Blockchain gears up for post-quantum threats

Blockchains depend on cryptographic systems that secure private keys which authorise transactions and prove ownership of digital assets. These systems are designed to withstand familiar attacks such as brute-force attempts, key-derivation methods, or efforts to extract private keys from public information. Their strength comes from one-way mathematical functions and vast key spaces which make breaking them practically impossible with classical computers.
The rise of quantum computing creates a looming challenge. Quantum systems may one day solve cryptographic problems that currently take classical hardware thousands of years. Experts expect quantum computers capable of breaking widely used blockchain cryptography to emerge during the 2030s. This development could allow attackers to derive private keys from public addresses and expose cryptocurrency wallets to theft. The industry now faces a critical task: preparing blockchain networks for a post-quantum world.

QANplatform introduces quantum-ready architecture
QANplatform has developed a blockchain framework designed to remain secure when quantum computers advance. Its cross-signer protocol, known as QAN XLINK, is central to this approach. The protocol issues dual signatures using classical cryptographic standards alongside a Post-Quantum Cryptography (PQC) algorithm. It works with Ethereum Virtual Machine (EVM) tools and integrates with common wallets such as MetaMask and Trust Wallet.

This dual-signature method aims to provide a smooth migration path from current cryptographic methods to quantum-resilient standards without disrupting existing blockchain use.

Hacken validates post-quantum protocol
Cybersecurity firm Hacken recently completed a full audit of QAN XLINK. The assessment confirmed that the protocol delivers effective protections against quantum-enabled threats.
Hacken had previously audited the QAN Virtual Machine (QVM), a component that enables smart contracts and decentralised applications on QANplatform. The firm used an AI-assisted process to evaluate QVM which resulted in approval for deployment.
Following this new audit, QANplatform states that confidence in its ability to provide quantum-safe blockchain security has strengthened. Co-founder and chief technology officer Johann Polecsak said the review marks an important milestone as the platform advances toward mainnet.

Next steps toward mainnet launch
The audit of QAN XLINK represents the second major review before the platform’s full release. Over the coming months the project will carry out an integration audit to verify interoperability among its blockchain components.
This staged approach ensures that each part of the ecosystem meets security and performance standards before the full network goes live.

Preparing for a quantum-driven future
Quantum computing will require blockchains to operate under new cryptographic standards. QANplatform takes a proactive approach by developing post-quantum signature systems and compatibility features now rather than waiting for the threat to become urgent.
Vitalik Buterin and other industry leaders have warned that elliptic curve cryptography which secures most blockchains will not remain viable once powerful quantum machines emerge. Johann Polecsak has also highlighted the long-term risks and the need for networks to upgrade their cryptographic foundations.
QANplatform aims to create an environment where post-quantum protection becomes a routine part of blockchain operations. The goal is continuity which keeps today’s infrastructure functional while preparing it for technologies that will dominate the next era of secure computation.