Solana’s Two Core Teams Independently Select Falcon for Post-Quantum Security

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Solana’s two core developer teams, Anza and Firedancer, have independently selected Falcon as the network’s post-quantum signature scheme of choice. Both teams have published initial implementations on GitHub, and the project’s leadership has confirmed a migration roadmap is ready when the threat demands it.

Why Solana’s Current Cryptography Is Vulnerable to Quantum Computing

Solana currently relies on Ed25519, an elliptic-curve signature scheme used for transaction authorization. Like Bitcoin’s secp256k1, Ed25519 would be susceptible to Shor’s algorithm running on a sufficiently advanced quantum computer. Shor’s algorithm can efficiently solve the discrete logarithm problem, which forms the mathematical foundation of elliptic-curve cryptography.

Once a quantum computer reaches sufficient qubit stability and scale, it could theoretically derive private keys from publicly exposed addresses, putting user funds and network integrity at serious risk. The timeline for quantum computers reaching that capability remains contested, with estimates ranging from years to decades, but the network’s developers have moved to identify and validate a replacement ahead of time.

Falcon’s Performance Profile Makes It a Natural Fit for Solana’s Architecture

Falcon is a lattice-based digital signature algorithm formally selected by the U.S. National Institute of Standards and Technology (NIST), which cited its efficiency as a key factor. This efficiency is crucial for Solana, as its high-throughput design leaves little room for additional cryptographic load.

Solana’s leadership has said the independent convergence of Anza and Firedancer on the same conclusion through separate research tracks adds confidence to the selection. The project’s blog stated: 

“The alignment around Falcon reflects extensive research around Solana’s quantum resiliency. While no change is required today or likely anytime soon, there is a clear, well-researched plan that can be activated if and when the time comes. The migration work is manageable, the transition can happen quickly when the time is right, and network performance is not expected to see a meaningful impact.”

Solana Outlines Three-Step Migration Roadmap

Solana’s quantum roadmap outlines three sequential stages: continued evaluation of Falcon and alternative schemes; adoption of the post-quantum standard by newly created wallets if the quantum threat becomes credible; and finally, migration of existing wallets to the new standard.

Work on quantum resilience is already live on the network, not just planned. Blueshift’s Winternitz Vault has been running live on Solana for more than two years, and Google Quantum AI cited it in a 2026 research paper on post-quantum cryptography readiness as an example of proactive post-quantum work across the industry.

Solana Joins a Wider Industry Push Toward Quantum-Resistant Infrastructure

Solana is not the only major network advancing post-quantum preparations. In November 2025, the Algorand Foundation’s protocol team completed what it described as the first post-quantum transaction on Algorand’s mainnet, deploying the Falcon signature scheme directly on the live network. 

TRON founder Justin Sun has also announced plans to activate a quantum-resistant network on TRON’s mainnet in Q3 2026, positioning the chain as what he called the “world’s first quantum-resistant network.”