Cardano founder Charles Hoskinson announced “Leios is coming” as Input Output submitted a ₳27.7 million funding proposal to the network’s governance body, DReps, to accelerate development of Leios—a consensus protocol upgrade designed to increase transaction throughput by 10-65x. The proposal targets mainnet readiness by Q4 2026, marking a critical step toward Cardano’s 2030 scaling ambitions of processing 27 million monthly transactions.
Leios Protocol Enhances Ouroboros Consensus Without Replacement
Leios is an upgrade to Cardano’s Ouroboros Praos consensus protocol that introduces endorser blocks and committee-based validation mechanisms. Unlike full protocol replacements, Leios preserves existing stake pool economics and decentralization guarantees while unlocking significant throughput gains. The upgrade is currently in public testnet prototype phase. Sebastian Nagel, IO researcher, stated: “Cardano, if your governance permits, we’ll ship Leios,” underscoring that mainnet activation requires explicit governance approval and ecosystem readiness—not merely technical completion.
Funding Request Allocates ₳23.83M to Core Development
Input Output’s proposal requests ₳27.7 million over 6-9 months, with ₳23.83 million (86% of budget) directed to development work. At ADA’s press-time price of $0.2661, the request totals approximately $7.37 million in USD equivalent. The funding seeks to transition Leios from prototype to release candidate status, with phased mainnet throughput increases ranging from 2x to 30x capacity depending on implementation scope. Cardano currently processes roughly 800,000 monthly transactions; scaling to 27 million by 2030 requires at least 6x minimum capacity improvement.
Leios Critical to Cardano’s 2030 Transaction Targets
The proposal document states: “Cardano needs a step change in throughput to meet its 2030 ambitions, and Leios is how it gets there.” Current Ouroboros Praos limitations constrain per-block transaction volume. Leios addresses this constraint through endorser blocks—a mechanism that allows validators to signal transaction inclusion separately from block production. This architectural change enables higher effective throughput while maintaining the security properties that made Ouroboros foundational to Cardano’s design. The upgrade integrates with Intersect, Cardano’s treasury administration framework, for governance coordination.
DRep Vote Required; Risks Remain Unresolved
DReps—Cardano’s delegated representatives in on-chain governance—must vote to approve funding. The proposal identifies ecosystem readiness, governance action execution, and community vote as key risks, not guarantees. No official DRep voting timeline has been announced. Specific testnet performance metrics remain undetailed, and operational cost increases for stake pool operators have been flagged but not quantified. Mainnet activation will require demonstrable protocol stability and explicit governance consensus.
