Dormant accounts are the hardest part. That is one of the quiet admissions buried in Stellar’s newly released Quantum Preparedness Plan, a phased roadmap to migrate the entire network to quantum-safe cryptography by the end of 2027.
The Stellar Development Foundation said it will seek community input on how to handle accounts that have gone inactive — and whether recovery mechanisms are even possible for them.
A Threat That Starts With MathQuantum computers will eventually break the cryptography behind nearly every blockchain. This threat will extend far beyond blockchain to every major industry.
When, not if.
On most chains, going quantum-safe means moving every asset to a brand-new account.
On Stellar, you…
Stellar identified two core risks. The first involves validator signatures, where a breach could destabilize network consensus. The second — and more difficult — is account takeover, where a quantum machine could derive a private key directly from a public one.
With thousands of dormant accounts on the network, addressing that second threat at scale is a problem without an easy answer.
What Sets Stellar ApartMost blockchains tie an address directly to a public key, which means going quantum-safe typically requires moving assets to an entirely new account.
Stellar works differently. Its account addresses are separate from the signing keys attached to them. Users can add or swap signers through an existing operation called set_options without touching their address, balance, or transaction history.
According to the foundation, that structural design gives the network a smoother path than many of its peers.
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.
The third stage — deprecation of the old Ed25519 standard — has no fixed date and will depend on how quantum computing develops and how ready the broader ecosystem is.
One Gap Remains OpenNot everything is covered. Reports indicate that zero-knowledge proof systems running on the network use pairing-based curves that are also vulnerable to quantum attack, and the foundation acknowledged that this area still requires further research. Separate collaboration with ZK protocol teams is planned to address it.
Featured image from Trezor, chart from TradingView
