Tezos introduced Quantumnet on September 24, presenting an experimental test network for evaluating post-quantum cryptographic approaches.
The Tezos Spotlight announcement describes work involving Nomadic Labs, Trilitech and other contributors. The experiment covers several parts of the network rather than replacing only the signature used by an ordinary account.
The experiment spans multiple mechanisms
The announcement describes a new account-signing approach using ML-DSA-44, alongside changes to consensus and data availability. It also replaces the existing randomness-related approach for assigning baking rights in the experimental network.
These are testnet design choices. The announcement does not mean Tezos mainnet has migrated to Quantumnet or that existing users’ funds have moved.
Post-quantum work is preparation for a class of future cryptographic risk. A testnet launch does not establish that current systems have already been broken by a quantum computer.
Deployment requires more than choosing an algorithm
A network transition needs performance testing, implementation review and a workable path for accounts and applications. Signature size, verification cost and operational compatibility can all affect the result.
An experimental environment lets developers examine those trade-offs before proposing a production change. It is not a security guarantee for a future release.
Our wallet explainer describes the role of signing credentials in authorizing transactions. Quantumnet explores changes to that machinery as well as other network components; ordinary wallet users should distinguish experimentation from instructions to migrate.
