Entity timeline
Leios over time
Ouroboros Leios, the throughput upgrade meant to push Cardano into tens of thousands of TPS.
129 mentions, Mar 2022 to Jul 2026 · 4 supportive 0 critical 0 neutral
Marked moments
- supportiveIt is categorically untrue: he is looking forward to Leios and believes in the partner chains model.Jul 2026
- supportiveLeios is the last major update under the old IO engineering, a capstone of ten years building a research lab and world class team.Jun 2026
- supportiveCardano Whale was factually wrong that 50 million cannot be divested in a week, then weaponized his DRep to defund Leios and research.Nov 2025
- supportiveCalls Ouroboros Leios a phenomenal example, a one-minus-delta protocol giving all the performance blockchains need with Hydra and rollups while keeping 50 percent Byzantine security, rather than the centralized route of Sui, Aptos, or Solana.Oct 2024
It is categorically untrue: he is looking forward to Leios and believes in the partner chains model.
supportive Denies a rumor, says he looks forward to Leios and believes in partner chains.
It is only a matter of time before Ethereum adopts Ouroboros Leios and calls it its own.
The hack landed right as Leios launched, so instead of celebrating solving the trilemma the narrative is a preventable Second Fi hack.
Leios is presented as the solution to the blockchain trilemma, long overdue and earned as an ecosystem.
Thanks go to the team through the eras, from Duncan Coutts to Sebastian Nagel and Carlos on the Leios team.
The testnet is named Musashi Dojo, since Musashi's two sword style, one long and one short, mirrors Leios's long and short blocks.
Leios is the scaling solution for Cardano, taken over a year from an IOHK research paper to a prototype now entering the testnet.
Leios establishes a tick tock cadence like Intel, a major throughput upgrade researched one year and implemented the next, every 24 months.
Leios is the last major update under the old IO engineering, a capstone of ten years building a research lab and world class team.
supportive Calls Leios the capstone of a decade building IO's world class research team.
The Leios family reconciles the blockchain trilemma, scaling at 50 percent Byzantine resistance with fast finality from Paris and high decentralization.
The network runs under 20 percent load, so Leios gives three to five years of headroom even before partner chains and Hydra.
Cardano runs at about 4.5 transactions per kilobyte per second, and Leios targets around 200, roughly a 44x increase into the hundreds of TPS.
Earth validates linear Leios, a fast, easy to implement divergence from the paper, then later phases tune parameters and run adversarial testing.
Ouroboros Leios enters its testnet phase the next day, structured around the Musashi phases of earth, water, fire, wind, and void.
IO launched a new podcast, Block 45, with Lilly and Paul, whose inaugural episode is about Ouroboros Leios.
The Leios testnet launches in three days, bringing a 60x speed up, with Parisen fast finality and ZK trustless bridges to follow.
IO engineers worked follow the sun to ship Ouroboros Leios and solve the trilemma, then get told they failed because the ADA price is down.
He is excited about Star Stream, Leios, Midgard, and Hydra coming true, and proud that liquid non custodial staking now works at scale.
With Leios and Paris on a tick tock cycle, Cardano can reach tens of thousands of TPS and is no longer throughput constrained.
The to do list is executive function and specialization, shipping Leios with its June 23 testnet, and growing extended UTXO toward Star Stream.
Leios and Praos deliver fast finality with near infinite scalability that gets more decentralized, not less, as it scales.
He is passionate about solving hard problems like the trilemma, which Leios addresses, and about deep research he thought was Cardano's soul.
DReps to set egos aside and ask what the plan and incentives are, noting IO delivered the technology like Leios but strategy above it is missing.
The IO proposals will decentralize development so that within a year many companies build multiple implementations, with the Haskell node spun out of Input Output and Leios turned on.
The elegant vision underneath, Leios, Hydra, partner chains, and Bitcoin DeFi, puts Cardano on the precipice of being the best, most decentralized cryptocurrency.
Asks why Blockfrost as a partner chain would be treated differently from Midnight when it is the same model, and lays out the plan: Leios, Hydra, DevEx, node diversity, and yearly partner chain airdrops.
Closes that the plan signals Cardano is open for business and going to win, that it is now a utility and experience game rather than infrastructure, and that Leios and diversity will still get done.
Infrastructure is handled by Leios and Hydra solving the blockchain trilemma, but Cardano still needs a 360 approach: people paid to talk about it, presence on the right podcasts, good onboarding, and energized wallets.
Infrastructure is competitive with just Hydra, Leios, and Star Stream, but the ecosystem cannot sustain 25 DEXes at current volume and needs consolidation to one to three projects per category.
Infrastructure, where Ouroboros Leios, the nodes, Plutus, and Aiken live, is the art of the possible and hugely important, but alone is not enough without utility and experiences.
His infrastructure job with Intersect, Pragma, and node builders is making sure the roads handle the traffic, which is what Ouroboros Leios, Hydra, and Peras are for.
Pristine infrastructure alone is not a differentiator, since infrastructure without great utility and experiences is useless, even believing Leios solved the blockchain trilemma.
2026 is a year of compassion and building where RealFi finally realizes the Africa mission with a million Kenya loans in 18 months, Midnight launched after six years, and Leios ships.
The mission is a system that lasts 30 to 100 years and cannot be co-opted, and Leios will make it fast while being done right.
Closes pointing to 2026 as the dawn of Hydra, Leios, and Starstream, with Midnight out and RealFi finally fitting the vision together.
The Midnight Foundation chose Midnight in Cardano over Midnight only, and he wants to make Cardano the fastest growing DeFi ecosystem of 2026 with Leios, Hydra, and Star Stream.
Leios makes the base network faster and Hydra makes each DAP faster, with frequent small Plutus and Aiken updates shipping via Star Stream.
The Leios dashboard launches tomorrow and the team must ship Leios in 2026 with no excuses.
Leios enables improving dry code, a canary network, and capturing user intention via nested transactions and Babel fees.
The Leios team's mempool experiments showed transactions reaching both chains, which prevented most double spends.
Admits detection is their weakest area, and they got lucky heavily monitoring the network for the Leios upgrade.
Cardano Whale was factually wrong that 50 million cannot be divested in a week, then weaponized his DRep to defund Leios and research.
supportive Defends Leios funding against Cardano Whale's DRep move to defund it.
Contrasts Amazon and the internet collapsing while Cardano stayed up 8 years, with Leios making it faster while keeping decentralization.
Leios is the best way to scale globally, Hydra is the app by app scaling, and StarStream improves the dev model.
Shipping Leios in 2026 means refusing to accept it cannot be done, and studying competitors like Paradigm's Reth for the Rust Acropolis node.
Building second nodes before a stable roadmap and certification just slows Hydra and Leios delivery to reduce IO's influence.
The CF incentivized parallel nodes without coordination, so if Leios ships but 40 percent of the network is on unfinished nodes, the fork must wait for them.
The network stack needs an adult conversation as Leios arrives, adding a pub sub architecture for partner chains, DAPs, and SPOs.
The outcomes he wants are Leios shipping, StarStream and Midgard composability, partner chains for Bitcoin and XRP DeFi, and three to five competitive clients.
IO runs a 24/7 follow the sun model for Leios on the Haskell node, reassigning or terminating anyone who resisted the effort.
Doubts the alternative nodes are resourced to build Leios in 2026, so the remedy is more funding for them or delaying Leios.
Pragma members must co author and build the Leios CIP, not just come along for 20 percent of the ride.
Once the paradigm is set with final specs, Hydra, and Leios, client diversity can flourish, but runners ahead must dial home to avoid partitions.
IO is firing on all cylinders with Leios, Hydra, Plutus V4, StarStream, Midgard, partner chains, and a 19 person Bitcoin DeFi team under Omar.
The Leios CIP was delayed because the person writing it was hired by the CF to build a competing client, so a captured organization derails progress.
Accountability means falsifiable outcomes like shipping Leios or launching Midnight, unlike the subjective goal of promoting the brand.
Leios drops in alongside Praos as the operating mode, failing back to Praos, forcing a test suite across the Amaru, Rust, Haskell, and Go nodes.
Leios is the heart of a long arc scaling agenda toward a one minus delta protocol that is network constrained, not consensus constrained.
Summarizes the Leios CIP: 30 to 65x throughput, latency rising from 20 to 40 or 60 seconds, modest four core hardware, and 1 to 1.5 years to market.
Reports major progress on Ouroboros Leios, with a CIP now open for review after seven months of prototyping.
Pi's write up placing Leios as the centerpiece of a scaling strategy alongside Hydra, Mithril, Paris, and Genesis, versus Near's Nightshade sharding, which Leios avoids.
Runs Google deep research on Leios, showing it decomposes to Praos via Paris, trading throughput for determinism, from 10 to 1000 TPS.
Runs Google deep research to generate a 30 page report on Leios from the documentation.
Demonstrates JSON prompting to build a deep research prompt for Leios, which yields far better answers than plain English.
Feeds the Leios site to Claude and calls out its inaccurate summary, showing it correct itself to 11000 TPS potential and a seven stage pipeline.
Shows the dedicated Leios website with monthly updates on research, the formal spec, and Rust and Haskell simulations.
Leios is the most anticipated upgrade, a doover, and Sebastian, Phil, and Santiago will add pub sub after studying the mini protocol and libP2P Gossipsub for data availability.
IO kept shipping through the governance churn on Ouroboros Leios, Plutus, Babel fees, Bitcoin DeFi, Ouroboros Peras, Midnight, Lace, and Reality, though the team is exhausted after seven months.
The best IO can do is write a CIP, spec, and prototype, since if other node builders reject a variant like Leios it could fork the network, turning a guarantee into a best effort.
Ouroboros Kronos is a favorite he would love to implement via a prototype group and CIP like Peras and Leios, but he can no longer unilaterally set the roadmap.
The best days are ahead with Midnight and the Leios CIP, after dinner with Santiago and the TX Pipe team on project blueprint with Blink and Harmonic.
Sergio of Rootstock is helping bring BitVMX to Cardano for a Bitcoin 2025 demo, and Brian Bush's Leios data makes Cardano the fastest chain.
He has a paternal desire to see Cardano succeed and will implement Leios regardless to sunset Basho, alongside a strategic investment in Midgard.
Cherry picking Leios but not the rest downsizes an elite research team to a commoditized time and materials shop, which is why it is a package: vote no, but do not open it up and fight it.
The DREP approved roadmap organizes work into scalability for the future, processing billions of transactions via state channels, rollups, Leios, and Mithril.
Midnight adds meta chain abstraction and multi resource consensus, and calls Leios his solution to the blockchain trilemma balancing decentralization, security, and scalability.
Cardano is the most decentralized cryptocurrency with the best onchain governance, and Leios plus a 2 trillion Bitcoin DeFi opportunity makes it the UTXO DeFi crossroads.
Cardano has the largest onchain governance with Voltaire, everything from Byron to Basho is delivered with Basho coming via Leios and Midgard, so he asks where the deception is after telling the world his plan in 2015.
Thanks the Japanese community as the heart and soul of Cardano's beginnings, promising to keep traveling to finish the budget, roadmap, Leios, Midgard, and Bitcoin DeFi at events like Token 2049.
He flies to Japan on Friday assuming he is not at the event, and his primary job is not lawmaker but crypto CEO chasing adoption, Leios, Bitcoin DeFi, and Midnight.
Leios makes Cardano as fast as Solana without the centralization, Bitcoin DeFi opens the largest crypto market, and partner chains give builders multiple revenue models so ADA stays deflationary.
He is trying hard to bring people together, and the community must understand tradeoffs always exist, since wanting Ouroboros, Peras, and Leios all at once has real costs.
The roadmap includes Midgard and Leios as a first-class citizen, with stacked dev teams writing Leios code 24 hours a day to make Cardano one of the fastest chains, plus the best layer 2 via extended UTXO.
Closes that wallets are a big roadmap pillar alongside partner chains, Leios, and Bitcoin DeFi, with UPLC compilation to RISC-V a priority so Aiken can compile both Bitcoin Script and Plutus, plus multi-chain signatures and TEE support.
Hydra looks great, Leios is being prototyped at bleeding-edge speeds, and second and third generation dApps built on extended UTXO are far better than 2021's first generation.
Legacy finance lets banks make the rules and now big crypto players with network effects do the same, but the answer is not bitterness, it is winning through fair competition by shipping Ouroboros Leios, Midgard, and Gummiworm.
Input endorsers, Ouroboros Leios, are in the prototype team with a current velocity targeting late Q2 2025.
Ouroboros Leios is prototyping with a team of six or seven, a new Cardano node is in the works, the Nintendo emulator on Hydra is next after Hydra Doom, and the DApp store is finally unblocked for Lace.
He invited zkFold, Hydra with Midgard, and Gummiworm into the Peras innovation process to accelerate scaling beyond Leios, and is exploring Rust extraction from literate Agda for formal services.
Proposes Intersect maintain the current Haskell 1.x client while Leios reaches an end-to-end prototype, then deploy Leios on a fresh clean-slate polyglot, event-based, microservices node rather than retrofitting the monolith.
Says Ron Paul joining DOGE makes him happy, framing a Unity party ticket of Trump, RFK, Tulsi, Elon, and Ron Paul, and jokes he cannot give Leios dates under a month-to-month budget where staff update resumes as Microsoft offers 500,000 a year.
Calls Ouroboros Leios a phenomenal example, a one-minus-delta protocol giving all the performance blockchains need with Hydra and rollups while keeping 50 percent Byzantine security, rather than the centralized route of Sui, Aptos, or Solana.
supportive Calls Ouroboros Leios phenomenal, beating Sui, Aptos, and Solana's centralized approach.
Interoperability is achieved through Minotaur, which spawned Leios and merge staking, and partner chains incentivizing trustless direct observation of hundreds of chains instead of zero-sum tokenomics, with scalability via rollups, Hydra, and Leios.
The new on-chain government will weigh Hydra input endorsers via Leios, zero-knowledge tech, and partner chains with a dev team ready to finish, declaring mission accomplished for Basho and Voltaire.
The extended UTXO model keeps paying dividends, from isomorphic state channels and easier rollups to easier scalability, and that diffusion pipelining from 2022 needs an overhaul for Leios.
Recalls the scientists first hammering Leios out at a vineyard for a week after the Crypto conference in Santa Barbara, pulling together parallel chains and other pieces.
Calls this the end of an era, the completion of the original Ouroboros agenda: Kronos for a decentralized clock, Peras for fast finality, Leios for max throughput, Genesis for trustless bootstrapping, and Praos for adaptive security.
Urges builders to join Intersect so that while the ledger is opened for surgery for a meta protocol like Leios, needed changes to interfaces, block headers, and data structures get discussed and turned into proposals.
Tweag continues work on Genesis alongside the Chang bookend hard fork through the summer, with Peras and Leios next in line, so Cardano runs without shutting down every 15 minutes.
Opening the ledger for Leios adds primitives and hooks for recursion, Mithril certificates, Plutus enhancements, core bridges, and Hydra, so everything works better together.
An active team is prototyping Ouroboros Praos over the summer, and they plan to scale it up and start prototyping Leios and the Peras fast-finality protocol, both meta protocols closely related to Praos.
Calls Leios a meta protocol, not a replacement but a reconfiguration of Ouroboros, allowing parallel block processing that still looks like a single sharded environment running at optimal speed.
Leios uses five complementary mechanisms to kill both attacks, letting the network use nearly all its resources toward an alpha of zero, uniquely leveraging extended UTXO and Mithril.
Leios optimizes the protocol, work or stake, to use as much network resource as possible, expressed as one minus Delta times the honest-actor bound, ideally approaching full utilization.
Opens May 1st 2024 to preview a major research paper on the Ouroboros Leios agenda, also known as input endorsers and parallel chains, aimed at solving the blockchain trilemma for good.
The island keeps reclaiming land with the best governance coming online, the community working on the Cardano constitution and CIP 1694, while the rest of cryptoland is Mad Max anarchy sped up only by Leios and Hydra.
Lists the parallel workstreams running alongside governance: Hydra, Mithril, the partner chains framework including Midnight, plus Ouroboros Leios and Peras.
Mithril and Hydra are already on mainnet improving each version, Midnight is in testnet, and the Ouroboros Leios input-endorsers paper is imminent, with Tweag the likely vendor as it did Ouroboros Genesis.
Competitors cannot copy Cardano's hard-won design without winding back the clock, that modular extended UTXO gives state-channel isomorphism making off-chain and on-chain easy, and that Leios enables sensible sharding avoiding Ethereum's 2018 million-TPS mistakes.
Optimization continues in parallel like writing NES games while awaiting the Super Nintendo, but Leios is a major re-architecture, with the paper and Peras coming sooner than people think.
The second principle, universal access for resource providers: any computer should join consensus, unlike expensive Bitcoin ASIC mining, and Leios aims to grow SPOs from thousands to tens of thousands.
At global scale data, storage, and CPU needs soar, but Leios makes validation a parallel process so nodes need not be giant super nodes, and Mithril lets you act like a full node without being one.
Leios took longer because they carefully solved recovery from attack, supported by papers like Ledger Redux, an Ouroboros recovery paper, and the Parallel Chains paper.
Leios uses input blocks and key blocks stitched back together, pushing transactions per transaction way up asynchronously, never throughput-limited as long as things do not contradict.
The third and sexiest category, variously called parallel chains, input endorsers, or Leios, is under heavy review with the paper nearly out, moving from a sequential chain to an asynchronous network.
Highlights technical progress: Ouroboros Peras and Leios as the fast-finality and scalability work, plus Hydra, zero-knowledge, side chains, and Plutus V3 with new bitwise primitives flowing from CIPs.
Rebuts FUD that Midnight distracts from Cardano, since a service layer of many chains is the whole point, while Ouroboros Peras, Genesis, and Leios input endorsers, Plutus V3, and SanchoNet at 86 percent all progress.
Lists improvements making it the best place to issue and settle assets: Ouroboros Leios, Babel fees, Plutus and Aiken, extended UTXO refinements, and security-token standards, wrapped in CIP-1694 governance.
Calls 2024 the year of side chains and Mithril from an IO perspective, with Ouroboros Leios and input endorsers as the research thread, Well-Typed going into heavy modeling.
Updates the open-source work: Mithril 2 almost published, Ouroboros Leios wrapping up as the backbone for input endorsers, Peras as Cardano's finality gadget, and BLS support landing in Plutus V3 for cross-chain bridging.
A big multidisciplinary project with Stanford's lab, Edinburgh as the nerve center, and Aggelos personally doing the research, with Peras designed over the summer and then Leios.
Names the goal Omega: all the fast Leios capabilities plus all the good Ouroboros guarantees like Genesis's asynchronous network model, Chronos time-keeping, and self-healing.
The goal is shifting the trade-off from the consensus algorithm's constraint to what the network and data layer can process, enabling a decade of scalability via Ouroboros Leios, with Peras the current high priority.
You will see the Ouroboros Leios paper in 2023 but not the CIPs or final design, since it changes reward mechanisms and security assumptions and requires 1694 to ratify.
Input endorsers and the Ouroboros Leios paper are scheduled for the first half of 2023, introducing three types of blocks.
Two upcoming CIPs for tiered transaction pricing and congestion control, one bundled with Leios and a standalone for the Genesis era, alongside fixing Babel fees.
Believes Cardano can scale to a billion people through the combined evolution of Leios, Mithril, and Hydra.
Lays out the early 2023 roadmap: CIP-1694, the input endorsers and Ouroboros Leios paper, tiered pricing, and continued Plutus evolution, expecting another year of small incremental gains.
Input endorsers and pipelining, which shift Cardano's bottleneck from consensus to the network stack, previewing the upcoming Ouroboros Leios paper.