Stellar Reveals Quantum Preparedness Plan to Migrate Network by End of 2027

According to the Stellar Development Foundation, on June 9, the blockchain network revealed its Quantum Preparedness Plan, a phased roadmap to migrate the entire network to quantum-safe cryptography by the end of 2027.

The rollout is structured in three stages. Starting in 2026, post-quantum signature verification using NIST-standard algorithms ML-DSA-44 and ML-DSA-65 will be added to Soroban smart contracts, allowing enterprise wallets to begin migrating. In 2027, a Core Advancement Proposal will bring quantum-safe signer types to classic accounts natively, letting all existing users add them alongside current keys. The third stage—deprecation of the old Ed25519 standard—has no fixed date and will depend on how quantum computing develops and ecosystem readiness.