Algorand Foundation Plans Quantum-Resistant Blockchain by 2027

The Algorand Foundation on Thursday announced a plan to make its blockchain resistant to future quantum-computing attacks by the end of 2027, laying out a roadmap to upgrade everything from user accounts to core network infrastructure.

The proposal is the latest effort by a major blockchain to prepare for a future where quantum computers could break the cryptography that secures billions in digital assets.

"Algorand's roadmap reflects a belief that security should be designed for the future," Algorand Foundation CTO Bruno Martins wrote. “With the first milestones launching in 2026 and broad deployment targeted for the end of 2027, Algorand is taking concrete steps toward a future where users, developers, and institutions can build with confidence, today and in the decades ahead.”

While a quantum computer powerful enough to crack the cryptography of Bitcoin and other major blockchain networks does not exist yet, researchers, government agencies, and blockchain developers are increasingly planning for the transition, including Amazon, IBM, and Google, aiming to be quantum-resistant by 2030.

“As a custodian of a global blockchain network, the Algorand Foundation takes that threat seriously and has been researching and preparing for several years,” Martins said. “The Foundation does not surrender to alarmism, however, because there is still uncertainty on the horizon, and committing blindly comes with serious compromises.”

According to Martins, Algorand's roadmap includes new quantum-resistant accounts based on Falcon, a post-quantum digital signature system designed to withstand attacks from future quantum computers. The foundation also plans to support hybrid accounts that combine traditional and post-quantum signatures, allowing users to rely on both systems during the transition, as well as upgrades for multisignature wallets and institutional custody systems.

Beyond user accounts, the foundation is also targeting the cryptography used to secure the network itself, including developing a quantum-resistant replacement for the system that generates the randomness used to select validators and exploring alternatives to signatures. The first upgrades are expected to begin rolling out in 2026, with broad deployment targeted by the end of 2027.

The announcement comes as investors have shown increasing interest in quantum-resistant blockchain technology. In April, Algorand's token (ALGO) surged more than 40% after Google cited the network's "real-world deployment" of post-quantum protocols in a research paper.

The move also comes amid growing discussion of "Q-Day," the point at which quantum computers could break the cryptography securing cryptocurrencies, derive private keys from public keys, and steal funds. The issue gained additional attention this week after France's cybersecurity agency announced plans to stop certifying products that do not support quantum-resistant encryption beginning in 2027.

Earlier this month, Stellar developers unveiled a three-stage migration plan designed to move the network to quantum-safe cryptography while allowing users to retain existing wallet addresses. Bitcoin developers are also exploring multiple approaches, including a proposed migration framework that would eventually freeze coins that fail to move to quantum-resistant addresses and experimental implementations of BIP-360, a post-quantum architecture designed to reduce public-key exposure.

Ethereum researchers have also begun formal post-quantum planning, while Cardano founder Charles Hoskinson has argued that quantum-resistant systems are necessary but could introduce performance and infrastructure tradeoffs.

Despite uncertainty over when quantum computers could threaten modern cryptography, Martins said the clock is ticking.

“If you’re in the blockchain industry, post-quantum preparations need to start now if they haven’t already,” Martins wrote.