GoCheckMyCrypto.comCardano upgraded via token-holder vote, not founders, for the first time
Cardano upgraded to protocol version 11 on July 18, 2026, via onchain governance voting by token holders and pool operators for the first time, ratified July 13. The upgrade lowers smart contract costs and sets groundwork for a scalability overhaul expected later in 2026.
Cardano activated the Van Rossem hard fork on July 18, 2026 at 21:44 UTC, moving from protocol version 10 to version 11. The upgrade was the first in the network's history to be proposed, debated, and ratified entirely through onchain governance rather than by Input Output, the founding developer. Ratification occurred on July 13, 2026, according to CoinDesk's reporting.
The vote split governance power three ways. Delegated representatives, who cast votes on behalf of ADA token holders, approved the upgrade 78.97% in favor, clearing the 60% threshold required. The Cardano Constitutional Committee unanimously agreed the fork complied with the network's written constitution, with all seven members voting in favor when five affirmatives were required. But pool operators, the infrastructure layer that actually runs nodes and produces blocks, approved the upgrade by the narrowest margin: 53.02%, according to CoinDesk.
The network required at least 85% of stake pools by active stake to run compatible node software before the fork could proceed. Network telemetry showed roughly 93% of block production already running version 11 code heading into activation. Van Rossem is an intra-era hard fork, meaning it stays within Cardano's current governance-focused era and does not alter transaction structure or wallet behavior. For someone casually holding or spending ADA, transactions, wallets, and fees remain unchanged, per CoinDesk's reporting.
The upgrade adds new capabilities to Plutus, Cardano's smart contract platform, unifying built-in functions across three versions of the language. These Plutus changes lower the costs of running smart contracts, meaning applications built on Cardano can charge less per transaction. However, developers must actively rebuild their contracts to capture the savings; cost reductions are not automatic. The upgrade also tightens ledger validation rules, including one guaranteeing that no two stake pools can reuse the same cryptographic identity key.
Van Rossem lays groundwork for Ouroboros Leios, a scaling upgrade expected later in 2026 that aims to sharply increase transactions per second without weakening security guarantees, according to CoinDesk. Input Output stated that the next upgrade, the Dijkstra era hard fork, will introduce Ouroboros Leios to Cardano, though this remains an announcement not independently verified. The hard fork is named for Max van Rossem, a Cardano governance contributor who helped shape the network's constitution and died in October 2025.
The pool operator vote margin signals potential governance fragility. Founders can no longer guarantee their preferred outcomes; infrastructure operators may diverge from token-holder preferences. The upgrade also requires ecosystem participants to coordinate on software upgrades and timelines, adding operational complexity compared to founder-directed hard forks.
Delegated representatives voted 78.97% in favor; pool operators approved by the narrowest margin at 53.02%.
Watch whether developer adoption of Plutus improvements proceeds quickly enough to realize cost savings, and whether onchain governance approval rates stabilize above 50% for future upgrades. If Ouroboros Leios delivers significant throughput gains when it launches, Van Rossem becomes a credible waypoint toward scalability. If pool operators continue to diverge from token-holder votes, governance fragility becomes the binding constraint on Cardano's evolution.
And that's the way it is.
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