Cardano’s next major scaling effort is moving deeper into governance, with Input Output seeking a treasury withdrawal to advance Leios from testnet work toward a mainnet-ready release candidate. The proposal centers on a consensus upgrade designed to increase Cardano’s transaction capacity while preserving the network’s existing security and decentralization assumptions.
Cardano Leios Proposal Targets Major Throughput Gains
Charles Hoskinson, founder of Cardano and CEO of Input Output, amplified the proposal on X with a brief message: “Leios is coming.” His post quoted Sebastian Nagel, an Input Output engineer involved in Cardano development, who wrote: “Cardano, if your governance permits, we’ll ship Leios.” The comment reflects the central condition around the upgrade: Leios is not being presented as an automatic roadmap item, but as a governance-funded project requiring approval from Cardano’s delegated representatives.
Input Output describes Leios as an enhancement to Ouroboros Praos, Cardano’s current consensus protocol, rather than a replacement. The design introduces Endorser Blocks and committee-based validation to raise throughput while retaining Praos as the settlement foundation. In its proposal, Input Output writes: “Cardano needs a step change in throughput to meet its 2030 ambitions, and Leios is how it gets there. This proposal funds the path from public testnet to a mainnet-ready release candidate — delivering a 10–65x increase in transaction capacity.”
The scaling target is tied to Cardano’s 2030 product strategy, which aims to move from roughly 800,000 monthly transactions to more than 27 million. Input Output says sustainable utilization would require at least 6x current capacity, while Leios is intended to provide 10x or more under validated parameters, with higher capacity demonstrated first on testnet. The company’s article states: “We’ve designed Leios to enhance Praos, not replace it. It adds endorser blocks and committee-based validation, which increase the number of transactions Cardano can process while preserving Praos’s security model.”
Treasury Vote Would Fund Mainnet-Ready Upgrade
The governance action asks for ₳27,714,342 from the Cardano Treasury, with Input Output’s Cardano Business Unit listed as the requester. The work is structured around three objectives: producing a mainnet-ready release candidate, validating the protocol through load testing and adversarial exercises, and completing hard-fork enabling work such as stable client interfaces, documentation, ecosystem workshops, testnet hard forks, and governance artifacts. The proposal says: “The current budget cycle ending June 2026 delivers an early public testnet. This proposal picks up from there and focuses on three objectives.”
The roadmap places the release candidate work in Q4 2026, high-confidence validation in Q1 2027, and hard-fork enabling activity across Q4 2026 to Q1 2027. The proposal also makes clear that mainnet activation itself depends on external factors, including third-party infrastructure readiness, governance action submission, and a community hard-fork vote. It states: “Success is defined by completing these activities, not by the mainnet hard fork occurring. The proposal explicitly excludes external dependencies like the community hard-fork vote from its acceptance criteria — those are captured as risks, not promises.”
Funding would be administered through Intersect using treasury reserve smart contract infrastructure, milestone-based disbursements, third-party assurance, and oversight committee checks. Unspent funds are to be returned to the Treasury, with final reconciliation included in oversight reporting. The proposal says: “Intersect administers all funds through milestone-based smart contracts with independent oversight. Unspent funds return to the Treasury.”
For Cardano, the Leios vote is a test of whether its governance system will fund a major consensus-layer scaling initiative through a staged and auditable process. If approved and delivered as proposed, Leios would move from public testnet work toward the release candidate and hard-fork preparation needed for a phased mainnet rollout.
AI Transparency Note: This article was prepared with the assistance of an AI system based on the sources listed and was reviewed, edited, and approved by a human editor before publication. All quotes, data points, and factual claims are intended to be grounded in the cited source material; however, errors cannot be ruled out entirely.
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