Cardano Developers Announce Timeline for Dijkstra Upgrade Deployment

cryptonews.ruPublished on 2026-08-17Last updated on 2026-08-17

Abstract

The developers of Cardano have outlined the timeline for deploying the Dijkstra upgrade, aimed at enhancing the network's functionality and user experience. The first phase, scheduled for completion by the end of this year, will initially focus on implementing Ouroboros Linear Leios (CIP-164) to increase transaction throughput via Supplementary Endorser Blocks. It also includes protocol changes for nested transactions (CIP-118), protective scripts (CIP-112), extended account addresses (CIP-159), and simplified staking reward withdrawals (CIP-181). A public testnet, Musashi Dojo, was launched on June 23rd for community testing before mainnet deployment. The second phase is planned for Q2 2027 and involves deploying Ouroboros Peras (CIP-140) to accelerate transaction processing through an additional staking pool voting layer. This will be preceded by extensive testing, including a preview hard fork with a two-week testing window for Staking Pool Operators (SPOs) to evaluate the voting mechanism and transaction delays, followed by deployment to a pre-production network for further testing. Final activation on the mainnet will require approval from Delegated Representatives (DReps), SPOs, and the Constitutional Committee, with no preliminary launch date announced yet. This follows the recent July activation of the Van Rossem hard fork, which reduced Plutus smart contract costs to prepare for future upgrades.

Initially, developers want to focus on the Ouroboros Linear Leios feature (CIP-164), designed to increase Cardano's transaction processing throughput via Supplementary Endorser Blocks.

The first phase of the Dijkstra upgrade also includes a number of protocol changes: nested transactions (CIP-118) — where several incomplete operations are bundled together —, guard scripts (CIP-112), extended account addresses (CIP-159), and a simplified method for withdrawing staking rewards (CIP-181). The goal of these changes: to strive to improve the functionality and usability of the Cardano network. The first phase is planned to be completed by the end of the year.

However, before implementing these changes on the mainnet, developers and network participants need to test them. For this purpose, on June 23rd, the Cardano team launched the public Ouroboros Leios testnet, Musashi Dojo.

The second phase is scheduled for the second quarter of 2027 and includes the deployment of Ouroboros Peras (CIP-140) — an update intended to accelerate transaction processing in the blockchain. This will introduce an additional voting layer in the staking pool. Cardano's creators plan to release a Peras-compatible node for testnet operators, which will allow Staking Pool Operators (SPOs) to prepare their infrastructure for the upcoming hard forks.

Next, developers plan to conduct a Preview hard fork, opening a first two-week testing window for SPOs. Staking pool operators will be allowed to test the voting mechanism's operation and evaluate transaction latency. After preliminary testing, Cardano developers will move Peras to a pre-production network, where a second testing window will open for SPOs. This stage will last approximately one to two more weeks.

Additional tests will give developers a chance to identify and fix issues before the update is launched on the mainnet. Its activation will require approval from Delegated Representatives (DReps), Staking Pool Operators, and the Constitutional Committee. Cardano developers did not even give a preliminary launch date for the update.

In July, the Cardano team activated the Van Rossem hard fork, aimed at reducing the execution cost of Plutus smart contracts and preparing the blockchain for future upgrades.

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Related Questions

QWhat is the primary goal of the Ouroboros Linear Leios (CIP-164) feature in the first phase of the Dijkstra upgrade?

AThe primary goal of the Ouroboros Linear Leios (CIP-164) feature is to increase Cardano's transaction processing throughput through Supplementary Endorser Blocks.

QWhen is the first phase of the Dijkstra upgrade planned to be completed?

AThe first phase of the Dijkstra upgrade is planned to be completed by the end of the current year.

QWhat is the main purpose of the Ouroboros Peras (CIP-140) update planned for Q2 2027?

AThe main purpose of the Ouroboros Peras (CIP-140) update is to accelerate transaction processing in the blockchain by introducing an additional voting layer in the staking pool.

QWhat is the role of the public testnet Musashi Dojo, launched on June 23?

AThe public testnet Musashi Dojo was launched to allow developers and network participants to test the new protocol changes, including those from the Dijkstra upgrade, before deploying them to the mainnet.

QWho needs to approve the final activation of the Peras update in the mainnet?

AThe final activation of the Peras update in the mainnet requires approval from Delegated Representatives (DReps), Stake Pool Operators (SPOs), and the Constitutional Committee.

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