Cardano has officially enacted its Van Rossem hard fork, moving the network to Protocol Version 11 through an intra-era upgrade that keeps the ledger inside the current Conway era.
The activation went live on Saturday, July 18, 2026, at 21:44:51 UTC on Slot 192,844,800, closing a governance cycle that industry observers are calling the most significant procedural milestone since the launch of the Voltaire era.
Unlike every prior upgrade in the network’s history, Van Rossem was not orchestrated by Input Output, Emurgo, or the Cardano Foundation acting as founding entities. It was initiated, debated, and ratified entirely through decentralised governance, making it the first hard fork in Cardano’s history driven end-to-end by onchain participants.
Ratification Timeline and Governance Path
The hard fork initiation action was submitted to the mainnet on June 16, 2026, during Epoch 637, and cleared the required governance thresholds within roughly four weeks. Per Intersect’s official update, ratification required sign-off from three separate bodies under the Voltaire framework: Delegated Representatives (DReps), the Constitutional Committee, and Stake Pool Operators (SPOs).
Voting closed at the epoch boundary on July 13, 2026, at 21:45 UTC with the following results: DReps at 77.63% against a 60% requirement, SPOs at 52.7% against a 51% requirement, and 6 Constitutional Committee members voting in favour with 1 not participating.
Per the constitutional threshold, at least 85% of stake pools by active stake had to be running a node version compatible with Protocol Version 11 before ratification. Network telemetry showed adoption ran well ahead of that benchmark, with 93% of block production already running on node version 11 heading into activation and exchange readiness by liquidity reaching 84.15%.
The Hard Fork Working Group, coordinated by Intersect MBO in collaboration with its Technical Steering Committee, handled the technical rollout. Coordination involved members from Input Output, Cardano Foundation, Midnight Foundation, Shielded, Ensurable Systems, and Emurgo. This is the third hard fork Intersect has coordinated, following the Chang and Plomin hard forks in 2024 and 2025.
Technical Payload: Plutus Upgrades and Cost Model Rework
The governance proposal outlines the technical scope in detail. Following the fork, several new Plutus primitives defined in CIP-0109, CIP-0132, CIP-0133, CIP-0138, and CIP-0153 became available, and all Plutus built-in functions are now available consistently across Plutus V1, V2, and V3, expanding the capabilities of Plutus V1 and V2 scripts.
The upgrade also adds support for “case”-expressions on built-in types (Bool, Integer, and Data) in Untyped Plutus Core, providing performance improvements and cleaner script logic. A parallel update to the Plutus cost model, the pricing schedule that determines how much computation each smart contract operation costs on-chain, was enacted separately on May 16, 2026, at 00:00 UTC ahead of the mainnet fork.
In practical terms, developers building on Plutus should see immediate reductions in execution costs for select on-chain operations, a change directly aimed at DeFi builders, NFT platforms, and dApp deployers who have long cited transaction economics as a bottleneck.
Runway Toward Dijkstra and Leios
Van Rossem is not an era transition. It is an intra-era hard fork designed to add improvements while keeping Cardano inside the Conway era, reducing disruption for wallets, exchanges, stake pool operators, and dApps. Its strategic purpose is forward-looking: it lays the technical foundation for the upcoming Dijkstra era, which is expected to introduce Ouroboros Leios, the throughput scaling design targeted for mainnet rollout before the close of 2026.
Why the Naming Matters
The upgrade’s name carries symbolic weight for the community. Max van Rossem, a Cardano governance contributor, passed away on January 11, 2026. His son, Max Louis Hans van Rossem, was born the same day.
Between January and February 2026, Intersect ran an on-chain DRep naming vote for Protocol Version 11 in which support exceeded 80% of active DRep stake, making it one of the most decisive governance votes the network has recorded.
Market Reaction and Onchain Positioning
ADA moved into the activation window on a firmer footing than it held for most of Q2. According to CoinMarketCap, Cardano is trading at $0.1647 with a 24-hour volume of roughly $162.85 million and a market capitalisation of $6.01 billion, holding rank 16. The token’s circulating supply stands at 36.48 billion ADA against a maximum of 45 billion.
Price action in the run-up to activation reflected reduced governance uncertainty. ADA rose approximately 4% to $0.164 in the session before the fork, slightly outperforming Bitcoin’s 3.07% move. Immediately after activation, ADA extended gains, with intraday prints near $0.167, well ahead of Bitcoin’s 1.87% rise in the same window.
Onchain data adds a more constructive layer. Wallets holding between 100,000 and 100 million ADA now control approximately 25.65 billion ADA, the highest concentration in that cohort since February 2023. Derivatives markets remained more cautious into the event, with futures open interest climbing to the $421 to $445 million range and the long-to-short ratio sitting near 0.58, signalling bearish positioning by short sellers ahead of activation.
Broader Context: IOG Steps Back From Node Development
Van Rossem is landing alongside a structural shift in how Cardano is engineered. As covered in related reporting by The Crypto Times, Input Output Global is stepping away from Cardano node development, with IO Labs handing Haskell node development to community control and independent teams taking on a bigger role in maintaining Cardano’s core software. Under the plan, which IOG says began in 2024 and is expected to be completed by 2027, several independent firms will maintain at least three Cardano implementations written in Haskell, Rust, and Go.
Read together, the two developments reinforce a single narrative: the network is transitioning from a founder-led architecture to a community-run one, with governance, engineering, and roadmap execution all shifting toward decentralised custody.
Analyst View
The importance of Van Rossem for Cardano is less about the individual Plutus primitives shipping today and more about the governance precedent it sets. Every future hard fork on Cardano now has a template: submission, DRep debate, SPO threshold verification, Constitutional Committee ratification, and epoch-boundary enactment, all onchain and all auditable.
The successor to the Vasil hard fork of September 2022, which was orchestrated top-down, Van Rossem is the first stress test of whether Cardano’s Voltaire era can actually deliver protocol change without founder-entity coordination. The result is a yes.
Attention now shifts to two vectors: how quickly wallets, dApps, and exchanges integrate the new Plutus capabilities and cost model, and whether the Dijkstra era proposal reaches mainnet governance on schedule to unlock the Leios throughput upgrade before year-end. For ADA, the immediate catalyst has resolved bullishly, but the medium-term thesis rests entirely on execution.
Also Read: Ethereum Eyes Preemptive Quantum Protection for 7 Cents Without a Hard Fork
