Naoris Protocol has launched a quantum-resistant blockchain mainnet designed to maintain security even against attacks by quantum computers, CoinDesk reported on April 3.

Naoris Protocol Chief Growth Officer Nathaniel Szerezla (나타니엘 스제레즐라) said, "The mainnet signifies a transition from proof of concept to real operational infrastructure." He said it had already validated more than 100 million transactions using post-quantum cryptography. "This is measured operational capability, not a roadmap promise," he said.

The launch comes as concerns grow that existing blockchains such as Bitcoin and Ethereum could face a so-called "quantum doomsday (Q-Day)" threat.

Q-Day refers to the point when quantum computers become able to break the cryptography that protects most blockchains. This week, Google published a report saying a sufficiently powerful quantum computer could break the Bitcoin blockchain with fewer than 500,000 qubits. That is far lower than previous estimates.

Naoris emphasised it was built from the start with post-quantum cryptography. It added that it uses algorithms approved by the U.S. National Institute of Standards and Technology (NIST) to protect accounts, transactions and digital assets.