Cardano’s Van Rossem arduous fork was enacted in epoch 644, with GovTool and Koios exhibiting protocol model 11.0.
The scheduled epoch boundary was 21:44:51 UTC, whereas the primary checked block and GovTool enacted_time had been 21:53:13 UTC.
Koios confirmed 13 checked epoch-644 blocks at protocol 11.0, with continuity restricted to that sequence.
July 18, 2026 (Crypto-Information.Web) – Cardano’s Van Rossem arduous fork was enacted in epoch 644, with governance and community information exhibiting mainnet operating protocol model 11.0 after the scheduled July 18 epoch boundary.
Direct GovTool Outcomes information confirmed the hard-fork initiation motion was enacted in epoch 644 with a goal of main model 11 and minor model 0, whereas Koios epoch-644 parameters confirmed the lively protocol model as 11.0.
The timing report has two separate factors. Based on Intersect’s improve web page, Intersect, Cardano’s member-based ecosystem group coordinating the improve, scheduled the epoch boundary for 21:44:51 UTC on July 18. Koios epoch information positioned the primary checked epoch-644 block at 21:53:13 UTC, and GovTool listed the identical time as enacted_time. That distinction separates the deliberate epoch begin from the primary checked post-fork block timestamp within the information.
Koios block information confirmed 13 checked epoch-644 blocks from top 13695759 via 13695771. The sequence carried protocol 11.0 all through and confirmed matching dad or mum hashes between consecutive blocks, linking every block to its predecessor. That helps continuity solely inside the checked set.
What the Van Rossem arduous fork modified
Based on Intersect’s improve overview, protocol model 11 provides Plutus smart-contract modifications together with ledger and node updates. GovTool and Koios present the post-event foundation for the epoch-644 standing and lively protocol model reported right here.
Cardano’s June background submit described Van Rossem as a part of a rollout that included governance actions and testing on Preview and Preprod earlier than mainnet. The mainnet standing on this story comes from the later GovTool and Koios checks after the epoch change.
The improve is a tough fork, a coordinated change to protocol guidelines. Crypto-Information.Web’s arduous fork mechanics explainer covers the final course of, whereas this story stories the Cardano-specific post-event standing from GovTool and Koios.
Consumer steering
Intersect’s improve FAQ mentioned Van Rossem doesn’t require token migration. The FAQ additionally mentioned token holders don’t have any particular motion past holding wallets and instruments up to date.
The standing declare covers governance enactment, lively protocol model 11.0 in epoch 644 and continuity for the checked 13-block Koios sequence. It doesn’t cowl change, pockets, operator or person expertise throughout the community.
Reporting by Zoran Spirkovski; Enhancing by Zoran Spirkovski
Sources
GovTool Outcomes – Proprietor: Cardano GovTool Outcomes. Supported declare: hard-fork initiation motion identification, enacted_epoch 644, enacted_time 21:53:13 UTC and goal protocol model 11.0. URL: https://outcomes.mainnet.gov.instruments/governance-actions/fdd468da5cc4ac8431dcd7e2b3211666c73bc229f85879469f67f1d9d51d344d?index=0
Koios epoch parameters – Proprietor: Koios. Supported declare: lively epoch-644 protocol_major 11 and protocol_minor 0. URL: https://api.koios.relaxation/api/v1/epoch_params?_epoch_no=644
Intersect improve web page – Proprietor: Intersect. Supported declare: Van Rossem schedule, scheduled epoch-boundary time and Intersect’s coordinating function. URL: https://www.intersectmbo.org/information/cardano-upgrade-van-rossem-hard-fork
Koios epoch information – Proprietor: Koios. Supported declare: epoch 644 start_time 21:44:51 UTC and first_block_time 21:53:13 UTC. URL: https://api.koios.relaxation/api/v1/epoch_info?_epoch_no=644
Koios block_info – Proprietor: Koios. Supported declare: checked 13-block epoch-644 sequence, protocol 11.0 on these blocks and parent-hash continuity inside that set. URL: https://api.koios.relaxation/api/v1/block_info
Intersect improve overview – Proprietor: Intersect. Supported declare: source-described protocol model 11 scope, together with Plutus, ledger and node modifications. URL: https://cardanoupgrades.docs.intersectmbo.org/van-rossem-upgrade/van-rossem-upgrade-overview.md
Cardano background submit – Proprietor: Cardano. Supported declare: Van Rossem rollout background, governance-action context and Preview and Preprod testing context earlier than mainnet. URL: https://cardano.org/information/2026-06-16-van-rossem-hard-fork/
Intersect improve FAQ – Proprietor: Intersect. Supported declare: no-token-migration steering and user-action boundary for wallets and instruments. URL: https://cardanoupgrades.docs.intersectmbo.org/van-rossem-upgrade/van-rossem-upgrade-faq.md
