Cardano's new consensus upgrade, Ouroboros Leios testnet, will launch on June 23

Foresight News reported that the Cardano ecosystem will launch the public testnet for the new consensus protocol upgrade, Ouroboros Leios, on June 23, codenamed “Musashi Dojo.” Leios is based on the existing Ouroboros Praos mechanism and introduces endorser blocks and a committee validation mechanism to enhance parallel transaction processing capability. Early simulations indicate that throughput could increase between 10 to 65 times, with the public testnet aiming for approximately a 30-fold improvement in throughput. Before mainnet deployment, full-load testing will first be completed on the testnet.

The public testnet is divided into five phases: Earth, Water, Fire, Wind, and Void. Staking pool operators, developers, and community members can participate in testing and provide feedback. This protocol is a key component of the Cardano Vision 2030 roadmap. Previously, the community supported the implementation by funding proposals to complete adversarial testing and phased rollouts before the end of 2026, aiming to achieve mainnet-readiness. Mainnet activation will begin with a minor increase and expand gradually based on performance data and governance decisions.