2026-06-23
Welcome Leios
- The Leios testnet is here, Cardano's scaling solution, taken from an IOHK research paper to a prototype now open for the community to test and break.
- The testnet is named Musashi Dojo after Miyamoto Musashi, whose two sword style maps to Leios's short and long blocks, with phases named after The Book of Five Rings.
- Hoskinson reflects on ten years of work, from Corfu and asking Aggelos for a provably secure proof of stake he said was impossible.
- Ouroboros is framed as the best consensus ever, self healing and telescoping, with a tick tock schedule adding fast finality, decoupled time, privacy, and multi resource.
- Even on a day marred by the Second Fi incident, this is a ten year milestone that predates Ethereum, and Cardano is built on granite.
13 entries
Leios is the scaling solution for Cardano, taken over a year from an IOHK research paper to a prototype now entering the testnet.
The testnet needs SPOs, builders, and dApps to test and break it, so that by the end of 2026 the software is ready for mainnet.
The testnet is named Musashi Dojo, since Musashi's two sword style, one long and one short, mirrors Leios's long and short blocks.
Each phase of the testnet is named after a chapter of Miyamoto Musashi's Book of the Five Rings, about strategy and adaptation.
The age of Lace has been ten years in the making, going back to implementing RSCoin in Corfu, Greece.
Aggelos said a provably secure probabilistic proof of stake with Bitcoin's properties was impossible, and they built it anyway.
Thanks go to the team through the eras, from Duncan Coutts to Sebastian Nagel and Carlos on the Leios team.
Stake pool operators and builders can join at musashi.network, with documentation and a faucet, thanks to Blink, the CF, and the Amaru team.
Leios is presented as the solution to the blockchain trilemma, long overdue and earned as an ecosystem.
Despite the Second Fi incident the same day, widening the aperture shows a ten year milestone that predates the launch of Ethereum.
Ouroboros is called the best consensus ever, self healing and telescoping, with a tick tock schedule of Paris, Chronos, Crypsinous, and Minotaur.
Paired with the extended UTXO model and future work like Star Stream, this becomes a planet scale system.
The markets are bad, but winter passes and spring returns, and those who endured while keeping their principles come out stronger.