Tezos has launched Quantumnet, an experimental test network for developing quantum-resistant cryptography (encryption designed to withstand quantum computers). The network is not the final post-quantum version of Tezos and is not ready for production; it is intended to help developers identify problems, measure performance and refine the technology before potentially proposing a protocol amendment. Tests cover tz5 account signatures using ML-DSA-44, baker selection using Smooth Weighted Round Robin, post-quantum signature aggregation for consensus and ZODA for data availability. TzEL is separately exploring confidential post-quantum transactions. Zaynah Dargaye, Core Layer 1 Engineering Manager at Nomadic Labs, said the work is being conducted early to allow time for learning and iteration and to support a smooth transition path. The effort comes as Ethereum developers target the end of 2029 for a quantum-resistant layer 1, with an intermediate step planned for late 2026, while StarkWare and the MARA Foundation have conducted what was described as the first known quantum-resistant Bitcoin transaction on August 27.