secured by Proof-of-Work, Nervos CKB is the most flexible UTXO-based blockchain. It serves as the foundation of the Nervos Network, decentralized infrastructure engineered for long-term security and permissionless innovation.