Quantus launches mainnet with post-quantum cryptography from block one as quantum threat grows

What happened

Quantus, a proof-of-work blockchain with quantum-resistant security, launched its mainnet on September 10, 2026, moving from testnet to a live network open to miners. It includes post-quantum cryptography, which is encryption designed to resist future quantum computer attacks.

Confirmed

Global impact / market context

Most blockchains use elliptic-curve cryptography, which quantum computers could break. If that happens, users must move assets to new addresses. Quantus aims to avoid this by using post-quantum cryptography from the start, potentially attracting users seeking future-proof security.

Analyst inference

The threat of quantum computers breaking current encryption is growing, but most blockchain networks have not yet addressed it. This launch positions Quantus as an early adopter, which could pressure other networks to accelerate their own quantum-resistant upgrades to stay competitive.

Analyst inference

What to watch

1. Quantus's mainnet is now live and open to miners from day one, so watch for the number of miners joining and the network's hash rate, which indicates computing power and security. Confirmed
2. Watch whether other blockchain projects announce plans to integrate post-quantum cryptography, as this could signal a broader industry shift and affect investor confidence in existing networks. Proposed
3. Monitor user adoption of Quantus, such as transaction volume and asset transfers, to see if the quantum-resistant feature attracts real usage, which would validate its value proposition. Analyst inference

Evidence

• finbold.com