Markets Cardano's Van Rossum hard fork has transitioned the network to version 11 as of July 18, marking a significant shift as the community, rather than the founding company, voted on the upgrade.
The Significance of the Van Rossum Hard Fork
On July 18, Cardano's Van Rossum hard fork was activated, advancing the network to protocol version 11. This upgrade reduces smart contract execution costs and sets the stage for future scalability enhancements.
Notably, this upgrade is unique in Cardano's history as it was proposed, discussed, and approved entirely through the on-chain governance framework, rather than being dictated by Input Output, the blockchain's founding developer. This change signifies a shift in control over protocol modifications.
While everyday transactions involving ADA remain unaffected, this hard fork allows for more efficient smart contracts and lays the foundation for the anticipated Ouroboros Leios scaling upgrade, scheduled for 2026.
According to on-chain data from Cardanoscan, the network's transition from version 10 to version 11 occurred in epoch 644, following ratification on July 13. The upgrade required approval from three distinct governance bodies, each assessing the proposal differently.
Delegated representatives, elected by ADA holders, voted overwhelmingly in favor at 78.97%, surpassing the required 60% threshold. The constitutional committee, tasked with evaluating compliance with the Cardano Constitution, unanimously confirmed the proposal, requiring agreement from at least five of its seven members.
Interestingly, the pool operators, who maintain the network's infrastructure, narrowly approved the hard fork with only 53.02% in favor, highlighting the unpredictable nature of decentralized governance.
For the upgrade to be ratified, at least 85% of stake pools by active stake needed to operate compatible node software. Current telemetry indicated that approximately 93% of block production had already shifted to version 11 ahead of the activation.
Understanding Version 11
From a technical perspective, version 11 is classified as an intra-era hard fork, meaning it operates within Cardano's existing governance framework without altering transaction structures, thus minimizing the upgrade effort for the ecosystem.
This version introduces enhanced capabilities to Plutus, the platform utilized by developers for Cardano's smart contracts, ensuring a unified set of functions across all platform versions, enabling older applications to access newer features.
The upgrade also strengthens several validation rules within the ledger, including a rule that prevents the reuse of cryptographic identity keys by multiple stake pools.
As detailed in a Friday development report from Input Output, "In addition to improvements to Plutus and enhancements to the Plutus Cost Model, this upgrade lays the groundwork for the upcoming Dijkstra era hard fork, which will integrate Ouroboros Leios into Cardano." Ouroboros Leios is a scaling proposal aimed at significantly increasing transactions per second while maintaining the protocol's security standards, with an expected rollout in late 2026.
Van Rossum serves as the procedural foundation for the Ouroboros upgrade, both through the ledger enhancements and the precedent established for community-driven upgrades.
This hard fork is named after Max van Rossem, a contributor to Cardano's governance who played a key role in developing the network's constitution and passed away in October 2025.
Implications for Cardano Users
For casual ADA holders, there are no immediate changes in how they hold or spend their tokens. Transactions remain unchanged, wallets do not require updates, and fees for sending ADA stay the same. The upgrade does not impact the user experience directly.
However, the real advantages will emerge as new applications are developed on Cardano. The improvements in Plutus will lower the operational costs of smart contracts, which underpin various on-chain services from DeFi applications to NFT marketplaces.
Users incur fees with each interaction with these applications, which partly reflect the computational demands of the smart contracts. Reduced execution costs could allow developers to offer lower transaction fees, although they will need to update their contracts to realize these savings.
In the broader context, the Van Rossum upgrade signifies a shift in governance control. Unlike many blockchains where a core team dictates the development roadmap, this hard fork demonstrates that Cardano's stakeholders can independently approve protocol changes without the founding team's direction. For ADA investors, this distinction highlights a transition from merely holding tokens on a centrally managed network to having a formal role in influencing its direction.
The tangible benefits for users will come with the future Leios upgrade, which aims to drastically enhance the network's transaction processing capabilities, resulting in faster confirmations and greater capacity during peak usage periods.
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Gate Leads Spot Market Share Gains as CEX Volumes Rise for First Time in Five Months
Gate Leads Spot Market Share Gains as CEX Volumes Rise for First Time in Five Months
CEX trading volumes rose for the first time in five months in June, with spot climbing 15.3% to $1.11T and RWA perpetual volumes surging to a record $311B.
By CoinDesk ResearchJul 13, 2026CEX trading volumes rose for the first time in five months in June, with spot climbing 15.3% to $1.11T and RWA perpetual volumes surging to a record $311B.
Why it matters:
CEX trading volumes rose for the first time in five months in June, with spot climbing 15.3% to $1.11T and RWA perpetual volumes surging to a record $311B.
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