Two of Solana’s most widely used validation clients have deployed a test version of its fresh post-quantum signature solution, Falcon, to support prepare the Solana network for future quantum threats.
Monday’s announcement included Anza and Firedancer he said Falcon was created for “high-throughput use of blockchain technology” and that it can be activated “if and when the time comes” – an apparent reference to Q-Day, the moment when quantum computers become powerful enough to break public-key encryption.
“The migration work is easy to accomplish, the transition can happen quickly when the time comes, and network performance is not expected to be significantly impacted.”
Source: Solana Foundation
Fears that quantum computers could eventually crack blockchain cryptography have fueled concerns about private keys and wallet security, sparking a broader debate about how the sector should prepare for the technology.
One of these concerns was building quantum solutions that do not degrade blockchain performance by increasing bandwidth and memory.
To solve this problem, Jump Crypto, the crypto infrastructure platform behind Firedancer, he said Falcon-512 was built to generate the smallest signature among selected US National Institute of Standards and Technology post-quantum signature standards.
He added that Falcon’s signature verification “is not complicated to implement” and that the signing takes place off-chain.
The Solana ecosystem adapted to the quantum plane
Anza and Firedancer said they had independently explored quantum solutions and both concluded that quantum readiness was necessary before agreeing to build the Falcon.
Both validator clients have implemented the initial version of Falcon in their GitHub repositories.
Data Anza’s GitHub account shows that the development team has been working on Falcon since at least January 27, 2026.
Falcon is not the first quantum solution introduced to the Solana ecosystem.
Blueshift’s Winternitz Vault has been offering quantum security to Solana since January 2025, although it is designed as an optional add-on for users and is therefore not a protocol-level update.
Related: Google plans post-quantum migration in 2029 as threats approach
The push comes after researchers at Google and the California Institute of Technology said last month that functional quantum computers may arrive sooner than expected and that they require much less computing power to crack cryptography than previously thought.
Google even claimed that quantum computers could potentially crack Bitcoin’s cryptography within ten minutes, allowing hackers to launch an attack “in a pinch.”
However, Blockstream CEO Adam Back said that current quantum computers are “essentially laboratory experiments” and that no real threat will emerge for decades.
Warehouse: Bitcoin May Take 7 Years to Upgrade to Post-Quantum: BIP-360 Contributor
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