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Weekly development report as of 2026-09-11
Olga Hryniuk
Weekly development updatesDevelopment+ 1

Weekly development report as of 2026-09-11

CORE TECHNOLOGY This week, the consensus team made several improvements to the Leios prototype. They rewrote the download decision logic so nodes bound both the time and memory spent on pending downloads, prioritize the newest endorser blocks, and avoid saturating the same peer with concurrent requests. They also added a transaction cache so nodes don't re-...
0 up votes and 0 down votes. Total score
Weekly development report as of 2026-09-04
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-09-04

CORE TECHNOLOGY Last week, the performance and tracing team benchmarked the Cardano node v.11.1.0 and analyzed both release and pre-release performance. The benchmarks showed reduced process CPU usage, alongside an increase in resident set size, which is being addressed in the v.11.1.1 patch release. The team also enhanced beacon benchmarking with metrics ...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-08-28
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-08-28

CORE TECHNOLOGY This week, the consensus team resolved an issue with the attack in the Leios prototype targeting how nodes announce endorser blocks, which had been causing honest nodes to disconnect from each other (#2179). They also extended db-analyser to read Leios chains, enabling the tool to replay a chain and report the cost of applying each block, in...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-08-21
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-08-21

CORE TECHNOLOGY This week, the ledger team continued advancing Leios support by extending the pool distribution to include the corresponding BLS key and per-pool BLS-attributed stake, making BLS-related pool information available wherever pool distribution data is consumed. The team also began groundwork for a broader refactor of predicate failures toward ...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-08-14
Olga Hryniuk
Weekly development updatesStatistics

Weekly development report as of 2026-08-14

CORE TECHNOLOGY This week, the consensus team released prototype-2026w32 and continued advancing Leios prototype development. The node now generates and sends endorser-block announcements to peers, which is the first step toward full announcement-based diffusion. The team also added validation to reject malformed Dijkstra blocks and fixed several testnet ob...
2 up votes and 0 down votes. Total score
Weekly development report as of 2026-08-07
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-08-07

CORE TECHNOLOGY This week, the performance and tracing team completed benchmarks for the Van Rossem hard fork, covering new Plutus execution budgets, internals, and a PlutusV3 baseline shift. The team also finalized the Hermod package restructure, added cardano-config support to trace-dispatcher, and delivered the genesis cache overhaul and protocol version...
1 up votes and 0 down votes. Total score
Weekly development update as of 2026-07-31
Olga Hryniuk
DevelopmentStatistics+ 1

Weekly development update as of 2026-07-31

CORE TECHNOLOGY This week, the consensus team released prototype-2026w29 (#996), enabling the node to certify and announce endorser blocks inside the forging loop – expected to raise the certification rate and throughput (#2105). They also improved testnet stability by addressing an issue with Dijkstra block handling (#2140), updated the prototype dashboard...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-07-24
Olga Hryniuk
Development

Weekly development report as of 2026-07-24

CORE TECHNOLOGY Cardano's engineering is now decentralized. Since 2024, IO and its partners have been managing a transition that will conclude in 2027, resulting in several independent firms maintaining at least three Cardano node implementations in Haskell, Rust, and Go, alongside a complete set of formal specifications overseen by member-based organizatio...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-07-17
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-07-17

CORE TECHNOLOGY This week, the consensus team continued to stabilize the Leios testnet, releasing two prototype builds – prototype-2026w27a and prototype-2026w28 – and fixing several bugs identified during testnet runs. The team also implemented a voting dashboard to improve Leios observability, showing how endorser blocks are voted on and certified. They a...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-07-10
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-07-10

CORE TECHNOLOGY This month, the performance and tracing team removed the legacy iohk-monitoring-based tracing backend from cardano-node, eliminating approximately 11,000 lines of outdated code across 15 modules and nine transitive build dependencies. The team also removed RTView from cardano-tracer, with its functionality now fully covered by the Grafana da...
2 up votes and 0 down votes. Total score
Weekly development report as of 2026-06-19
Olga Hryniuk
Weekly development updatesDevelopment+ 1

Weekly development report as of 2026-06-19

CORE TECHNOLOGY This week, the consensus team focused on Mithril integration: nodes running on an on-disk backend can now export snapshots in the portable in-memory format, allowing Mithril signers to obtain the agreed format directly from the node. They also implemented a new snapshot policy that makes ledger state snapshot timing predictable using agreed-...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-06-12
Olga Hryniuk
developmentWeekly development updates+ 1

Weekly development report as of 2026-06-12

SMART CONTRACTS This week, the Cardano High Assurance team has finalized a beta version of the property-based testing tool and is pursuing internal testing. The team introduced a testing interface to easily explore a vast variety of scenarios, automated positive testing to verify the contracts meet their specifications, negative testing to ensure the testin...
2 up votes and 0 down votes. Total score
Weekly development report as of 2026-06-05
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-06-05

CORE TECHNOLOGY This week, the performance and tracing team published release benchmarks for node v.11.0.1 and ran feature benchmarks for TxSubmissionLogicV2 and compiler version comparisons. On the development side, the team removed legacy tracing and completed work on genesis caching and post-processing infrastructure. The cardano-tracer HTTP API for metr...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-05-29
Olga Hryniuk
Weekly development updatesDevelopment+ 1

Weekly development report as of 2026-05-29

CORE TECHNOLOGY This week, the ledger team focused on the Plutus context performance work: the validation rules now consume precomputed information stored in StAnnTx rather than recomputing it, completing an optimization arc spanning several cycles. In parallel, work began on removing the legacy Coders machinery from the codebase, with several call sites al...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-05-22
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-05-22

CORE TECHNOLOGY This week, the consensus team delivered the first voting capability in the Leios prototype: nodes now diffuse votes over a dedicated mini-protocol, and a voting thread casts votes on completed endorser-block closures. This forms the foundation for committee-based endorsement and is exercised by new threadnet property tests (#1963). The team...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-05-15
Olga Hryniuk
Weekly development updatesdevelopment+ 1

Weekly development report as of 2026-05-15

CORE TECHNOLOGY This week, IO’s core technology teams released Cardano node v.11.0.1, the first release to support the protocol version 11 intra-era hard fork. This enables the upgrade to protocol version 11 once the hard fork governance action has been voted on by stake pool operators, delegated representatives, and the constitutional committee, and enacte...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-05-08
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-05-08

CORE TECHNOLOGY Over the past few weeks, the consensus team has continued working on the Leios prototype development as part of the treasury funding initiative 4. The team completed migrating endorser-block announcements and certification flags from the ledger block to the Praos header, aligning the prototype with the original Leios design (#1978, ouroboros...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-05-01
Olga Hryniuk
DevelopmentWeekly development updates+ 1

Weekly development report as of 2026-05-01

CORE TECHNOLOGY IO's treasury proposals are live on the proposals website. For context on previously funded work, the team published the Q4 2025 – Q1 2026 delivery report, which covers what IO delivered for Cardano under the previous funding cycle. To support the community in reviewing the proposals, IO has been hosting a series of X Spaces. A general kick...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-04-24
Olga Hryniuk
development

Weekly development report as of 2026-04-24

CORE TECHNOLOGY This week, IO’s treasury proposals went live on the proposals website. The teams submitted nine proposals focusing on performance, scalability, and capability improvements, with a funding ask of just under 50% of last year’s and a clear focus on delivery. Delegated representative (DRep) voting is open now and closes on May 24. Explore the ...
1 up votes and 0 down votes. Total score
Weekly development report as of 2026-04-17
Olga Hryniuk
Weekly development updatesDevelopment+ 1

Weekly development report as of 2026-04-17

CORE TECHNOLOGY This week, teams at Input Output are finalizing 2026 treasury proposals for continued Cardano development. Nine proposals – spanning core protocol maintenance, consensus, upgrades, scaling, developer experience, smart contracts, and more – support a defined body of work, with clear ownership, timelines, and a direct link to Cardano’s 2030 vi...
1 up votes and 0 down votes. Total score
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