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 kickoff session launched the process, followed by two dedicated spaces covering four proposals: Cardano upgrades, developer experience, Cardano High Assurance, and Plutus. The April 29 session covered Leios and layer 2 scalability proposals. Follow IO on X for more details on the upcoming spaces.

Delegated representative (DRep) voting is open now and closes on May 24. Explore the full set of proposals.

The ledger team progressed work on ledger rules for nested transactions and on translating newer features into the Plutus context. They introduced a change to how the Plutus context is prepared for each transaction entering the mempool – when fully integrated, this is expected to result in meaningful performance improvements.

Additionally, the team transferred all ledger state queries from the consensus component to the ledger component and introduced an initial stage of streaming injection functionality. This will be used for testing and benchmarking, particularly for on-disk storage scenarios where large volumes of data need to be injected into the ledger state without affecting operating memory.

Finally, they fixed several CDDL bugs identified using the new AntiGen and cuddle tools, and improved examples and facilities for golden tests.

WALLETS AND SERVICES

Lace mobile is now available on Android, with iOS support to follow. The release brings core wallet functionality to mobile – sending and receiving assets, staking, swapping, and DApp connectivity – without requiring a desktop. This release also marks the start of Lace 2.0, a step toward a multi-chain experience across Cardano and Bitcoin.

SMART CONTRACTS

This week, the Cardano High Assurance team demonstrated two new tools that together enable automatic correctness proofs for Cardano smart contracts, from source language down to the CEK machine, against the actual ledger rules.

The first, PlutusCoreBlaster, is a complete executable formalization of the Cardano CEK machine, UPLC, and Plutus Core built-ins in Lean 4. Any UPLC program can be imported, and correctness theorems can be written against its actual execution – not a model, but the real implementation. This means developers can use the UPLC output from any surface language (Aiken, Plinth, Plutarch, or others) without needing to model their contract separately.

The second, CardanoLedgerAPIBlaster, is an executable formalization of V1, V2, and V3 script contexts and ledger rules, reflecting the actual design choices made by the node – consistent with what runs on preview, pre-production, and mainnet.

To demonstrate what the tooling unlocks, the team formalized the sellNFT contract using CardanoLedgerAPIBlaster and ran Blaster on it. The proof revealed a double-satisfaction vulnerability. Combined, the two tools give developers a complete path: write a contract, import it, state your properties, and Blaster automatically proves them against the real CEK machine and ledger rules.

Join the team's Discord discussions and see the 2026 funding proposal to extend this work on the proposals website.

SCALING

Over the past few weeks, the Leios team improved the prototype's storage system, which had been affecting the test suite and proto-devnet runs, restoring stability in both environments. They published the first ledger throughput benchmarks for processing transactions with and without validation, confirming the expected speedup from reapplication over initial validation. More coverage will be needed, but the team is cautiously optimistic about this crucial aspect that underpins the Leios protocol's security. 

The team also began work on replacing the current 'always certified' shortcut with real vote traffic, while also aiming to simplify the committee selection scheme, allowing for smaller votes, certificates, and faster verification. Additionally, they updated the prototype to place endorser-block announcements in the Praos block header, aligning the implementation with the protocol specification. The team updated the cost estimate analysis and interactive tool to use the CIP-164 Linear Leios protocol, providing better guidance on expected operational costs for SPOs.

Finally, the liveness proof for the Agda formal specification – covering honest chain growth and chain quality – was submitted for review, closing the last major open gap in the formal specification.

The Mithril team released the 2617.0 distribution – read the developer blog for more details. This version bumps the Mithril signer to 1.0.0, marking it as production-ready on the release-mainnet network, adds support for Cardano node v.10.7.1, and includes statically built binaries as well as various bug fixes and improvements.

The team also completed the golden tests for the recursive SNARK circuit prototype and enhanced witness preparation for the non-recursive prover in the STM library. They continued work on implementing a SNARK-friendly protocol message, the data encoding and state-transition tests for the recursive SNARK circuit prototype, and detecting SNARK circuit modifications in the STM library. Additionally, they completed the extraction of the Merkle tree modules into a new crate.

Finally, the team implemented support for multiple tiers of tests in CI, refactored the crates publication, and investigated test flakiness.

VOLTAIRE

Voting in the Intersect election committees concluded on Friday, May 1, at 12 noon UTC. With 105 candidates for 37 available seats, the election was hotly contested. An independent audit has commenced and will continue over the weekend. Results will be announced on Monday, May 4, at noon UTC.

RESEARCH

This week, the research team has submitted their treasury proposal and are preparing their DRep Advocacy campaign, which includes content and events to explain the impact and value of the workstreams in the IOR proposal.


Weekly development report as of 2026-05-01

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 full set of proposals.

This week, the consensus team continued Leios prototype development as part of the 2025 Treasury Funding Initiative 4 (Leios implementation). They fixed a crash in the prototype’s fetch decision logic (#1996), added cumulative transaction bytes to the ledger state and exposed them as a Prometheus metric – giving operators a direct measure of throughput on the proto-devnet (#1988, cardano-node#6536) – and added a confirmed-transaction throughput panel to the proto-devnet dashboard (ouroboros-leios#859). They also hardened the prototype’s test suite around endorser-block inclusion to make it easier to extend to upcoming features such as voting (#1971), and started aligning the prototype with the original Leios design by migrating the endorser-block announcement and certification flag from the ledger block into the Praos header (ouroboros-leios#837). Additionally, the team is investigating a performance bug observed during the March demo, in which the time between forging and storing an endorser block can stretch to minutes, disrupting protocol operation (ouroboros-leios#844). A work-in-progress snapshot of the SQLite latency investigation from March was shared, which informs Leios-related storage work (ouroboros-leios#863), and the logbook update from the 2026-04-09 consensus office hours was posted (ouroboros-leios#854).

As part of the 2025 Treasury Funding Initiative 17 (maintenance and support), the team defined sensible default values for PerasParams, simplifying configuration for downstream users (#1998). On the documentation side, they added an explanation page describing the data flow between consensus components (#1955), published a first iteration of an explanation page covering the Ouroboros Praos consensus protocol (#1960), and removed leftover documentation stubs while cleaning up the sidebar on the consensus website (#1956). Finally, they released ouroboros-consensus-3.0.1.0 (#1987), bumped the node’s consensus dependency to 3.0.1 to propagate recent improvements to cardano-node (cardano-node#6533), and re-landed the rework of snapshotFromIS as part of ongoing improvements to ledger snapshotting (#1992).

SMART CONTRACTS

This week, the Plutus team made several improvements to the UPLC executable. They added support for hex-encoded scripts and blueprint JSON as inputs, with the ability to optimize all scripts they contain. They also added the ability to certify optimizations and generate a certifier report for each optimized validator, addressed several flags to give users control over optimization behavior, and enabled evaluation of a script with user-supplied input before and after optimization.

The UPLC executable is included with every Plutus release. While it supports a range of use cases, its most immediately useful feature for most developers is script optimization. Preliminary testing suggests that applying these optimizations to recent mainnet scripts yields, on average, a 10% reduction in execution cost and a 2% reduction in script size. User documentation for the UPLC executable is currently in progress.

The Cardano High Assurance team delivered a completely formalized example from the Invariant0 Capture-the-Flag, showing how users can formalize their own smart contracts and discover vulnerabilities.

SCALING

This week, the Mithril team completed production readiness preparations for circuit keys and trusted setup in the STM library. They continued work on the golden tests for the recursive SNARK circuit prototype, enhancements to witness preparation for the non-recursive prover, deterministic proof generation in golden tests, and data encoding and state transition tests for the recursive SNARK circuit prototype.

The team also completed the explorer update for Cardano blocks and transactions, the documentation of the Cardano blocks and transactions signature on the website, and the plan to sunset Cardano transaction certification. They continued work on the upgrade to Cardano node v.10.7 and on the preparation of the next distribution, 2617.

Finally, they investigated an issue with signer registration in the SNARK prover, fixed flaky end-to-end tests, and worked on supporting multiple tiers for CI tests.

VOLTAIRE

In the latest news on the Intersect committee elections, 105 candidates are standing for the 37 available seats.

Voting is underway and continues until 12 noon UTC on Friday, May 1.

RESEARCH

This week, the research team is working on their treasury proposal.

Read more about the team’s strategic collaboration with the Archimedes Research Unit in Greece in the latest blog post.


Weekly development report as of 2026-04-24

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 vision. Once published, they will be accessible for community review and voting.

Starting next week, X Spaces sessions will cover each proposal group and its related development initiatives. Announcements, along with the treasury website launch, will be shared via IO’s X account.

Last week, the consensus team implemented Leios endorser block (EB) inclusion in the consensus layer, adding EB announcement and certification tracking to blocks, along with a SQLite-based backend for querying EBs and certificates (#1921). They also progressed work on UTXO-HD by refactoring database initialization by changing mkOpenState in ImmutableDB and VolatileDB (#1917), and improved performance by caching transaction differences on first execution, addressing a hotspot observed during transaction revalidation on stressed nodes (#1954).

Additionally, the team released ouroboros-consensus v2.0.0.0 and v3.0.0.0, integrated ouroboros-network 1.1.\*, and incorporated the latest consensus packages into cardano-node for the upcoming node v.10.7 release. Finally, they fixed a flaky ChainDB StateMachine test related to iterators (#1948) and updated the consensus documentation by replacing the ‘Introduction’ page with a comprehensive system overview, including a C4 context diagram and clarifications on code organization and era evolution (#1950).

The ledger team focused on preparing for the Cardano node v.10.7.0 release, which includes the fixes and features required for the upcoming Van Rossum hard fork to protocol version 11. They also prepared for a subsequent v.10.7.1 release to address performance issues identified in the ledger component of v.10.7.0.

The team also identified and fixed several issues, primarily in the CDDL specification, supported by the recently integrated AntiGen tool for negative property testing of ledger serialization.

Additionally, the team introduced optimizations that improve chain validation and replay performance, and enhanced the ledger API used by consensus, resulting in clearer and safer boundaries between components.

For CIP-118 (nested transactions), they defined two additional ledger rules, UTXO and UTXOW, enabling transaction processing in the Dijkstra era to account for sub-transactions. For CIP-165 (canonical ledger state), they applied fixes to the constitutional committee representation.

WALLETS AND SERVICES

After supporting the Midnight mainnet launch, the Lace team is now focused on delivering Lace 2.0 for the extension and working on the mobile version.

SMART CONTRACTS

The Cardano High Assurance team delivered a complete formalization of the Cardano Ledger API for Lean 4. Together with the PlutusCore, UPLC, CEK Machine formalization, and the automated formal reasoning backend, Blaster, this gives anyone in the community the ability to express and formally verify smart contracts without needing to write a formal proof.

The team will be working on a set of tutorial examples across several possible use cases to guide any new user through verifying their smart contract.

SCALING

This week, the Mithril team completed several SNARK-related tasks. They created a new module for the recursive SNARK circuit in the STM library, added support for test mode, refactored the bytes codec for forward and backward compatibility, synchronized updates from the non-recursive circuit prototype, prepared a testing plan for the IVC circuit, enhanced witness preparation for the non-recursive prover, and added golden tests for the recursive SNARK circuit prototype.

They also completed partial block range support, security parameter offset signing, and the WASM client implementation for Cardano blocks and transactions. In addition, they continued work on the explorer update and on documenting Cardano block and transaction signatures on the website. The team also progressed the upgrade to Cardano node v.10.7 and completed DMQ node updates to 0.4.1.0 and 0.4.2.0.

Finally, they cross-compiled Windows builds from Linux using Nix, fixed node build failures in Hydra CI, and investigated a stoppage of SNARK aggregator certification on the dev network.

See this technical update for more details.

VOLTAIRE

In the latest news on the Intersect committee elections, candidate applications closed today, Friday, April 17, with more candidates than available seats in all eight committees.

Voting opens on Monday, April 20, and runs until May 1. Each member’s vote carries the same weight, regardless of the amount of ada held. Each member is entitled to one vote for each available seat in each committee. For example, if there are five seats in a committee and seven candidates, a member can select five candidates. The same rules apply to each committee. Members can change their votes at any time until noon UTC on May 1.

To vote, log in to the Intersect members’ area, select ‘Voting events’, and follow the prompts.

RESEARCH

This week, the Research team is proud to announce a new strategic collaboration with the Archimedes Research Unit of the Athena Research Center (Athena RC), in Athens, Greece. This new partnership includes a new blockchain technology laboratory (BTL), which aims to advance research at the intersection of decentralized AI, blockchain, and private healthcare.

The new laboratory will drive research into how blockchain can act as a secure layer for artificial intelligence by merging privacy-enhancing technologies, game theory, and distributed ledgers to decouple data access from data insight. 

We look forward to sharing the innovations that will emerge from this exciting partnership.


Weekly development report as of 2026-04-17

CARDANO HIGH ASSURANCE

This week, the Cardano High Assurance team released a complete formalization of Plutus Core, UPLC, and CEK machine in Lean 4, called PlutusCoreBlaster.

Combined with the automated formal reasoning backend, Blaster, developers can now formally verify that the compiled UPLC of their smart contracts meets the intended business requirements and security objectives.

The team is working hard to deliver a complete set of ledger rules and formalization in Lean 4, making it even easier to formally verify smart contracts through predefined helper functions.

SMART CONTRACTS

The Plutus team delivered a set of improvements to Plinth, focusing on compiler usability and language efficiency.

On the compiler side, they introduced new type checker plugins that preserve source locations and detect unsupported Haskell features, resulting in clearer and more actionable error messages. They also added a driver plugin that automatically applies the required compiler flags and enables the Strict extension.

In terms of language improvements, the team enhanced AsData to generate a destructor function for data types, providing a more efficient approach for matching on sum types compared to pattern synonyms.

Additionally, they implemented a new UPLC optimization, transforming applications with three or more arguments into case-constr form to improve execution efficiency.

Updates to the Plinth user guide are in progress, with further details currently available in the associated pull request descriptions.

SCALING

This week, the Mithril team completed the full review of the recursive SNARK circuit prototype, the impact assessment of SNARK on Mithril protocol security, and support for multiple proof systems in the STM library. They also completed SNARK proof generation and verification in end-to-end tests. They began work on the recursive SNARK circuit, including creating a new module in the STM library, and worked on a testing plan for the IVC circuit and production readiness for circuit keys and trusted setup. They also supported test mode for the recursive circuit and continued refactoring the STM library's byte codec.

Additionally, they completed the client CLI implementation for Cardano blocks and transactions and made progress on partial block range support, security parameter offset signing, and the explorer update for Cardano blocks and transactions.

Finally, the team completed the reqwest upgrade to 0.13 and continued work on the Cardano node upgrade to 10.7 and the DMQ node update to 0.4.1.0.

VOLTAIRE

Only seven days left to apply for the 2026 Intersect committee elections – if you've been thinking about it, now is the time to act.

Whether your background is technical, operational, community-focused, strategic, or regional, your perspective could help strengthen Cardano. Previous committee experience isn’t essential if you’re considering applying. What matters most is a willingness to contribute, collaborate, and help improve the ecosystem.


Weekly development report as of 2026-04-10

CORE TECHNOLOGY

This week, the performance and benchmarking team ran compiler benchmarks on node v.10.6.2 and evaluated new tracing features. They also began developing a new project – tx-centrifuge– a transaction submission service designed to generate extremely high, continuous workloads.

Regarding infrastructure, the team addressed minor maintenance tasks, including fixing profiled Nix builds for local benchmarking. In tracing, they separated the new tracing system into its own project, ‘Hermod Tracing’, and released a new library, cardano-timeseries-io, which accumulates metrics into queryable time series.

For Leios, the cardano-recon-framework (formerly the LTL trace verifier) has now been integrated and is in use. Finally, within node diversity, the formal trace schema definition is nearing merging, while trace forwarding in native Rust remains on hold. 

WALLETS AND SERVICES

Midnight wallet is now available in Lace. This marks a significant milestone for the team, bringing Midnight mainnet access directly into the Lace wallet experience. Users can now create a Midnight wallet, hold Midnight assets, and begin exploring a new model of blockchain privacy alongside their existing Cardano assets.

SCALING

This week, the Mithril team completed wiring the SNARK proof into the aggregate signature and successfully activated the SNARK prover on a developer Mithril network. They also continued the full review of the recursive SNARK circuit prototype, the impact assessment of SNARK on Mithril protocol security, and SNARK proof generation and verification in end-to-end tests.

Additionally, the team completed the implementation of examples for Cardano blocks and transactions and continued progressing the client CLI implementation, partial block range support, and signing of the security parameter offset. They also updated the release process to anticipate unreleased versions of the Cardano node.

Finally, the team removed the legacy v1 Cardano database backend, updated the DMQ node to 0.3.0.0, and continued work on the upgrade to Cardano node v.10.7.

VOLTAIRE

Applications for the 2026 Intersect committee elections are open now and close on April 17 — so if you've been weighing it up, this is the moment to act. Five seats are available across each of seven standing committees, covering budget, civics, growth and marketing, membership and community, open source, product, and technical steering, plus two seats on the Intersect steering committee itself. Each committee plays a genuine advisory role in shaping how Cardano evolves, and a two-year term means your contribution will have real depth and continuity.

If you're still unsure whether you're the right fit, each committee is hosting both an X Space and a Virtual Hub session before the deadline — a chance to hear directly from current members, ask questions, and get a clearer sense of where your skills belong. Find and register for all sessions via the Luma calendar at luma.com/intersect-committee-elections. Full details on available seats and how to apply are on the Intersect Knowledge Base.

RESEARCH

Read more about IOR’s Professor Aggelos Kiayias, 2026 IACR Fellow, in the latest blog post.


Weekly development report as of 2026-04-03

CORE TECHNOLOGY

Over the past few weeks, the networking team supported the upcoming node v.10.7.0 release and released the new versions of ouroboros-network and cardano-diffusion.

For Leios, work remained in progress on mux egress prioritization, transaction submission v2 performance improvements and demo, and updates to the network section.

Across ouroboros-network, the team enhanced transaction submission robustness and testing, refactored the mux and socket API, added new type data to ledger peers, and made various tooling and documentation enhancements.

On the DMQ node, they completed work on signature submission v2, ledger peer integration, dependency updates, documentation improvements, and released dmq-node 0.3.0.0 pre-release. Integration with cardano-tracer remains in progress.

Finally, IOSim saw multiple improvements, including event log handling, broader cleanup, and added support for GHC 9.14.

The consensus team worked on Peras protocol development by reviewing and merging the implementation of the committee selection model, which defines how voters are chosen for fast-finality voting rounds. They also merged the node implementation that enables tracking Peras certificate progress on-chain, supporting the protocol’s chain-selection rule.

Additionally, the team released ouroboros-consensus v.1.0.0.0 and reworked internal resource management for ledger state access, improving node robustness. Finally, they fixed a minor issue in the immutable DB chunk enumeration logic affecting test coverage and integrated the networking team’s ouroboros-network v.1.0 release (#1918, #1927, #1929).

SMART CONTRACTS

This week, the Cardano High Assurance team went to Buidler Fest in Buenos Aires, organized by TxPipe. The team demonstrated the latest features of the automated formal verification tool and the coming-soon Plinth static analyzer.

SCALING

This week, the Mithril team completed several SNARK-related milestones: they finished implementing the Halo2 circuit in the STM library, completed work on SNARK aggregation primitives for creating and verifying SNARK proofs, and finalized circuit refactoring, including modularity enhancements and a switch to a transcript hash function. They also completed the technical report for the recursive Halo2 circuit. The team continued work on the full review of the recursive SNARK circuit prototype, the impact assessment of SNARK on Mithril protocol security, wiring the SNARK proof into the aggregate signature, and activating the SNARK prover in the dev networks.

They also completed implementing the new prover for Cardano blocks and transactions, the client library, and enhanced the signed entity type configuration. They continued progressing on the client CLI implementation, partial block range support, and usage examples for Cardano blocks and transactions. Additionally, they kept working on the release process improvements, the removal of the legacy Cardano database backend in the client, and the enhancement of the protocol security page on the website.

Finally, they completed static builds of Mithril nodes in CI, finalized testing of the DMQ node 0.3.0 pre-release, and updated the Midnight ZK library audit status.

The Hydra team continued progress on the partial fanout feature (#1667, #2538) and made some final changes to the directly open heads feature. They also investigated a blocker encountered during the upgrade to cardano-api v.10.21 and worked on improving snapshot resilience.

VOLTAIRE

With Intersect committee elections coming soon, now is a great time to start thinking about where you could make the most impact. Which areas of Cardano's future matter most to you – governance, budget, technical direction, ecosystem growth? There's a committee for that. 

Applications open March 30 through April 17, so take a moment to reflect on where your skills and passion align, and consider putting your name forward.

If standing for election isn't for you right now, think about who in your network might be the perfect fit. Great committees are built from great people, and you might know exactly the right one.

RESEARCH

IOR’s Professor Aggelos Kiayias has been named a 2026 Fellow of the International Association for Cryptologic Research (IACR). He is being awarded ‘for outstanding contributions to cryptographic designs, including the science and implementations of blockchains, for educational leadership, and for service to the IACR’.

The IACR is the global authority on the science of cryptology. To be named a Fellow is to join the ranks of the visionaries who built the protocols securing the modern internet. For Professor Kiayias, this recognition is a testament to a lifelong commitment to provable security. This IACR Fellowship recognizes the profound impact Professor Kiayias has had across the cryptographic landscape, most notably in the evolution of decentralized networks. 

The IOR team is also progressing on Work Package 2026 workstreams and writing accessible explainers to accompany some of the research papers.


Weekly development report as of 2026-03-27

CORE TECHNOLOGY

Over the past few weeks, the ledger team has progressed work on nested transactions by implementing an additional ledger rule. They also integrated the new testing library AntiGen into the ledger, enabling negative property testing of decoders against the CDDL specification. This improves confidence in the quality of binary decoders, both for current and future eras.

The team also progressed work on the canonical ledger state by adding one more namespace.

Finally, they reached a major milestone by releasing all ledger packages to CHaP for the upcoming cardano-node v.10.7 release, which includes the features required for the intra-era hard fork to protocol version 11.

SCALING

Mithril

This week, the Mithril team continued implementing new succinct proofs. They completed the certificate chain adaptation for the SNARK aggregate verification key, prepared the SNARK prover witness, and finalized the naming alignment as part of the SNARK circuit refactoring. They published a new dev blog detailing protocol parameter changes on mainnet. The team also continued work on modularity enhancements using gadgets and on SNARK proof verification. In addition, they advanced the full review of the recursive circuit prototype, the technical report for the recursive Halo2 circuit, and the impact assessment of SNARK on the Mithril protocol's security.

The team also continued work on the new certification for Cardano blocks and transactions, including the prover and client library implementations, completed static builds for Mithril nodes, and began enhancing support for signed entity types through configuration.

Finally, they continued testing the DMQ node 0.3.0 pre-release and worked on removing the v1 backend for the Cardano database in the client library and CLI.

Hydra

The Hydra team released version 1.3.0 and made substantial progress on the partial fanout feature (#1667, #2538). They also fixed an issue related to the high layer 2 transaction load and improved logging when running smoke tests.

Next, the team focuses on improving the structure and consistency of benchmarks to support more reliable performance analysis. They are also working on the upcoming Dijkstra era and implementing the ‘directly open heads’ feature. Finally, the team plans to upgrade to cardano-api v.10.21.


Weekly development report as of 2026-03-20

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Binance listed the NIGHT token this week and conducted an airdrop to BNB holders

The Sandstone stake pool team released Torsten, a Cardano full node written in Rust that could lower resource usage, provide faster chain syncing, and reduce hardware costs

Cardano will be a block sponsor at Consensus 2026, taking place May 5–7, 2026, in Miami

Zero deposit fees for the USDC → USDCx deposit and relay services have been extended.

CORE TECHNOLOGY

Over the past few weeks, the consensus team continued work on the Leios prototype as part of Treasury Funding Initiative 4 (Ouroboros Leios implementation). They implemented a run-threadnet CLI that allows configuring, running, and observing simulated Cardano networks. This tool enables quick local testing of multi-node setups and speeds up the investigation of implementation issues. The team also drafted a baseline design for the Leios fetch logic with bounded memory usage, addressing the challenge of efficiently fetching and managing large volumes of data while keeping resource usage within practical limits. Work will continue with an exploration of alternative storage strategies to further improve performance.

In Peras development, the team added state-machine tests for the Peras vote database, strengthening guarantees around the correctness of the voting mechanism.

They also delivered several node improvements as part of Treasury Funding Initiative 17 (maintenance and support). The node-to-client protocol was updated to version 23, unlocking new queries for wallets and other tools interacting with the node. The team also simplified the process for developers to target the current era when querying the node, improved observability of chain selection by exposing the reasons behind chain switches, and integrated a ledger fix for a bug in the Plutus script context.

Work also progressed on repository and tooling improvements. The team unified all consensus packages into a single package to simplify dependencies for downstream projects and enhanced the snapshot converter tool with a daemon mode that watches for new ledger snapshots and converts them automatically, which is useful for node operators managing different storage backends. The team also added developer documentation for inspecting a node’s chain.

Finally, testing and quality improvements included generalizing Genesis tests to support any block type, paving the way for conformance testing with real Cardano blocks, adding support for GHC 9.14, and internal cleanup of chain selection and ledger database code.

WALLETS AND SERVICES 

The Lace team is currently focused on supporting the upcoming Midnight mainnet launch, bringing rational privacy directly into the wallet experience. As the first wallet to integrate Midnight, Lace will give Cardano users secure, non-custodial access to Midnight assets alongside their existing holdings. This milestone introduces a new model in which public and private assets can coexist seamlessly within a single familiar interface, with Lace continuing to evolve alongside the Midnight ecosystem.

SMART CONTRACTS

This week, the Cardano High Assurance team worked on the automated formal verification tool, focusing on implementing correct costing for the CEK machine used in formal verification. They also extended and improved the set of optimization rules, achieving a significant reduction in processing time. This brings the tool close to proving complex smart contracts directly at the UPLC level. The team plans to demonstrate its features at Buidler Fest this March.

For the property-based testing tool, the team focused on integrating the solution’s core components: a testing interface for generating complex test scenarios, a threat model that automatically explores known weaknesses, and a comprehensive set of examples showcasing the tool’s capabilities.

Finally, the team continued preparing the first release of the static analysis tool for Plinth smart contracts. They implemented an initial set of rules and developed a Visual Studio Code extension. Work now focuses on finalizing the release and making the tool available to Plinth developers.

SCALING

This week, the Mithril team continued implementing new succinct proofs. The team completed the SNARK pre-aggregation primitives in the STM library, began preparing the SNARK prover witness, and continued adapting the certificate chain for SNARK AVK. They also made significant progress on the SNARK circuit refactoring, completing the error handling and type consistency tasks while continuing work on decoupling the Midnight library and aligning naming. In addition, they refactored the prototype recursive circuit's state transition functions and continued the full review of the recursive circuit prototype, the technical report for the recursive Halo2 circuit, and the impact assessment of SNARK on Mithril protocol security.

The team also continued work on the new certification for Cardano blocks and transactions, including the prover and the client library implementation. They completed the integration of Mithril explainers into the Cardano Developer Portal website and continued work on static builds for Mithril nodes.

Finally, they fixed a slowness issue affecting the import of Cardano blocks and transactions on dev aggregators, improved the DMQ node setup documentation, and tested the DMQ node 0.3.0 pre-release.

VOLTAIRE

Intersect is preparing to facilitate the committee elections. Candidate applications will open on March 30, 2026, and close on April 17, with voting taking place from April 20 to May 1. Committee seats carry two-year terms, with elections held annually so that roughly half of each standing committee's membership rotates each year — preserving institutional knowledge and cultural continuity across cycles.

RESEARCH 

This week, the Input Output Research (IOR) team is reviewing submissions received for the cryptographic tools workshop, affiliated with Eurocrypt 2026, in May.


Weekly development report as of 2026-03-13

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Ada will now be accepted as a payment method in 137 SPAR stores across Switzerland

Cardano Buidler Fest will take place in Argentina on March 24–25

Bodega Labs will launch a fully private prediction market on Midnight Network

Danogo announced plans to launch a USDCx lending pool

Cardano Foundation’s Reeve will be integrated into BlockSign, enabling one-click publishing of proof of reserves on Cardano.

CORE TECHNOLOGY

This week, the ledger team conducted additional testing and fixed several minor bugs. They also implemented further restructuring of the ledger state to improve performance and simplify the ongoing ledger HD implementation. Finally, they progressed with nested transactions – defining two major ledger rules to process sub-transactions, and with canonical ledger state – implementing two additional namespaces.

WALLETS AND SERVICES 

The Lace team is currently supporting the Midnight mainnet release. 

They are also advancing LaceID – a native identity feature within the Lace wallet. LaceID will enable users to manage verifiable credentials alongside native assets and non-fungible tokens (NFTs) in a single, trusted environment. LaceID is currently in development and is in its first phase of the roadmap – proof of humanity. Follow these updates to learn more as development progresses.

Finally, the team continues work on the mobile application development.

SCALING

This week, the Mithril team continued implementing new succinct proofs. They completed signer authentication for SNARK verification keys, calibrated precision for lottery target value computation, and aligned domain separation tags as part of the SNARK circuit refactoring. Progress also continued on SNARK pre-aggregation primitives, improved error handling within the refactored circuit, the full review of the recursive circuit prototype, and the technical report for the recursive Halo2 circuit.

Additionally, the team finalized proof routes for Cardano blocks and transactions in the aggregator REST API and continued preparations for the next distribution release. They advanced the integration of Mithril into the Cardano Developer documentation site, added support for upgrading the Cardano node without requiring a new Mithril distribution, and completed the upgrade to Cardano node v.10.6.

Finally, they fixed a performance regression in the transaction proof route and worked on a slow import issue on dev aggregators.

VOLTAIRE

The Intersect committee elections for 2026 have been announced. Applications to stand for election will open at the end of March.

RESEARCH 

This week, the Input Output Research (IOR) team presented two papers at Financial Cryptography 2026. 

The ‘Incentivizing Geographic Diversity for Decentralized Systems’ paper establishes a formal model to assess geographic diversity and proposes a game-theoretic framework to incentivize greater decentralization in networks. Geographic centralization makes systems vulnerable to regional disasters, attacks, or political crackdowns. The authors designed a system that rewards people for setting up nodes in underrepresented areas and more diverse locations while using round-trip time measurements to ensure those nodes are indeed reporting their true physical location.

The paper ‘On Sybil-proofness in Restaking Networks’ was presented at the associated 5th Workshop on Decentralized Finance (DeFi). This paper addressed how restaking allows one person to use the same deposit to secure multiple services, but this creates a risk where they can hide their identity to avoid being punished for bad behavior. The research shows that it is mathematically impossible to design a penalty system that simultaneously prevents all types of hidden-identity attacks.

The proposal submission date has been extended to March 9, 2026, for the cryptographic tools for the blockchain workshop, affiliated with Eurocrypt 2026, in May.

The team also published a blog about building Midnight on peer-reviewed foundations.


Weekly development report as of 2026-03-06

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

MoneyGram is now a federated node operator for Midnight Network

The Yoroi staking pool will offer dual rewards, allowing stakers to earn night tokens alongside ada

The Cardano Foundation will assume stewardship of Project Catalyst going forward

The Pyth and Cardano hackathon will take place in Argentina in March

COTI Network will collaborate with Artifi Labs to support the long-term development of Djed stablecoin.

CORE TECHNOLOGY

This week, the performance and benchmarking team released benchmarks for node versions 10.5.4 and 10.6.2, including parallel GC benchmarks, and prepared a new PlutusV3 baseline. The performance cluster now has a custom, isolated Nix cache to ensure safe benchmarking of security-critical changes. They also improved tracing robustness by forcing lazy values in controlled sections of code. In Leios, the LTL Trace Verifier is complete and awaiting integration. For node diversity, the formal trace schema definition has entered the validation phase, while trace forwarding in native Rust is moving into testing. For more details, see this technical update.

SCALING

This week, the Mithril team continued implementing new succinct proofs. They completed the lottery target value computation for SNARK, updated protocol parameters to SNARK-friendly values, prepared the SNARK circuit refactoring, and removed the off-circuit module from the Halo2 circuit. Work also progressed on SNARK pre-aggregation primitives, signer authentication for SNARK, the full review of the recursive circuit prototype, and the technical report for the recursive Halo2 circuit.

Additionally, the team advanced the new certification for Cardano blocks and transactions, implementing the transaction membership prover and proof routes in the aggregator REST API. Preparation for the 2608 distribution release also began.

Finally, they fixed a bug caused by a breaking change in the snapshot converter for Cardano node v.10.6.2 and resolved flaky unit tests in the SNARK circuit.

The Hydra team focused on stability, correctness, and improved diagnostics. They resolved several consensus-related issues, including a race condition affecting decommits, a stuck-node scenario around commits, and an infinite AckSn loop linked to commit and decommit handling. The team also fixed a bug involving deposits and chain rollbacks, addressed user-reported issues related to contract computation time on the hydra-node, and improved error reporting for missing script witnesses, making troubleshooting more straightforward. Logging around chain synchronization status was enhanced to provide clearer operational visibility.

Finally, the team made great progress on the partial fanout development. 

The Leios team held their February monthly review session, focusing on enhancing Cardano’s blockchain throughput. They presented a working prototype capable of producing endorser blocks and handling high transaction loads within a simulated network. Critical design discussions addressed resource management, balancing memory and disk usage to ensure Leios did not compromise the existing Ouroboros Praos security model. The team also reviewed sophisticated testing frameworks, including deterministic simulations, to evaluate network behavior under fault and adversarial conditions. The update concluded with formal cryptographic specifications and new voting models to maintain protocol integrity as the project progresses toward a public testnet.

RESEARCH 

The Input Output Research (IOR) team is accepting proposals for the cryptographic tools for the blockchain workshop, affiliated with Eurocrypt 2026, in May. Proposal submissions remain open on the CTB website until February 27.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

MoneyGramがMidnightネットワークの連合型ノードオペレーターに

Yoroiステークプールが二重報酬を提供、ADAとNIGHTトークンの同時獲得が可能に

Cardano財団ががProject Catalystの運営を継承

PythとCardanoのハッカソン、アルゼンチンで3月開催

COTI NetworkがArtifi LabsとDjedステーブルコインの長期開発で提携

コアテクノロジー

パフォーマンス&ベンチマークチームは、並列GCベンチマークを含むノードバージョン10.5.4および10.6.2のベンチマークをリリースし、PlutusV3の新しいベースラインを準備しました。パフォーマンスクラスターには、セキュリティ上重要な変更のベンチマークを安全に行うため、隔離されたカスタムのNixキャッシュが導入されました。制御されたコードセクションで遅延評価を強制することにより、トレーシングの堅牢性を向上させました。Leiosでは、LTLトレース検証器が完成し、統合を待っています。ノードの多様性については、形式的なトレーススキーマ定義が検証フェーズに入り、Rustネイティブによるトレース転送はテスト段階に移行しています。詳細はテクニカル更新情報をご覧ください。

スケーリング

Mithrilチームは新しい簡潔な証明の実装を続けました。SNARK用の抽選ターゲット値計算を完了し、プロトコルパラメーターをSNARK適正値へ更新し、SNARK回路のリファクタリングを準備し、Halo2回路からオフサーキットモジュールを削除しました。SNARKの集約前プリミティブ、SNARK用の署名者認証、再帰的回路プロトタイプのフルレビュー、再帰的Halo2回路に関するテクニカルレポートの作成も進展しました。

Cardanoのブロックおよびトランザクションに関する新しい認証に関する作業も進展しており、アグリゲーターREST APIに、トランザクションメンバーシッププルーバーおよび証明ルートを実装しました。2608ディストリビューションリリースの準備も開始しました。

Cardanoノードv.10.6.2のスナップショットコンバーターにおける破壊的変更に起因するバグを修正し、SNARK回路の不安定なユニットテストも解決しました。

Hydraチームは、安定性、正確性、診断機能の改善に注力しました。デコミットに影響を与える競合状態や、コミット周りでノードが停止するシナリオなど、コンセンサス関連の複数の課題を解決した他、コミットおよびデコミットの処理に関連するAckSnの無限ループ問題も解消しました。デポジットとチェーンロールバックに関するバグを修正し、ユーザーから報告されたhydra-node上でのコントラクトの計算時間に関する不具合に対処し、トラブルシューティングを明確化することによってwitnessスクリプト欠如時のエラー報告を改善しました。チェーン同期ステータスに関するロギングを強化し、運用の可視性を向上させました。

部分的ファンアウトの開発も大きく進展しています。 

Leiosチームは、Cardanoのスループット向上に焦点を当てた2月の月例レビューセッションを開催しました。シミュレーションネットワークでエンドーサーブロックを生成し、高負荷のトランザクションを処理できる動作プロトタイプを提示しました。設計議論では、既存のOuroboros Praosのセキュリティモデルを損なうことのないようにメモリーとディスク使用量のバランスをとるリソース管理に焦点が当てられました。決定論的シミュレーションを含む高度なテストフレームワークを検討し、障害発生時や敵対的な条件下でのネットワークの挙動評価を行いました。セッションの締めくくりとして、パブリックテストネットに向けた、プロトコルの整合性を維持するための形式的な暗号仕様や新しい投票モデルが提示されました。

研究 

\*\*Input Output Research（IOR）\*\*チームは、5月に開催されるEurocrypt 2026に併設されるブロックチェーンワークショップのための暗号ツールの提案を受付中です。提案の提出はCTBのウェブサイトで2月27日まで受け付けています。


Weekly development report as of 2026-02-27

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Blockdaemon is now a Midnight federated mainnet validator

Catch up on all the announcements made at Consensus Hong Kong

The Cardano Foundation and Paris Blockchain Week announced the ‘Institutional Adoption Track’ of the ‘Start In Block’ startup competition, targeting blockchain startups focused on enterprise-scale solutions

Coinbase expands on-chain loans to include ADA, XRP, and LTC as collateral

Messari releases the State of Cardano Q4 2025 report.

CORE TECHNOLOGY

This week, the core technology teams released node v.10.6.2, focusing on structural improvements, tracing enhancements, and preparation for upcoming protocol upgrades.

The release further strengthens the new tracing system, improving observability and diagnostics across components. It also removes the legacy networking stack, simplifying the architecture and reducing technical debt, and introduces a major refactor of the API module structure to improve long-term maintainability.

Additionally, foundational work was added to support the upcoming intra-era hard fork (protocol version 11) and the future Dijkstra era (protocol version 12), preparing the node for the next phase of protocol evolution.

Additional highlights include expanded Plutus built-in functionality scheduled for activation in protocol version 11, stability improvements across networking and mempool handling, CLI updates including transaction fee estimation, and arm64 support for release artifacts and OCI images.

See release notes for more details.

The ledger team resolved several issues required for Cardano node v.10.6.2 release and focused on preparations for Cardano node v.10.7.0 release and the intra-era hard fork to protocol version 11. 

The team also continued work on CIP-118 (nested transactions), including formalizing ledger rules for sub-transactions and restructuring UTXO update handling to support this functionality. They completed renaming for CIP-159 (account address enhancement, phase one) to reflect the promotion of reward accounts to full accounts, and introduced a new ‘balance intervals’ field in the transaction body.

Finally, work on CIP-165 (canonical ledger state) progressed, with three namespaces implemented, which establishes the structural foundation for the broader canonical ledger state framework.

SCALING

This week, the Mithril team focused on implementing new succinct proofs. The team worked on pre-aggregation SNARK primitives in the STM library, completed bridging between CPU and circuit implementations, and worked on lottery target pre-computation. They also continued to adapt the certificate chain for SNARK-friendliness and to implement signer authentication for SNARK verification keys.

Additionally, the team continued work on the new certification for Cardano blocks and transactions. This included implementing the prover, proof routes in the aggregator REST API, and the diffusion of the signing configuration.

Finally, they continued working on static builds for Mithril nodes, fixed some CI bugs, and implemented support for Cardano node v.10.6.2.

The Hydra team relaunched monthly Hydra working group sessions with a stronger focus on real-world users and production feedback. The core team shared updates on the upcoming v.1.3 release, including fee calculation fixes, snapshot improvements, memory optimizations, and progress on partial fan-out.

Key use cases, including DeltaDeFi and Masumi, presented their experience using Hydra as a scaling solution. Production hardening and developer experience improvements were identified as the key focus areas for the next iteration. 

The Leios team made steady progress on both prototype implementation and parameter consolidation:

The prototype is now minting and diffusing endorser blocks (EBs) — including large blocks with hundreds of transactions — under mempool load in a three-node protodevnet setup. The Linear Temporal Logic (LTL) trace verifier is production-ready and will be integrated into the demo. A dedicated session was held to define key verification properties, with stable operation targeted by the end of the month.

Architecture refinements: the C4 model, a popular way to visualize and document software architecture, was updated to include explicit state tracking for announcement flows, supporting equivocation detection and deduplication. For security, the EB store must retain all known but not yet certified EBs in volatile storage. Even in worst-case scenarios, volatile storage requirements remain manageable at tens of gigabytes over a 36-hour window. An immutable and volatile storage split is recommended to optimize disk usage.

On the research side, the team conducted combinatorial analysis and realistic network simulations to study mempool fragmentation and transaction propagation under overload, including regular random and expander graph topologies. This work is being aligned with the mempool inconsistency model and the optimistic performance analysis, with particular focus on transaction retention time. The team remains on track to deliver a joint summary document in early March that consolidates findings on safe protocol parameters.

Overall, the prototype demonstrates clear end-to-end behavior, while research and modeling efforts are rapidly converging.

VOLTAIRE

Intersect is gearing up for committee elections in April. Applications open in March — keep an eye out for more details soon.

RESEARCH 

The Input Output Research (IOR) team is planning the cryptographic tools for the blockchain workshop, affiliated with Eurocrypt 2026, in May. This workshop aims to bring together researchers working on cryptographic problems in different ecosystems to discuss the latest approaches and results. Proposal submissions remain open on the CTB website until February 27.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

BlockdaemonがMidnightの連合型メインネットバリデーターに

香港Consensusで発表された全告知

Cardano財団とParis Blockchain Weekは、スタートアップコンペティションのStart In Blockで、企業規模のソリューションに焦点を当てたブロックチェーンスタートアップを対象としたInstitutional Adoption（機関採用）トラックを発表

Coinbaseがオンチェーンローンを拡張し、ADA、XRP、LTCをコラテラルに追加

MessariがCardanoの現状：2025年第4四半期レポートを公開

コアテクノロジー

コアテクノロジーチームはCardanoノードv.10.6.2をリリースしました。このリリースでは、構造的な改善、トレーシング機能の強化、今後のプロトコルアップグレードへの準備に焦点を当てています。

このリリースにより新しいトレーシングシステムがさらに強化され、各コンポーネントにおける可観測性と診断機能が向上しました。レガシーネットワークスタックを削除することでアーキテクチャーを簡素化して技術負債を削減し、APIモジュール構造の大規模なリファクタリングを実施して長期的な保守性を高めました。

次回の開発期内ハードフォーク（プロトコルバージョン11）および将来のDijkstra期（プロトコルバージョン12）をサポートするための基礎作業を追加し、プロトコル進化の次段階に向けた準備を整えました。

その他のハイライトとして、バージョン11で有効化予定のPlutus組み込み機能の拡張、ネットワークおよびメモリープール処理の安定性向上、トランザクション手数料見積もりを含むCLIの更新、arm64サポートが挙げられます。

詳細はリリースノートをご覧ください。

台帳チームは、Cardanoノードv.10.6.2のリリースに必要な諸問題を解決し、ノードv.10.7.0およびプロトコルバージョン11への開発期内ハードフォークに向けた準備に注力しました。 

CIP-118（ネストされたトランザクション）に関する作業を継続し、サブトランザクションのための台帳ルールの形式化や、この機能をサポートするためのUTXO更新処理の再構築を行いました。CIP-159（アカウントアドレス強化フェーズ1）に関連して、報酬アカウントをフルアカウントへ昇格させることに伴う名称変更を完了し、トランザクションボディに新たに‘balance intervals’フィールドを導入しました。

CIP-165（標準台帳状態）の作業が進展しました。ここでは3つの名前空間を実装して、より広範な標準台帳状態フレームワークの構造的基盤を確立しました。

スケーリング

Mithrilチームは新しい簡潔な証明の実装に注力しました。STMライブラリーにおける集約前SNARKプリミティブに取り組み、CPU実装と回路実装のブリッジ作業を完了し、抽選ターゲットの事前計算にも着手しました。SNARKとの親和性を高めるための証明書チェーンの適応作業や、SNARK検証鍵のための署名者認証の実装も継続しています。

Cardanoブロックおよびトランザクションのための新しい認証に関する作業を継続しました。具体的には、証明者、アグリゲーターREST APIにおける証明ルート、署名設定の伝播機能の実装などが挙げられます。

Mithrilノードの静的ビルド、CIバグの修正、Cardanoノードv.10.6.2のサポートを実装しました。

Hydraチームは、実際のユーザーや本番環境からのフィードバックへ改めて重点を置きながら、月例のHydraワーキンググループセッションを再開しました。コアチームは、手数料計算の修正、スナップショットの改善、メモリー最適化、部分的なファンアウトの進捗など、次期v.1.3リリースの更新情報を共有しました。

DeltaDeFiやMasumiといった主要なユースケースにおける、スケーリングソリューションとしてのHydraの使用経験が発表されました。次のイテレーションの主要な重点分野として、本番環境での堅牢化と開発者エクスペリエンスの向上が特定されました。 

Leiosチームは、プロトタイプ実装とパラメーターの集約の両面で着実に進展しました。

3ノードのプロトタイプ開発ネット環境にて、メモリープールに負荷がかかった状態で、数百のトランザクションを含む大きなブロックを持つエンドーサーブロック（EB）のミントと伝播に成功しました。LTL（線形時相論理）トレース検証ツールが本番利用可能な状態となりました。これは、デモに統合される予定です。主要な検証プロパティを定義するための専用セッションが開催され、今月末までの安定稼働を目指しています。

アーキテクチャーの精査：ソフトウェアアーキテクチャーを視覚化および文書化する一般的な方法であるC4モデルを更新し、アナウンスメントフローに明示的な状態追跡を追加して、二重署名の検出と重複排除をサポートしました。セキュリティ上の理由から、EBストアは未認証の既知の全EBを揮発性ストレージに保持する必要があります。最悪のシナリオでも、36時間のウィンドウで数十GB程度という管理可能な範囲に収まります。ディスク使用量最適化のため、不変ストレージと揮発性ストレージの分割が推奨されています。

研究に関しては、組合せ分析と現実的なネットワークシミュレーションを実施し、正則ランダムグラフやエキスパンダーグラフといったトポロジーを用いて、過負荷時におけるメモリープールの断片化とトランザクション伝播を調査しました。この作業は、メモリープールの不整合モデルや楽観的パフォーマンス分析と整合を図っており、特にトランザクションの保持時間に焦点を当てています。安全なプロトコルパラメーターに関する知見をまとめた共同サマリー文書は、3月上旬の提供予定に向けて順調に進んでいます。

プロトタイプは一連の動作が設計通りに機能することを実証しており、研究とモデリングの取り組みは急速に収束しつつあります。

VOLTAIRE

Intersectは、4月に開催される委員会選挙の準備を進めています。3月より立候補の受付が開始されますので、今後の更新情報にご注目ください。

研究 

\*\*Input Output Research（IOR）\*\*チームは、5月に開催されるEurocrypt 2026に併設されるブロックチェーンワークショップのための暗号ツールの計画を進めています。このワークショップは、異なるエコシステムで暗号に関する問題に取り組む研究者を集め、最新のアプローチや結果について議論することを目的としています。提案の提出はCTBのウェブサイトで2月27日まで受け付けています。


Weekly development report as of 2026-02-20

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Midnight Network has announced that its mainnet launch is scheduled for the end of March 2026; also, keep an eye on the upcoming Midnight city simulation

LayerZero integration is coming to Cardano, enabling connectivity to more than 150 blockchains

CswapDEX is rolling out native Bitcoin staking on the public testnet

Cardano is participating in the Africa Tech Summit this week – read the highlights here

Amplify Cardano is sponsoring five booths for five projects at RareEvo, offering Web3 developers an opportunity to showcase their work.

CORE TECHNOLOGY

Over the past few weeks, the networking team focused on enhancing the robustness of the diffusion layer by releasing Cardano node v.10.5.4, which includes essential patches following the November incident. They also optimized connectivity for peers behind firewalls and implemented support for WASM. Additionally, the team improved diffusion stability by enforcing a maximum number of reconnection attempts and adjusting ChainSync timeouts for trusted local root peers. They progressed on Leios development by creating a network mux demo and simulations to analyze traffic alongside Praos. The team further enhanced the dmq-node by moving it to a dedicated repository, refining validation logic, and fixing mempool bugs. Finally, they addressed technical debt by removing duplicate trace events and implementing networking adjustments for the new tracing system.

The consensus team continued working on node v.10.7 integration, integrated network packages up to ouroboros-network-0.22.6 (#1819; #1865), incorporated the latest ledger changes, and integrated kes-agent-1.1. As part of the node maintenance and support initiative, the team also delivered several node improvements. They enhanced observability by exposing the reason for chain switches in the ChainSel tracer, added support for the new GetDRepDelegations ledger state query in NodeToClientV\_23, and fixed an exception caused by a resource mix-up in the V2 LedgerDB. Additional updates include minor code cleanup and new documentation clarifying the consensus and ledger interaction.

Finally, the team continued developing the Leios prototype: they refactored the design to use EbHash instead of EbId, simplified the codebase to monomorphic types to enable faster iteration, and implemented an in-memory LeiosDb to support ThreadNet tests.

SCALING

This week, the Mithril team focused on implementing new succinct proofs. The team worked on pre-aggregation SNARK primitives in the STM library, completed golden master tests for the non-recursive SNARK circuit, and worked on bridging CPU and circuit implementations. They also began adapting the certificate chain for SNARK-friendliness.

Additionally, the team continued work on the new certification for Cardano blocks and transactions. This included implementing the signable builder, along with the artifact and proof routes in the aggregator REST API.

Finally, they worked on static builds for Mithril nodes and fixed bugs in the hash-to-curve implementation of the Schnorr signature.

The Leios team continued steady progress across research, simulation, and tooling.

They proposed producing a concise joint summary report, targeted for early March, to reconcile protocol parameter findings from mainnet measurements, the TypeScript simulator, mathematical models, delta-Q analysis, and prior research, with the goal of aligning recommendations.

Work advanced on Leios-related components in the TypeScript simulator, with a demo expected shortly. In parallel, the team developed a supporting tool to reverse-engineer on-chain DApps by decompiling UPLC to Aiken and using a large language model to infer readable variable names.

They also progressed documentation and development tracker consolidation, refined the migration plan, and collaborated across research, engineering, and web teams to resolve outstanding technical questions and confirm migration timelines.

Following the February 10 working session, they completed the safety property statement and initiated the corresponding proof. Additional updates included formalizing sort-voting and certificate processes, clarifying the feta-comply method, extending the TypeScript MEV simulation with a simplified EBS model, and advancing Antithesis testing infrastructure using instrumented Go-based Leios demo nodes.

RESEARCH 

The Input Output Research (IOR) team is focused on Work Package 26 planning and reviewing proposal submissions.

They are also planning the cryptographic tools for the blockchain workshop, affiliated with Eurocrypt 2026, in May. This workshop aims to bring together researchers working on cryptographic problems in different ecosystems to discuss the latest approaches and results. Proposal submissions remain open until February 27 on the CTB website.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

Midnight Networkは、メインネットローンチを2026年3月末に予定していると発表、また、来るMidnightシティシミュレーションにも注目

LayerZeroがCardano統合へ、150を超えるブロックチェーンとの接続が可能に

CswapDEXがパブリックテストネットでのネイティブビットコインステーキングを展開

Cardanoは今週Africa Tech Summitに参加 - ハイライトはこちら

Amplify CardanoがRareEvoで5つのプロジェクトのための5つのブースを後援、Web3開発者に成果を披露する機会を提供 

コアテクノロジー

ここ数週間、ネットワーキングチームは伝播層の堅牢性強化に注力しており、11月のインシデントを受けた必須パッチを含むCardanoノードv.10.5.4をリリースしました。ファイアウォールの背後にあるピアの接続性を最適化し、WASMのサポートを実装しました。再接続試行回数に上限を設け、信頼されたローカルルートピアのChainSyncタイムアウトを調整することで、伝播の安定性を向上させました。Leiosの開発も進展しています。Praosと並行してトラフィックを分析するためのネットワークmuxデモとシミュレーションを作成しました。dmq-nodeを専用リポジトリに移行し、検証ロジックを改良し、メモリープールのバグを修正することで、その機能を強化しました。重複するトレースイベントを削除し、新しいトレーシングシステム向けにネットワーク調整を行うことで、技術負債に対処しました。

コンセンサスチームは、ノードv.10.7の統合に向けた作業を継続し、ouroboros-network-0.22.6までのネットワークパッケージを統合し（#1819、 #1865）、最新の台帳の変更を取り入れ、kes-agent-1.1を統合しました。ノードのメンテナンスおよびサポートイニシアチブの一環として、ノードの改良も行いました。具体的には、ChainSelトレーサーでチェーンスイッチの理由を公開することで可観測性を向上させ、NodeToClientV\_23に新しいGetDRepDelegations台帳ステートクエリのサポートを追加し、V2 LedgerDBでのリソースの取り違えによって引き起こされる例外エラーを修正しました。その他の更新には、軽微なコードのクリーンアップや、コンセンサスと台帳の相互作用を明確にする新しいドキュメントが含まれます。

Leiosプロトタイプの開発を継続しました。設計をリファクタリングしてEbIdの代わりにEbHashを使用するようにし、コードベースを単相型に簡素化してイテレーションを高速化し、ThreadNetテストをサポートするためにインメモリーLeiosDbを実装しました。

スケーリング

Mithrilチームは新しい簡潔な証明の実装に注力しました。STMライブラリにおける事前集約SNARKプリミティブに取り組み、非再帰的SNARK回路のゴールデンマスターテストを完了し、CPU実装と回路実装のブリッジ作業を行いました。SNARKとの親和性を高めるための証明書チェーンの適応作業も開始しました。

Cardanoブロックおよびトランザクションのための新しい認証に関する作業を継続しました。これには、署名可能なビルダーの実装に加え、アグリゲーターREST APIにおけるアーティファクトおよび証明ルートの実装が含まれます。

Mithrilノードの静的ビルドに取り組み、シュノア署名のhash-to-curve実装におけるバグを修正しました。

Leiosチームは、研究、シミュレーション、ツール開発において着実な進展を続けました。

3月11日の期限を前に推奨事項の足並みを揃えるため、3月上旬を目標とした簡潔な共同サマリーレポートの作成を提案しました。このレポートは、メインネットでの測定値、TypeScriptシミュレーター、数学的モデル、Delta-Qの分析結果、およびこれまでの研究から得られたプロトコルパラメーターに関する知見を集約するためのものです。

TypeScriptシミュレーター内のLeios関連コンポーネントの開発が進んでおり、間もなくデモが公開される予定です。並行して、UPLCをAikenに逆コンパイルし、LLMを使用して可読性の高い変数名を推論することで、オンチェーンDAppをリバースエンジニアリングする支援ツールも開発しました 。

ドキュメントおよび開発トラッカーの統合を進め、移行計画を精査した他、リサーチ、エンジニアリング、Webの各チーム間で連携し、未解決の技術的課題を解決して移行スケジュールを確定させました。

2月10日のセッション以降、安全性プロパティ記述を完了し、対応する証明を開始しました。その他、ソート投票と認証プロセスの形式化、feta-complyメソッドの明確化、EBS簡易モデルを使用したTypeScript MEVシミュレーションの拡張、計測機能を備えたGo言語ベースのLeiosデモノードを使用したAntithesisテストインフラも進めています。

研究 

\*\*Input Output Research（IOR）\*\*チームは、Work Package 26の計画策定と提案書のレビューに注力しています。

5月に開催されるEurocrypt 2026に併設される、ブロックチェーンワークショップのための暗号ツールの計画も進めています。このワークショップは、異なるエコシステムで暗号に関する問題に取り組む研究者を集め、最新のアプローチや結果について議論することを目的としています。提案の提出はCTBのウェブサイトで2月27日まで受け付けています。


Weekly development report as of 2026-02-13

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Rare Network is offering event and marketing funding through the Amplify Cardano program

CME Group will launch Cardano futures on February 9

World Mobile announced plans for a new phone, AirNode NFTs, and real-world asset (RWA) positioning as part of its 2026 roadmap

CardanoThingsIO launched a series of online workshops to help developers build their first Cardano IoT project

The Cardano Foundation released the results of its 2025 State of the Cardano Ecosystem survey

The Catalyst program provides a Fund15 update – read more here.

CORE TECHNOLOGY

This week, the performance and tracing team worked on re-establishing performance baselines for node v.10.5 and v.10.6 branches, ensuring recent incremental changes are reflected so that future performance shifts can be accurately attributed. 

Additionally, the team advanced tooling and infrastructure, including adding native HTTPS support to cardano-tracer, progressing a PromQL-like query language and metrics timeseries engine for future alerting and dashboards, and switching the reporting pipeline to the Typst typesetting system for faster builds and more accessible outputs. They also backported changes to re-enable cluster benchmarking on 10.5.x and significantly improved the performance workbench’s profiling capabilities and Nix API.

Finally, the team continued tracing and node diversity work by aligning tracing between cardano-node and dmq-node, migrating cardano-submit-api to the new tracing system, improving default tracing configurations, defining a formal schema for node trace messages, and prototyping trace forwarding in native Rust to support non-Haskell node implementations.

SMART CONTRACTS

The Cardano High Assurance team is thrilled to announce the launch of the early access program for the Cardano High Assurance automatic formal verification tool!

Five companies are already participating in this pilot phase, helping the team refine and enhance the tool for the entire Cardano developer ecosystem.

This is your opportunity to join the early access program to directly influence the development of critical security tooling for Cardano. The team is eager to:

Understand your specific development context

Learn about your pain points with smart contract verification

Gather your hands-on feedback as you use the tool.

Your input will directly shape the product roadmap and ensure the development of exactly what the Cardano developer community needs. Subscribe now: afv\_earlyaccess@iohk.io. 

SCALING

This week, the Mithril team released the 2603.1 distribution. This release adds support for the decentralized message queue (DMQ) protocol, preliminary decentralized configuration, a Blockfrost API integration to fetch stake pool operators’ tickers and names, along with various bug fixes and improvements.

The team also implemented pre-aggregation SNARK primitives in the STM library and continued developing the non-recursive SNARK circuit MVP, including golden tests.

In parallel, work progressed on the new certification for Cardano blocks and transactions, with implementation of the signable builder and artifact routes in the aggregator REST API. The team also completed documentation proposals to increase the adoption of Mithril and DMQ nodes on Cardano.

Finally, they fixed several bugs in the DMQ publisher and follower aggregator and continued updating the protocol security page.

RESEARCH

The Input Output Research (IOR) team has submitted final end-of-year 2025 reports to Intersect following a three-week consultation period with the community. The IOR team disseminated these Foundational Research and Technology Validation reports through January, achieving an estimated reach of over 24,000 across all ecosystem platforms. Work Package 25, the first under Cardano Vision, has now been formally closed, and the associated funding milestones have been completed.

Work Package 26 planning is well underway, and the team is assessing options following recent stakeholder interviews on research proposals.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

Rare NetworkがAmplify Cardanoプログラムを通じてイベントおよびマーケティングの資金調達を提供

CME Groupが2月9日にCardano先物を上場

World Mobileが2026年ロードマップを公開。新型スマホやAirNode NFT、RWAへの注力を発表

CardanoThingsIOがCardano IoTプロジェクトを支援するオンラインワークショップを開始

Cardano財団が2025年Cardanoエコシステム現状調査の結果を発表

コアテクノロジー

パフォーマンス＆トレースチームは、 ノードv.10.5およびv.10.6ブランチのパフォーマンスベースラインの再確立に取り組みました。これにより、直近の微細な変更が反映され、将来的なパフォーマンスの変化を正確に特定できるようになります。 

ツールとインフラを強化しました。具体的には、cardano-tracerへのネイティブHTTPSサポートの追加、将来的なアラートやダッシュボード構築のためのPromQL風クエリ言語およびメトリクス時系列エンジンの開発、ビルドの高速化とアウトプットのアクセシビリティ向上のため、Typst組版システムへレポート作成パイプラインを移行するなどの作業を行いました。10.5.x におけるクラスターベンチマークを再有効化するための変更をバックポートし、パフォーマンスワークベンチのプロファイリング機能とNix APIを大幅に改善しました。

トレーシングとノードの多様化に関する作業を継続しました。cardano-nodeとdmq-nodeの間でのトレーシングの整合、cardano-submit-apiの新トレーシングシステムへの移行、デフォルトのトレーシング設定の改善、ノードトレースメッセージの形式スキーマの定義を行い、Haskell以外のノード実装をサポートするため、ネイティブRustによるトレース転送のプロトタイプ作成を行いました。

スマートコントラクト

Cardano High Assuranceチームは、Cardano High Assurance自動形式検証ツールの早期アクセスプログラムの開始を喜びとともに発表します。

すでに5社がこのパイロットフェーズに参加しており、Cardano開発エコシステム全体に向けて、チームによるツールの洗練と強化を支援しています。

これは、早期アクセスプログラムに参加して、Cardanoの重要なセキュリティツールの開発に直接影響を与えるチャンスです。チームは以下に重点を置いています。

ユーザーの具体的な開発コンテキストの把握

スマートコントラクト検証における課題の特定

ツール使用時の直接的なフィードバックの収集

皆様の意見は、プロダクトロードマップを形作り、Cardano開発コミュニティが真に必要とするものを開発するために不可欠です。登録はこちらから：afv\_earlyaccess@iohk.io

スケーリング

Mithrilチームは2603.1ディストリビューションをリリースしました。このリリースでは、分散型メッセージキュー（DMQ）プロトコルのサポート、分散型設定の予備サポート、ステークプールオペレーターのティッカーと名称を取得するためのBlockfrost API統合のほか、さまざまなバグ修正と改善が追加されています。

STMライブラリーに集約前SNARKプリミティブを実装し、ゴールデンテストを含む非再帰型SNARK回路のMVPの開発を継続しました。

Cardanoのブロックおよびトランザクションの新しい認証に関する作業を進め、アグリゲーターREST APIにおける署名可能ビルダーとアーティファクトルートの実装を行いました。CardanoにおけるMithrilおよびDMQノードの普及を促進するためのドキュメント草案の作成を完了しました。

DMQのパブリッシャーおよびフォロワーアグリゲーターのバグを修正し、プロトコルのセキュリティページの更新を継続しました。

研究

\*\*Input Output Research（IOR）\*\*チームは、コミュニティとの3週間にわたる協議期間を経て、2025年末の最終レポートをIntersectに提出しました。チームは1月を通じてこれらの「基礎研究」および「技術検証」レポートを公開し、あらゆるエコシステムプラットフォームを通じて推定24,000人以上にリーチしました。Cardano Visionの下での最初のワークパッケージであるWP25はこれで正式に終了し、関連する資金提供のマイルストーンも完了しました。

現在はWP26の計画が順調に進んでおり、研究案に関する最近のステークホルダーインタビューを踏まえて、チームは選択肢の評価を行っています。


Weekly development report as of 2026-02-06

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Charles announces USDCx is coming to Cardano, the latest delivery via the Pentad and community-funded Critical Integrations program

The $NIGHT token can now be bridged to COTI Network via ChainPort

Pondora launched Echo, the first non-custodial Hydra implementation that transforms smart contracts into Hydra participants

Pulse Cardano’s privacy DEX is live on the Midnight public testnet

Fluid Tokens are in the final stages of completing their Bitcoin - Cardano bridge

Input Output Engineering’s Hydra team and Masumi Network are collaborating to deploy Masumi on Hydra

CORE TECHNOLOGY

With the start of 2026, the consensus team continued to prioritize work on treasury-funded initiatives, including node maintenance and support, the Ouroboros Leios implementation, and the KES agent.

This week, the team progressed with Cardano node v.10.7 integration and release preparations, prototyped Leios endorsement block production, and advanced the broader Leios protocol implementation. Additionally, they kept working on TxSubmission logic, released kes-agent and kes-agent-crypto v.1.0, and added defensive programming logic to the mempool.

SCALING

The Hydra team started the new year with a focus on developer experience. Near-term efforts prioritize performance, observability, and addressing user-reported bugs and feature requests.

This week, the team focused on improving core functionality and demonstrations. They completed the Raspberry Pi demo, finalized improvements to chain-following, and continued progress on the partial fanout feature. They also improved the HTLC demo to better showcase real-world payment flows and accepted a community contribution fixing an HTTP endpoint.

Next, the team will continue investigating memory usage and performance characteristics (#2441, #2422), improve benchmarking, and investigate an issue with incremental commits. Work on partial fanout will continue, alongside preparations for the Hydra v.1.3.0 release.

This week, the Mithril team prepared the pre-release for the 2603.1-pre distribution, which introduces support for the DMQ protocol, preliminary support for decentralized configuration, implementation of the Blockfrost API to fetch stake pool operators' pool tickers and names, and various bug fixes and improvements.

The team focused on implementing the SNARK-friendly STM library, advanced the non-recursive SNARK circuit MVP, and progressed work on pre-aggregation and recursive SNARK circuits.

Additionally, they worked on the new certification for Cardano blocks and transactions, implementing the storage layer, the artifact builder, and the throttled preloader.

Finally, they continued documenting proposals to integrate Mithril and DMQ nodes with Cardano and updating the protocol security page.

VOLTAIRE

Intersect is facilitating an intra-era Cardano upgrade to protocol version 11.

The developer experience working group is conducting a 2026 State of Developer Experience Survey in five languages. If you are a developer, regardless of skill level, please be sure to respond. Take the survey here: English / French / Japanese / Chinese / Portuguese.



RESEARCH

The Input Output Research (IOR) team has gathered community feedback on their end-of-year 2025 reports before final submission to Intersect.

They would also like to announce that Professor Aggelos Kiayias has been named a 2025 Fellow by the Association for Computing Machinery – one of the highest honors in computing. ACM Fellows are selected by their peers and represent roughly the top 1% of the global membership. Find out more in the recent blog post.

A graphic illustrating highlights from this week's development report, in Japanese

エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

CharlesがCardanoへのUSDCx導入を発表、Pentadとコミュニティが資金提供するCritical Integrationsプログラムによる最新の成果

$NIGHTトークンがChainPort経由でCOTI Networkとブリッジ可能に

PondoraがEchoをローンチ、スマートコントラクトをHydra参加者に変貌させる、最初のノンカストディアルHydra実装

CardanoのプライバシーDEX、PulseがMidnightパブリックテストネットで稼働開始

Fluid TokensがBitcoin - Cardanoブリッジ完成に向けた最終段階

Input Output EngineeringのHydraチームとMasumi NetworkがMasumiのHydraデプロイで提携

コアテクノロジー

2026年の幕開けにあたり、コンセンサスチームは、引き続きノードのメンテナンスとサポート、Ouroboros Leiosの実装、KESエージェントなど、トレジャリーから資金を得ている取り組みを優先して進めています。

Cardanoノード v.10.7の統合とリリースの準備を進め、Leiosのエンドースメントブロック生成のプロトタイプを作成し、広範なLeiosプロトコルの実装を進展させました。中央集権的なTxSubmissionロジックを最適化し、kes-agentとkes-agent-crypto v.1.0をリリースしました。

スケーリング

Hydraチームは、開発者エクスペリエンスに焦点を当てて新年をスタートさせました。短期的な取り組みでは、パフォーマンス、観測可能性、ユーザーから報告されたバグや機能リクエストへの対応を優先しています。

コア機能の改善とデモンストレーションに注力しました。Raspberry Piのデモ、チェーン追従の改良を完了し、部分的なファンアウト機能を引き続き進めました。実際の支払いフローをより良く示すためにHTLCデモも改良し、HTTPエンドポイントを修正するコミュニティからの貢献を受け入れました。

今後は、メモリー使用量とパフォーマンス特性（#2441、#2422）の調査を継続し、ベンチマーキングを改善し、インクリメンタルコミットの問題を調査します。部分的なファンアウトの作業は、Hydra v.1.3.0のリリース準備と並行して継続します。

Mithrilチームは2603.1-preディストリビューションのプレリリースを準備しました。これには、DMQプロトコルのサポート、分散型設定の予備サポート、ステークプールオペレーターのプールティッカーと名前を取得するためのBlockfrost APIの実装、 さまざまなバグの修正や改良が導入されています。

SNARKに適したSTMライブラリーの実装に注力し、非再帰型SNARK回路MVP、集約前および再帰型SNARK回路を進めました。

Cardanoブロックとトランザクションの新たな認証に取り組み、ストレージ層、アーティファクトビルダー、スロットル付きプレローダーの実装を行いました。

MithrilとDMQのノードをCardanoに統合する提案の文書化を継続し、プロトコルセキュリティページを更新しました。

VOLTAIRE

Intersectは、Cardanoのプロトコルバージョン11への開発期内アップグレードを促進しています。

開発者エクスペリエンスワーキンググループは、2026年開発者エクスペリエンス現状調査（2026 State of Developer Experience Survey）を5か国語で実施しています。開発者は、スキルレベルに関わらず、必ず回答してください。調査票はこちら：英語 / フランス語 / 日本語 / 中国語 / ポルトガル語



研究

\*\*Input Output Research (IOR)\*\*チームは、Intersectへの最終提出に先立ち、2025年末のレポートに関するコミュニティからのフィードバックを収集しました。

Aggelos Kiayias教授が、コンピューティング分野で最も高い栄誉の一つであるAssociation for Computing Machinery（ACM）の2025年度フェローに選出されました。ACMフェローは同僚（ピア）によって選出され、世界中の会員の概ね上位1%に相当します。詳細は最近のブログ記事をご覧ください。


Weekly development report as of 2026-01-30

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week in ecosystem updates:

Surge launched on the Cardano mainnet, introducing a non-custodial automated trading platform

Minswap announced an upcoming airdrop of the NIGHT token to eligible users, scheduled to begin on January 29

EMURGO’s CEO, Phillip Pon, will appear as a featured speaker at the RWA Summit in Hong Kong this February

The updated Cardano constitution was ratified this week and will come into force on January 24

Finally, Zengo Wallet announced plans to integrate with Cardano, aiming to expand into the Bitcoin DeFi market. Zengo is a non-custodial Bitcoin wallet with approximately two million users.

CORE TECHNOLOGY

With the beginning of 2026, the ledger team continues to focus on several high-priority initiatives spanning the implementation of nested transactions, protocol design, specification improvements, and testing.

The team continued defining ledger validation rules for CIP-118: nested transactions. They achieved a major milestone with the CIP’s acceptance, which finalized the design and surfaced several important new use cases enabled by nested transactions. On the implementation side, the team completed the binary format and Haskell representation for Dijkstra-era transactions and their sub-transactions. They also defined the overall ledger rule structure for nested transactions, with placeholder logic in place. Implementing the full validation logic will be a key focus in the coming weeks.

Work also began on the first phase of CIP-159: account address enhancement. This long-anticipated proposal enables ada micropayments in the Dijkstra era. So far, the team has defined one of the new transaction fields and made preparatory code changes to support the broader implementation.

In parallel, the team made significant progress improving how the Common Development and Distribution License (CDDL) specification is defined and tested. This included major refactoring of cuddle, the tool used to define CDDL specifications, introducing a cleaner interface that reduces duplication across eras and improves safety. The team identified and fixed several specification bugs as part of this effort. They also added support for custom value generators, enabling new classes of conformance tests that were previously not possible due to CDDL’s limitations.

Additionally, the team released a new tool, \`antigen, and began integrating it with cuddle\`. Once complete, this will enable negative property testing for ledger decoders, helping prevent entire classes of deserialization bugs similar to those seen on mainnet earlier this year.

Beyond these core efforts, the ledger team also completed acceptance and full implementation of CIP-167: remove isValid from transactions, addressed substantial technical debt, and made further improvements to the ledger testing framework.

SMART CONTRACTS

This week, the Plutus team completed the implementation and costing of the Value primitives, along with all remaining development required for the upcoming intra-era hard fork.

The team also published a blog post recapping the UPLC 2025 event, highlighting conference discussions and outcomes.

In collaboration with MLabs, the team implemented optimized byteStringToInteger and integerToByteString primitives. These changes reduce execution time from quadratic to linear by leveraging the ghc-bignum library, made possible by dropping support for GHC 8.

In parallel, work continued across several longer-term initiatives. This included early development of Plutus V4, ongoing discussions with professor Philip Wadler on formally verifying the UPLC inliner, further optimization of UPLC runtime performance, and continued improvements to Plinth's usability.

SCALING

This year, the Mithril team continues to prioritize protocol decentralization through the decentralized message queue (DMQ) network, broader protocol adoption, and the introduction of succinct proofs by evolving the STM library with SNARKs.

This week, the team focused on implementing the SNARK-friendly STM library, continued developing the MVP for the non-recursive SNARK circuit, and began work on pre-aggregation SNARK primitives. In parallel, they also progressed on the prototype of the recursive SNARK circuit. 

Additionally, the team prepared for the deployment of the DMQ network by finalizing its infrastructure and node implementation. See how to get involved in the recently published developer blogs. Finally, they worked on documenting a proposal to make Mithril and DMQ opt-out features of Cardano, and continued updating the protocol security page.

VOLTAIRE

Cardano’s governance became fully decentralized in 2025, and 2026 began with a new constitution ratified by a super-majority of the constitutional committee and delegated representatives (DReps).

A governance action was enacted on January 10 to add a member to the Cardano constitutional committee, bringing the number to two more than the minimum. The purpose is to provide a buffer in case one member resigns or is otherwise unable to continue.

The ‘Cardano Pentad’, comprising Input Output, EMURGO, the Cardano Foundation, Intersect, and the Midnight Foundation, is a new coalition that works as a coordinated, treasury-supported process focused on network-wide infrastructure needs. Rather than relying on fragmented community-led efforts, the Pentad emphasizes unified decision-making while maintaining ecosystem representation.

RESEARCH

The Input Output Research (IOR) team started the year with an ongoing focus on the Cardano Vision program. 

Last month, the team submitted two draft reports to Intersect for the Fundamental Research and Technology Validation workstreams. These reports provide a high-level overview of progress under each workstream in 2025, moving from peer-reviewed science to implementation-ready designs. Watch the recent video update from Fergie Miller, director of research partnerships, who reflects on 2025 achievements.

These reports are now open for community review, and IOR is seeking your insights and suggestions to ensure they reflect the highest industry standards in the Cardano ecosystem. Join the conversation and share your feedback on the Cardano Forum posts by January 23.

エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週のエコシステム更新情報

SurgeのCardanoメインネットローンチで、ノンカストディアル自動取引プラットフォームが導入

MinswapがNIGHTトークンのエアドロップを対象ユーザーに向けて通知、開始は1月29日を予定

EMURGOのCEO、Phillip Ponが2月に香港で開催されるRWAサミットに主要講演者として登壇予定

更新されたCardano憲法が今週批准され、1月24日から施行予定

Zengo WalletがBitcoin DeFi市場拡大を目指してCardanoとの統合を発表。Zengoは、およそ200万のユーザーを擁するノンカストディアルのビットコインウォレット

コアテクノロジー

2026年の幕開けとともに、台帳チームは、ネストされたトランザクションの実装、プロトコル設計、仕様の改善、テストなど、優先度の高い取り組みに引き続き注力しています。

CIP-0118（ネストされたトランザクション）の台帳検証ルールの定義付けを続けました。このCIPの承認により、設計が確定し、ネストされたトランザクションによって可能になる複数の新しい重要なユースケースが明らかになったことは、大きなマイルストーンとなりました。実装面では、Dijkstra開発期のトランザクションおよびそのサブトランザクションのバイナリーフォーマットとHaskell表現を完了しました。ネストされたトランザクションの台帳ルール構造全体を定義し、プレースホルダーとしてのロジックを配置しました。完全な検証ロジックの実装は、今後数週間の主要な焦点となります。

Dijkstra開発期におけるADAマイクロペイメントを可能にする、待望の提案、CIP-159（アカウントアドレスの強化）の第1フェーズの作業も開始されました。 新しいトランザクションフィールドの一つを定義し、より広範な実装をサポートするための準備的なコード変更を行いました。

並行して、共通開発および頒布ライセンス（CDDL）仕様の定義とテスト方法の改善を大きく進めました。これには、CDDL仕様を定義するために使用されるツールcuddleの大幅なリファクタリングが含まれ、開発期をまたいだ重複を減らし、安全性を向上させるクリーンなインターフェイスが導入されました。この取り組みの一環として、仕様上のバグを特定し修正しました。カスタム値ジェネレーターのサポートを追加し、CDDLの制限により以前は不可能だった新しいクラスの適合性テストを可能にしました。

新しいツール\`antigenをリリースし、cuddle\`との統合を開始しました。これが完了すると、台帳デコーダーのネガティブ特性テストが可能になり、今年初めにメインネットで見られたものと同様の、非シリアル化に関するバグを未然に防ぐことができるようになります。

これらの中心的な取り組みに加え、CIP-167（トランザクションからisValidを削除）の承認と完全な実装を完了し、大幅な技術負債に対処し、台帳テストフレームワークの改良を進めました。

スマートコントラクト

PlutusチームはValueプリミティブの実装とコスト計算、および間近に控えた開発期内ハードフォークに必要な残りのすべての開発を完了しました。

UPLC 2025イベントを、カンファレンスでの議論や成果に焦点を当てて振り返ったブログ記事を公開しました。

MLabsとの協力により、最適化したbyteStringToIntegerおよびintegerToByteStringプリミティブを実装しました。これらの変更により、GHC 8のサポートを終了することで利用可能になったghc-bignumライブラリーを活用し、実行時間を「二次」から「線形」に短縮しました。

並行して、複数の長期的な取り組みも継続しました。これには、Plutus V4の初期開発、Philip Wadler教授とのUPLCインライナーの形式検証に関する議論の継続、UPLCランタイムパフォーマンスのさらなる最適化、Plinthのユーザビリティ改善の継続が含まれます。

スケーリング

今年、Mithrilチームは、分散型メッセージキュー（DMQ）ネットワークを通じたプロトコルの分散化、プロトコルの普及拡大、SNARKを用いたSTMライブラリーの進化による簡潔な証明の導入を引き続き優先事項としています。

今週は、SNARKに適したSTMライブラリーの実装に注力し、非再帰型SNARK回路のMVPの開発を継続し、集約前SNARKプリミティブの作業を開始しました。並行して、再帰型SNARK回路のプロトタイプ作成も進めました。 

インフラとノードの実装を完了し、DMQネットワークのデプロイ準備を整えました。参加方法については、最近公開された開発者ブログをご覧ください。MithrilとDMQをCardanoのオプトアウト機能にするための提案の文書化に取り組み、プロトコルセキュリティページの更新を続けました。

VOLTAIRE

Cardanoのガバナンスは2025年に完全な分散化を達成しました。2026年は、憲法委員会および委任代表者（DRep）の圧倒的多数によって批准された新憲法とともに幕を開けました。

1月10日には、Cardano憲法委員会にメンバー1名を追加するガバナンスアクションが執行され、委員の数は規定の最小人数を2名上回る体制となりました。これは、メンバーの一人が辞任した場合や継続不能となる事態に備え、バッファを確保することを目的としています。

Input Output、EMURGO、Cardano財団、Intersect、Midnight Foundationで構成されるCardano Pentad（カルダノペンタッド）は、ネットワーク全体のインフラニーズに焦点を当て、トレジャリーの支援を受けて調整を行う新しい連合体です。Pentadは、断片的なコミュニティ主導の取り組みに頼るのではなく、エコシステムの代表性を維持しつつ、統一された意思決定を行うプロセスを重視しています。

研究

Input Output Research (IOR)チームは、引き続きCardano Visionプログラムへ焦点を当てつつ新年をスタートさせました。 

先月は、基礎研究および技術検証のワークストリームに関する2つのレポート草案をIntersectに提出しました。これらのレポートは、2025年において、各ワークストリームが査読済みの科学から実装可能な設計へと移行していく進捗状況を高レベルで概観したものです。リサーチパートナーシップ担当ディレクターのFergie Millerによる、2025年の成果を振り返る最新の進捗報告動画もご覧ください。

これらのレポートは現在コミュニティレビューのために公開されており、IORはCardanoエコシステムにおける最高の業界基準を反映させるため、皆様の洞察や提案を求めています。対話に参加し、1月23日までにCardanoフォーラムでフィードバックを共有してください。


Weekly development report as of 2026-01-23

Dear community, this report marks the final development update of 2025.

Wishing everyone warm holiday cheer and a wonderful New Year 🎄✨

Here’s to the year ahead — full of fresh progress, new milestones, and shared success!

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

The Cardano ecosystem continues to grow. Currently, there are 2,020 projects being developed, while the number of delegated wallets remains stable at 1.34 million. The total number of native tokens has surpassed 11.03 million, and the number of token policies has increased to 224,768.

Governance participation is also strengthening, with 1,541 delegated representatives (DReps), of which 1,023 are active. Additionally, development activity remains consistent, with 380 GitHub commits recorded this week.

In other news:

The first integration under the Critical Cardano Integrations workstream has been approved, bringing Pyth Lazer oracle to Cardano

Serviceplan Group has officially joined Intersect as an enterprise member

Midnight’s Redemption portal is officially live, and participants can connect wallets to see their thaw dates

The NIGHT token is now trading on multiple exchanges, including Kraken and Kucoin

Cardano Foundation is recruiting service providers to deliver sessions and workshops for the Cardano Accelerator.

CORE TECHNOLOGY

This week, the consensus team completed the LSM-tree work, with the remaining integration across the API, CLI, and node scheduled to land with cardano-node v.10.7. The team also addressed a mempool deadlock commit (1, 2) and resolved a benchmark memory leak for v.10.6.1. For field testing, they prepared a 10.6.1 node with LSM-trees for preliminary relay deployment and compiled an untested per-block-tables prototype as groundwork for LedgerHD in v.10.8. In tooling and experiments, cardano-testnet now supports running with kes-agent, and the team advanced the Leios demo migration to ouroboros-leios, adding traffic control for delay and bandwidth configuration.

SCALING

This week, the Mithril team continued focusing on the SNARK-friendly STM library, simplifying its code and implementing some wrappers for the Jubjub backend. They also made progress by specifying the non-recursive SNARK circuit, assessing constraints on Halo2 verification keys, designing a testing strategy for SNARK circuits, prototyping the recursive SNARK solution, and completing a prototype of the Bitcoin DeFi prover with RISC Zero.

Additionally, they completed the simple aggregator discovery mechanism, worked on improvements to the protocol security page, and completed the second phase of the common aggregator client implementation.

Finally, they worked on CI enhancements by implementing dependency license enforcement and fixing bugs in crate publication, and kept upgrading the Cardano node to v.10.6.

CATALYST

This week, Catalyst turned the spotlight on USDMOfficial, Cardano’s fiat-backed stablecoin developed by Moneta. A major step in strengthening real-world utility across the ecosystem.

They also took a moment to honour Matthew Plomin, whose work and dedication helped shape a pivotal chapter in Cardano’s evolution.
Following this, James Meidinger joined Catalyst for a deep dive into how USDM is poised to accelerate Cardano’s next wave of growth. 

The team also shared key Fund15 updates to keep everyone informed on progress through the review phase.

Reminder: the community review period closes on December 15 at 6:00 AM UTC. Make sure your reviews are submitted before the deadline.

Watch the full town hall and explore the presentation deck for more details.

GOVERNANCE

An essential governance vote is currently live to restore the constitutional committee (CC) to full capacity following a mid-term retirement that has left the body below quorum. Without a fully operational CC, Cardano faces governance paralysis, blocking the ratification of critical network upgrades, treasury withdrawals, and hard forks. DReps and SPOs are urged to ratify the off-chain election of Cardano Curia on-chain before the December 20 deadline to ensure the ecosystem can continue to evolve and adapt. For a full breakdown of the voting thresholds and implications, please check out this detailed infographic and blog post.  

EDUCATION

This week, the education team is reflecting on the successful smart contracts lectures and node demonstration at Florida International University last week. They are also concentrating on the self-paced content of the Cardano education program.



コミュニティの皆様、2025年開発アップデートは本レポートが最後となります。

皆様には、温もりのあるホリデーシーズンと素晴らしい新年をお迎えいただけますようお祈り申し上げます🎄✨

フレッシュな進捗情報、新しいマイルストーン、そして共有された成功に満ちた来年が待っています！

エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

Cardanoエコシステムは成長を続けています。現在、開発中のプロジェクトは2,020件、委任済みウォレット数は134万と安定しています。ネイティブトークンの総数は1,103万を超え、トークンポリシー数は22万4,768に増加しました。

ガバナンスへの参加も強化され、DRep数は1,541人、うち1,023人がアクティブです。開発者の活動も引き続き安定しており、今週は380件のGitHubのコミットが記録されました。

その他のニュース：

Critical Cardano Integrationsワークストリームでの最初の統合が承認され、Pyth LazerオラクルがCardanoに移行

Serviceplan GroupがIntersectにエンタープライズメンバーとして公式参加

Midnight償還ポータルが公式オープン、参加者はウォレットを接続して解凍日の確認が可能に

NIGHTトークンは現在、KrakenやKucoinなど複数の取引所に上場

Cardano財団がCardano Acceleratorのセッションやワークショップを実施するサービスプロバイダーを募集中

コアテクノロジー

コンセンサスチームはLSM-tree作業を完了しました。API、CLI、ノードにおける残りの統合はCardano-node v.10.7で実装される予定です。メモリープールデッドロックのコミット（1、2）に対処し、v.10.6.1のベンチマークのメモリーリークを解消しました。フィールドテストのための予備的なリレーノードのデプロイのためにLSM-treeを備えた10.6.1ノードを準備し、v.10.8のLedgerHDのための基礎作業として、未テストのブロックごとのテーブルのプロトタイプをコンパイルしました。ツールと実験においては、cardano-testnetがkes-agentを使用した実行をサポートするようになりました。Leiosデモのouroboros-leiosへの移行を進め、遅延や帯域幅の設定のためのトラフィック制御を追加しました。

スケーリング

Mithrilチームは、SNARKに適したSTMライブラリーに引き続き焦点を当て、そのコードを簡素化し、Jubjubバックエンド用のラッパーを実装しました。非再帰的なSNARK回路の指定、Halo2検証キーに対する制約の評価、SNARK回路のテスト戦略の設計、再帰的なSNARKソリューションのプロトタイプ作成、RISC Zeroを使用したBitcoin DeFiプルーバーのプロトタイプの完了により、進捗を遂げました。

シンプルなアグリゲーター発見メカニズムを完了し、プロトコルセキュリティページの改善に取り組み、共通アグリゲータークライアント実装の第2フェーズを完了しました。

依存関係ライセンスの強制を実装し、クレート公開におけるバグを修正することでCIを強化し、Cardanoノードv.10.6へのアップグレードを続けました。

CATALYST

Catalystは、Monetaが開発したCardanoのフィアット担保型ステーブルコイン、USDMOfficialにスポットライトを当てました。これは、現実世界での実用性をエコシステム全体で強化する大きな一歩です。

Cardanoの進化における極めて重要な局面の形成に貢献したMatthew Plomin氏の功績と献身に敬意を捧げました。
これに続き、James Meidinger氏がCatalystに参加し、USDMがCardanoの次なる成長の波をどのように加速させる態勢にあるかについて、深い洞察を提供しました。 

レビューフェーズ全体の進捗状況を全員に知らせるために、Fund15の主要な更新情報も共有されました。

リマインダー：コミュニティレビュー期間は日本時間12月15日午後3時に終了します。期限前にレビューが提出されていることを確認してください。

詳細は、タウンホールの全編を視聴し、プレゼンテーションデッキをご覧ください。

ガバナンス

現在、完全に機能する憲法委員会（CC）を復活させるために不可欠なガバナンス投票が進行中です。これは、委員会のメンバーが定足数を下回る原因となった任期途中での引退を受けたものです。完全に機能するCCがないため、Cardanoはガバナンスの麻痺に直面し、重要なネットワークアップグレード、トレジャリーからの引き出し、ハードフォークの批准が妨げられています。エコシステムが進化し、適応し続けることができるよう、DRepとSPOは、12月20日の期限までに、Cardano Curiaのオフチェーン選挙をオンチェーンで批准することが求められています。投票のしきい値と影響についての完全な内訳については、この詳細なインフォグラフィックとブログ記事をチェックしてください。

教育

教育チームは先週フロリダ国際大学で開催されたスマートコントラクト講義とノードデモンストレーションの成功を振り返っています。Cardano教育プログラムの自習型コンテンツにも取り組んでいます。


Weekly development report as of 2025-12-12

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week, Cardano native tokens increased to 11.03m, token policies reached 224,455, and transactions climbed to 116.32m. Delegated wallets held strong at 1.34m, while DReps rose to 1,538. The builder ecosystem remained active with 2,020 projects (836 non-NFT, 1,184 NFT) building, and development activity recorded 323 GitHub commits.

In other news:

The Cardano Foundation’s accelerator program is now open for applications

Midnight is now an enterprise member of Intersect

Midnight’s native token, NIGHT, is now officially live as a Cardano native asset.

CORE TECHNOLOGY

This week, the ledger team completed the full Haskell definition and binary representation of nested transactions, along with the corresponding CDDL specification. Additionally, they addressed technical debt, added the ability to inject a cost model for any Plutus version at startup for testing and benchmarking, optimized memory accounts representation, and improved the usability of several predicate failures.

The team also made good progress on enhancing the CDDL specification with cuddle, which will help reduce code duplication and strengthen property-based testing of CDDL conformance.

WALLETS AND SERVICES

This week, the Lace team launched v.1.32, introducing the new notification center. This feature delivers real-time, cryptographically verified updates from Lace and key ecosystem partners directly in the wallet, helping users stay informed about governance activities and ecosystem news.

This version also enables the Midnight Foundation to share updates with NIGHT holders as the ecosystem grows. The team is now preparing broader subscription options, expanded Web3 coverage, and future mobile support.

Learn more in this blog post.

SCALING

This week, the Mithril team kept focusing on the SNARK-friendly STM library, completing the Schnorr signature scheme and modules reorganization, and implementing some wrappers for the Jubjub backend. They also progressed on specifying the non-recursive SNARK circuit, assessing constraints on Halo2 verification keys, prototyping the recursive SNARK solution, and prototyping the Bitcoin DeFi prover with RISC Zero.

Additionally, they continued implementing a simple aggregator discovery mechanism, worked on improvements to the protocol security page, and completed enhancements to the end-to-end tests to better support the introduction of new features and improve the reliability of the backward-compatibility test.

Finally, they worked on the second phase of the common aggregator client implementation and kept upgrading to Cardano node v.10.6.

The Hydra team implemented the ‘SafeClose’ feature and continued working on the partial fanout and chain following approach. They also ran a Hydra node on a Raspberry Pi, added an API to retrieve the head start timestamp, and added Blockfrost support to the TUI. 

Finally, the team released Hydra v.1.2.0. Hydra was also featured as a bonus track at the Cardano Hackathon 2025 during India Blockchain Week, where the winning team of the main Cardano track was a Hydra project. This marked Hydra’s first hackathon, with an impressive turnout of 400 participants.

CATALYST

This week, the Catalyst town hall offered timely insights as the Fund15 process enters the review period. A community reviewer and a proposer were invited to share perspectives from both sides of the process, outlining what reviewers typically look for, how proposers can strengthen their submissions, and how each role supports a healthier evaluation ecosystem.

The Catalyst team also shared key Fund15 updates to help the community prepare for the next phase. Catch up with the video here or see the deck.

Fund15 has officially wrapped up submissions, and the numbers reflect another strong round of community momentum. 540 proposers submitted a total of 761 proposals across all challenge categories, showcasing the breadth of ideas driving innovation on Cardano.

The next phase is the community review period, where reviewers assess proposals, identify strengths and weaknesses, and provide clear insights to support informed voting. This stage plays a critical role in ensuring transparency, accountability, and effective community-driven decision making. Read more about the review period here.

VOLTAIRE

Intersect held its 2025 Annual Members’ Meeting as a 23-hour event spanning 12 time zones, using an interactive virtual space developed in cooperation with Clay Nation.

The event was livestreamed for its full runtime on the Intersect YouTube account, with over 200 live views on the day.

The virtual space had six dedicated breakout rooms, where participants could connect and discuss the year that had passed and the year ahead.

While this was a pilot of this new tool, with the expected bugs and learnings, it achieved something important. It created a shared space for members across time zones to connect, participate, and help shape the future of Intersect.

This pilot is not only a foundation for next year’s AMM but also a foundation for how Intersect will regularly connect with the community. The Intersect Virtual Hub will remain open and accessible to members via the Intersect members' area.

EDUCATION

This week, the education team are on the ground at Florida International University delivering lectures on smart contracts and a Cardano node demonstration. Work is progressing on the self-paced content, which will be launching very soon.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週、Cardanoネイティブトークンは1.103万に増加し、トークンポリシーは22万4,455に達し、トランザクションは1億1.632万に上りました。委任済みウォレット数は134万と引き続き堅調で、DRepは1,538人に上昇しました。ビルダーのエコシステムも引き続きアクティブで、プロジェクト数は2,020（非NFT 836、NFT 1,184）を構築中であり、開発活動に関しては323のGitHubコミットを記録しました。

その他のニュース：

Cardano財団のアクセラレータープログラムは現在申請受付中

MidnightがIntersectのエンタープライズメンバーに

MidnightのネイティブトークンNIGHTは、Cardanoのネイティブアセットとして正式に稼働中

コアテクノロジー

台帳チームは、対応するCDDL仕様と共に、ネストされたトランザクションの完全なHaskell定義とバイナリ表現を完了しました。技術負債に対処し、テストとベンチマーキング用に、起動時に任意のPlutusバージョンのコストモデルを注入する機能を追加したほか、メモリー勘定の表現を最適化し、述語失敗のユーザビリティを改善しました。

コードの重複を減らし、CDDL適合性のプロパティベーステストの強化に役立つcuddleを使用したCDDL仕様の強化で大きな進捗を遂げました。

ウォレットとサービス

Laceチームはv.1.32をリリースし、新しい通知センターを導入しました。この機能は、Laceと主要なエコシステムパートナーからのリアルタイムで暗号的に検証された更新情報をウォレットに直接配信し、ユーザーがガバナンス活動やエコシステムのニュースについて最新の情報を得られるようにします。

このバージョンでは、エコシステムが成長する中で、Midnight FoundationがNIGHT保有者と更新情報を共有することもできます。現在、サブスクリプションオプションの拡大、Web3カバレッジの拡張、将来のモバイルサポートを準備しています。

詳細は、こちらのブログ記事をご覧ください。

スケーリング

MithrilチームはSNARKに適したSTMライブラリーに引き続き焦点を当て、シュノア署名スキームとモジュールの再編成を完了し、Jubjubバックエンド用のいくつかのラッパーを実装しました。非再帰的なSNARK回路の指定を進め、Halo2検証キーに対する制約を評価し、再帰的なSNARKソリューションのプロトタイプを作成し、RISC Zeroを使用してBitcoin DeFiプルーバーのプロトタイプを作成しました。

シンプルなアグリゲーター発見メカニズムの実装を継続し、プロトコルセキュリティページの改善に取り組み、新機能の導入サポート改善、後方互換性テストの信頼性向上を目指したエンドツーエンドテストの強化を完了しました。

共通アグリゲータークライアント実装の第2フェーズに取り組み、Cardanoノードv.10.6へのアップグレードを続けました。

Hydraチームは‘SafeClose’機能を実装し、部分的なファンアウトとチェーン追従アプローチに関する作業を継続しました。Raspberry PiでHydraノードを実行し、headの開始タイムスタンプを取得するためのAPIを追加し、TUIにBlockfrostのサポートを追加しました。 

Hydra v.1.2.0をリリースしました。HydraはIndia Blockchain Week期間中のCardano Hackathon 2025でボーナストラックとして紹介されました。このとき、Cardanoのメイントラックの優勝チームがHydraプロジェクトでした。これはHydraにとって初めてのハッカソンであり、400人もの参加者がありました。

CATALYST

Catalystタウンホールでは、Fund15のプロセスがレビュー期間に入るにあたり、時宜を得た洞察が提供されました。プロセスの両サイドからの視点を共有するため、「コミュニティレビュアー」と「提案者」が招待されました。レビュアーが通常何を求めているか、提案者が提出物をどのように強化できるか、それぞれの役割がより健全な評価エコシステムをどのようにサポートしているかを概説しました。

コミュニティが次のフェーズの準備をするのに役立つFund15の重要な更新情報も共有されました。この動画でキャッチアップするか、デッキをご覧ください。

Fund15の提出は正式に締め切られました。その数字は、このラウンドがまたしてもコミュニティの勢いを反映する強力なものであることを示しています。すべてのチャレンジカテゴリーを通じて540人の提案者が合計761の提案を提出しました。これは、Cardanoのイノベーションを推進するアイデアの幅広さを物語っています。

次のフェーズはコミュニティレビュー期間です。ここでは、レビュアーが提案を評価し、強みと弱みを特定し、情報に基づいた投票をサポートするために明確な洞察を提供します。この段階は、透明性、説明責任、コミュニティ主導による効果的な意思決定を確実にする上で、重要な役割を果たします。レビュー期間についての詳細はこちらをご覧ください。

VOLTAIRE

Intersectは、Clay Nationと協力して開発したインタラクティブな仮想空間を使用し、12のタイムゾーンにまたがる23時間のイベントとして2025年年次総会（AMM）を開催しました。

このイベントは、IntersectのYouTubeアカウントですべて生配信され、当日は200以上のライブ視聴がありました。

この仮想スペースには6つの専用ブレイクアウトルームが設けられ、参加者はつながり、行く年と来る年について議論することができました。

これはこの新しいツールのパイロットであり、想定していたようにバグや教訓を得ただけでなく、重要なことを達成しました。さまざまなタイムゾーンからのメンバーがアクセスし、参加し、Intersectの未来を形作るための共有スペースを創出したのです。

この試験運用は、来年のAMMのための基盤となるだけでなく、Intersectがコミュニティと定期的につながる方法の基盤にもなります。Intersectの仮想ハブは、Intersectメンバーエリアを介して開かれたままとなっており、メンバーがアクセス可能です。

教育

教育チームはフロリダ国際大学（FIU）に現地入りし、スマートコントラクトに関する講義とCardanoノードのデモンストレーションを実施しています。自習型コンテンツに関する作業は進行中で、まもなく配信される予定です。


Weekly development report as of 2025-12-05

ECOSYSTEM UPDATES

The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.

This week, the Cardano ecosystem saw continued growth, with 2,020 projects building on the network (836 non-NFT and 1,184 NFT), 1.34 million delegated wallets, 11.02 million native tokens, and 224,241 token policies. Network activity reached 115.48 million transactions, while the number of DReps increased to 1,533. Finally, this week's GitHub activity reached 322 commits.

In other news:

Input | Output launched the Leios development tracker this week – learn more in the scaling section

Cardano’s founding entities and the Midnight Foundation submitted a joint budget info action for critical integrations

Farmroll.io, built on Cardano, is now live – the tool lets users create and trade AI agents

Midnight has been nominated for BeInCrypto’s breakthrough of the year award, and voting is now open

The Cardano Foundation’s info action to secure generic top-level domains has been approved.

CORE TECHNOLOGY

This week, the networking team worked on the upcoming Cardano node v.10.6, resolving some issues affecting cardano-tracer, published an updated network framework, and addressed edge cases in topology parsing. The release will ship with P2P-only networking. Work continued on dmq-node, including a successful end-to-end test using the Mithril Rust client, a fix in the annotated driver, and availability of a static build for x86\_64-linux-musl. Integration with cardano-tracer is underway to ensure familiar monitoring for SPOs.

Additionally, the team improved peer selection by fixing discrepancies and enhancing test coverage, contributed partial WASM support to ouroboros-network, and made progress on reducing technical debt. This included restructuring the ouroboros-network package for easier maintenance, simplifying diffusion-related components, and completing outstanding tasks in the consensus diffusion package. See this development update for more details.

The benchmarking team completed node v.10.6 pre-release benchmarking and continued compiler performance testing with GHC 9.12. Development progressed on the queryable timeseries prototype and the message-based API for cardano-tracer, alongside infrastructure work to optimize trace forwarding.

The team also delivered new quality-of-life tracing features, including Prometheus service discovery, while removing a significant amount of technical debt. In parallel, they advanced Leios efforts by refining the process specification for conformance and performance testing and revisiting simulation results. Finally, work continued on node diversity with a new system-conformance testing framework based on linear temporal logic.

The consensus team participated in the November 2025 incident response, providing analysis on potential intervention scenarios and tracking chain progression metrics. They also merged documentation of the Leios protocol burst attack threat model, strengthening the protocol's security foundation ahead of load testing and mitigation strategy development. Finally, the team prepared for the Leios November demo, making significant progress on observability infrastructure using Grafana and Prometheus and on demo packaging to streamline deployment. 

SCALING

This week, the Leios team released a new public development tracker that showcases continuous global progress on Ouroboros Leios. The tracker provides a consolidated space for monitoring project activity, enabling tighter resource coordination to drive improved development cadence. For more details, read the blog post, check out the tracker, and see a walkthrough video.

The Mithril team focused on the SNARK-friendly STM library, completing its architecture design, refactoring error handling, and implementing the Schnorr signature scheme. They also made good progress preparing the specifications for the non-recursive SNARK circuit, prototyping the recursive SNARK solution, and experimenting with a Jubjub curve implementation in the BLST library.

Additionally, they continued implementing a simple aggregator discovery mechanism, worked on improvements to the protocol security page, and enhanced the end-to-end tests to better support the introduction of new features.

Finally, they fixed an incident with certification that stopped on mainnet and preview networks, and started upgrading to Cardano node v.10.6.

CATALYST

The moment has arrived! The submission window for Project Catalyst Fund15 closed on November 27 at 6 AM UTC. The review period begins on December 2.

This week’s town hall included an overview of GovChain Lab’s work to support participation in Brazil through focused education initiatives. The Catalyst team also presented upcoming changes to the milestone module and provided a first look at key improvements. Read more about the module updates here.

If you missed the town hall, watch the recording or review the full presentation deck.

VOLTAIRE

The big news in governance this week is the Intersect annual members’ meeting, which will run for 24 hours beginning at 12.01 am UTC on Saturday, November 29.

To truly connect the global membership, spanning continents and time zones, Intersect will host this year's event in the Intersect Virtual Hub. This digital environment will break down geographical barriers and create a truly inclusive experience where every member, regardless of where they are in the world, can participate fully and feel connected to the community. The virtual hub will run for a full 24 hours across 12 time zones, starting in Australia with AEDT. A welcome address, followed by a regional session, is scheduled for each time zone.

Participants are encouraged to join the event at any time throughout its duration to experience other regional perspectives. These cross-regional connections are often where some of the most innovative ideas and strongest partnerships emerge from.

Find out more on the registration page.

EDUCATION

The education team is preparing for next week’s in-person lectures at Florida International University in Miami. The team will present a learning session on Aiken and smart contracts, as well as a Cardano node workshop, to students and faculty staff.

Additionally, preparations are underway to launch the self-paced Cardano education program, and work continues on translations of Mastering Cardano into Spanish and Japanese.



エコシステム

本セクションの情報は、一般に利用可能な情報源に基づいており、情報提供のみを目的として提供されています。言及されているプロジェクト、製品、サービスを推奨するものではありません。

今週も、Cardanoエコシステムは引き続き成長傾向にありました。2,020件のプロジェクトがネットワークで構築されており（非NFT836、NFT1,184）、委任済みウォレット数は134万、ネイティブトークンは1,102万、トークンポリシーは22万4,241に上ります。ネットワークアクティビティは1億1,548万トランザクションに達し、DRep数は1,533に増加しました。GitHubアクティビティは322コミットに達しています。

その他のニュース：

Input | Outputは今週Leios開発トラッカーを公開。詳細はスケーリングセクションを参照

Cardano設立諸団体とMidnight Foundationが、重要な統合のための予算情報アクションを共同提出

Cardanoに構築された、AIエージェントの作成、取引きツールFarmroll.ioが稼働開始

MidnightがBeInCryptoの年間最優秀賞ブレイクスルー賞にノミネート。現在投票投票受付中

gTLDを保護するためのCardano財団の情報アクションが承認される

コアテクノロジー

ネットワークチームはCardanoノードv.10.6に取り組み、Cardano-tracerに影響を与えている問題を解決し、更新したネットワークフレームワークを公開し、トポロジー解析におけるエッジケースに対処しました。このリリースは、P2P専用ネットワークに付属する予定です。Mithril Rustクライアントを使ったエンドツーエンドテストの成功、注釈付きドライバーの修正、x86\_64-linux-musl用の静的ビルドの利用など、mq-nodeに関する作業を続けました。SPOが使い慣れた監視機能を使えるようにするために、Cardano-tracerとの統合を進めています。

不一致を修正してテストカバレッジを強化することでピア選択を改善し、WASMの部分的なサポートでouroboros-networkに貢献し、技術負債の削減を進めました。これには、メンテナンスを容易にするためのouroboros-networkパッケージの再構築、伝播関連のコンポーネントの単純化、コンセンサス伝播パッケージにおける未完タスクの完了が含まれます。詳細は、開発更新情報を参照してください。

ベンチマークチームはノードv.10.6プレリリースのベンチマークを完了し、GHC 9.12でコンパイラーのパフォーマンステストを継続しました。クエリ可能な時系列のプロトタイプとメッセージベースcardano-tracer用APIの開発を進め、トレース転送を最適化するためのインフラを整備しました。

PrometheusのサービスディスカバリーなどのQOLトレース機能を新たに提供し、技術負債を大幅に削減しました。並行して、適合性テストとパフォーマンステストのためのプロセス仕様を精緻化し、シミュレーション結果を再検討するなど、Leios関連の作業も進めました。線形時相論理に基づく新しいシステム適合性テストフレームワークを用いて、ノード多様性に関する作業を続けました。

コンセンサスチームは、2025年11月のインシデント対応に参加し、潜在的な介入シナリオに関する分析を提供し、チェーンの進行メトリクスを追跡しました。Leiosプロトコルバースト攻撃の脅威モデルドキュメントをマージし、負荷テストと緩和戦略の開発に先んじてプロトコルのセキュリティ基盤を強化しました。Leiosの11月のデモに向けて準備を行い、GrafanaとPrometheusを使用した可観測性インフラと、デプロイを合理化するためのデモパッケージで大きく前進しました。 

スケーリング

Leiosチームは、世界各地で継続的に行われるOuroboros Leiosの開発を示す新しい開発トラッカーを公開しました。このトラッカーは、プロジェクトの活動を監視するための統合されたスペースを提供し、より緊密なリソース調整を可能にして、開発ケイデンスの改善を促します。詳細は、ブログ記事を読み、トラッカーをチェックし、ウォークスルー動画をご覧ください。

MithrilチームはSNARKに適したSTMライブラリーに焦点を当て、アーキテクチャー設計を完成させ、 エラー処理をリファクタリングし、Schnorr署名方式を実装しました。非再帰的SNARK回路の仕様を準備し、再帰的SNARKソリューションのプロトタイプを作成し、BLSTライブラリーにおけるJubjub曲線の実装を実験するなど、大きく進展しました。

シンプルなアグリゲーター発見メカニズムの実装を継続し、プロトコルセキュリティページの改善に取り組み、新しい機能の導入をより良くサポートするためにエンドツーエンドテストを強化しました。

メインネットとプレビューネットワークで停止していた証明に関するインシデントを修正し、Cardanoノードv.10.6へのアップグレードを開始しました。

CATALYST

Project Catalyst Fund15の提出受付は日本時間11月27日午後3時に締め切られました。審査期間は12月2日に始まります。

今週のタウンホールでは、焦点を絞った教育イニシアチブを通じてブラジルにおける参加を支援するGovChain Labの活動の概要が紹介されました。Catalystチームはまた、マイルストーンモジュールの今後の変更点を提示し、主要な改善点の最初のプレビューを提供しました。モジュールの更新についての詳細はこちらをご覧ください。

タウンホールに参加しなかった場合は、録画やプレゼンテーション資料をチェックしてください。

VOLTAIRE

今週のガバナンスのビッグニュースは、Intersectの年次総会が日本時間11月29日土曜日午前09:01から24時間にわたって開催されることです。

複数の大陸やタイムゾーンにグローバルにまたがるメンバーを真に結びつけるために、Intersectは今年のイベントをIntersect Virtual Hubで開催します。このデジタル環境は、地理的な障壁を打ち破り、世界のどこにいても、すべてのメンバーが完全に参加し、コミュニティとのつながりを感じることができる真に包摂的な体験を創出します。この仮想ハブは、12のタイムゾーンにわたって24時間稼働を続けます。オーストラリアのAEDTからスタートし、各タイムゾーンで、歓迎の挨拶と地域的なセッションが予定されています。

この間、参加者はいつでもイベントに参加し、他の地域の視点を体験することができます。こうした地域をまたぐつながりから、もっとも革新的なアイデアや強力なパートナーシップが生まれることはままあります。

詳細は、登録ページを参照してください。

教育

教育チームは来週マイアミのフロリダ国際大学で行われる対面講義の準備をしています。Aikenとスマートコントラクトに関する学習セッションと、Cardanoノードワークショップを学生と教職員に提供します。

自習型のCardano教育プログラムの立ち上げ準備が進められているほか、『Mastering Cardano』のスペイン語と日本語への翻訳作業も続けられています。


Weekly development report as of 2025-11-28

CORE TECHNOLOGY

On November 21, 2025, the Cardano mainnet experienced a chain partition caused by a malformed delegation transaction that triggered a deserialization bug. Teams from Input | Output, Cardano Foundation, EMURGO, Intersect, exchanges, security experts, technical community leaders, and many stake pool operators coordinated a joint response and released a hotfix, node v.10.5.3. A working group was set up to reconcile data and track network convergence. No user funds were lost, and most wallets required no action while the network moved toward restoring a single canonical chain.

A full review is underway and will be published once data reconciliation is complete. Current priorities include improving test coverage for edge cases and legacy code, tightening coordination and timing of node upgrades, and enhancing monitoring and communication so issues are detected and addressed even faster. Intersect will also be running a code-quality review, and governance discussions are examining security research and how to incentivize testing on testnets rather than mainnet.

Read the full incident report – facts at a glance – here.

The ledger team defined sub-transactions for nested transactions in the Dijkstra era. They also reduced duplication in the CDDL transaction specification, with further consolidation in progress. For Dijkstra, they hardened serialization to reject duplicate elements on the wire — an issue that could not be addressed retroactively for earlier eras.

In addition, the team removed deprecated functionality, reduced ledger-state memory usage, improved performance at the epoch boundary, and resolved several conformance test issues.

SMART CONTRACTS

The Plutus team is finalizing work for the upcoming intra-era hard fork. They finalized the costing for four Value primitives, with the remaining three in progress. The final step will be end-to-end testing of all new features planned for activation. The team is also preparing a blog post on the UPLC 2025 event and continues working on other items, such as support for case analysis related to Data.

WALLETS AND SERVICES

This week, the Lace team released Lace v.1.31. This update enables in-wallet token swaps for Cardano native assets via SteelSwap, brings Bitcoin wallets to general availability through a phased rollout, and improves responsiveness with optimized API request batching. For full details, setup guidance, and tips, see the Lace v1.31 release post.

SCALING

This week, the Mithril team completed the first phase of decentralizing configuration parameters and made good progress on implementing a simple aggregator discovery mechanism. Additionally, they kept working on the SNARK-friendly STM library by designing its architecture, implementing the Schnorr signature scheme, refactoring error handling, and experimenting with a Jubjub curve implementation in the BLST library.

Finally, they fixed some bugs, made enhancements to the CI, and continued improving the protocol security page.

CATALYST

Community feedback remains key for the Project Catalyst roadmap, ensuring that progress stays aligned with real needs across the ecosystem.

On November 20, Catalyst will be released ‘Milestone Module’ updates based on insights from the community to deliver focused enhancements to core functionality and governance processes. 

A major highlight of this release is the set of meaningful upgrades to the ‘Milestone Module’, highlighting commitment to transparency and accountability: 

A new homepage

‘New Incoming Message’ notification

Better search and sort

Hidden reviews for unbiased feedback

Milestone and proof of achievement (PoA) templates

Mandatory approval checkboxes

Resubmission tracking

New tools for funded projects.

All updates will be shared on the Catalyst documentation site.
Catch up on the latest news during the recent Project Catalyst town hall #216, or browse through the slide deck. 

EDUCATION

The education team is reflecting on the recent successful Cardano Developer course and hackathon in Buenos Aires, Argentina.  

Work continues on the translations for Mastering Cardano in both Spanish and Japanese, and preparations are underway to launch the self-paced Cardano education program.



コアテクノロジー

2025年11月21日、Cardanoメインネットで、不正な形式の委任トランザクションが逆シリアル化バグをトリガーしたによって、チェーン分岐が発生しました。Input | Output、Cardano財団、EMURGO、Intersect、取引所、セキュリティ専門家、技術コミュニティのリーダー、多くのステークプールオペレーターが合同で対応にあたり、修正プログラムnode v.10.5.3をリリースしました。データの整合性を取り、ネットワークの収束を追跡するために、ワーキンググループが設置されました。ユーザーの資金が失われることはなく、ネットワークが単一の正準チェーンの復元に向けて動いている間、ほとんどのウォレットでユーザー側の操作は必要ありませんでした。

現在完全なレビューを実施しており、データの整合が完了し次第、公開されます。現在の優先事項には、エッジケースとレガシーコードのテストカバレッジの改善、ノードアップグレードの調整とタイミングの厳格化、問題の検出と対処をより迅速に行うための監視とコミュニケーションの強化が含まれています。Intersectはコード品質のレビューを実施する予定で、ガバナンスに関する議論では、セキュリティ研究と、メインネットではなくテストネットでのテストにどのようにインセンティブを与えるかが検討されています。

完全なインシデントレポート -一目でわかる事実–はこちらからご覧ください。

台帳チームはDijkstra（ダイクストラ）期におけるネストされたトランザクションのサブトランザクションを定義しました。CDDLトランザクション仕様の重複を減らし、さらなる統合を進めています。Dijkstraでは、ワイヤー上の重複する要素を拒否するようにシリアル化を厳格化しました。これは以前の開発期から積み残されている課題でした。

非推奨の機能を削除し、台帳ステートのメモリー使用量を減らし、エポック境界でのパフォーマンスを改善し、コンフォーマンステストの不具合を解決しました。

スマートコントラクト

Plutusチームは、来る開発期内ハードフォークの最終作業を行っています。4つのValueプリミティブのコストを確定し、現在残りの3つを進めています。最後にアクティベーションが予定されているすべての新機能のエンドツーエンドテストを実施する予定です。UPLC 2025イベントに関するブログ記事も準備中です。また、Dataに関するケース分析のサポートなど、他の作業も続けています。

ウォレットとサービス

LaceチームはLace v.1.31をリリースしました。今回の更新では、SteelSwapを介したCardanoネイティブ資産のウォレット内トークンスワップや、段階的なロールアウトによるビットコインウォレットの一般利用を可能にし、APIリクエストのバッチ処理を最適化して応答性を向上させました。詳細情報、セットアップガイダンス、役立つ情報については、Lace v1.31リリース記事を参照してください。

スケーリング

Mithrilチームは、設定パラメーター分散化の第1フェーズを完了し、単純なアグリゲーター検出メカニズムの実装を進めました。SNARKに適したSTMライブラリーのアーキテクチャー設計、Schnorr署名スキームの実装、エラー処理のリファクタリング、BLSTライブラリーにおけるJubjub曲線実装の実験などに関する作業も継続しました。

バグを修正し、CIを強化し、プロトコルセキュリティページの改善を続けました。

Catalyst

Communityのフィードバックは、Project Catalystのロードマップに欠かせません。これは、エコシステム全体の真のニーズに沿って進むために極めて重要です。

11月20日、Catalystはコミュニティからの洞察に基づいた「マイルストーンモジュール」のアップデートをリリースしました。これは、コア機能とガバナンスプロセスに焦点を当てた強化を提供するものです。 

今回のリリースの主なハイライトは、透明性と説明責任への取り組みを強調した、「マイルストーンモジュール」の有意義な一連のアップグレードです。 

新しいホームページ

「新しい着信メッセージ」通知

検索と並べ替えの改良

偏りのないフィードバックのためのレビュー非表示

マイルストーンと達成証明（PoA）テンプレート

必須承認チェックボックス

再提出の追跡

資金提供を受けたプロジェクトのための新ツール

すべてのアップデートはCatalyst Documentationサイトで共有されます。

先日行われた第216回Project Catalystタウンホールやスライドデッキで最新情報を確認してください。 

教育

教育チームはアルゼンチンのブエノスアイレスで成功を収めたCardano開発者コースとハッカソンを振り返っています。  

『Mastering Cardano』は日本語とスペイン語版の翻訳を続けているほか、自習型のCardano教育プログラムの開始準備を進めています。


Weekly development report as of 2025-11-21

CORE TECHNOLOGY

This week, the consensus team started troubleshooting the 'bufferbloat' issue observed during the October 2025 Leios demo by opening an issue. They also focused on resource management and stability by integrating additional LSM-tree changes into cardano-node.

The team resolved race conditions and issues with double read-lock acquisitions in LedgerDb, while also enhancing its resource management commits(1,2). Finally, they improved memory management by preventing the retention of the genesis ledger state, which is particularly crucial for benchmarking.

SCALING

This week, the Mithril team released the 2543.1 hotfix distribution to address some signing issues. The team has nearly completed the first phase of decentralizing configuration parameters and continued implementing a simple aggregator discovery mechanism. They also advanced work on the SNARK-friendly STM library by designing its architecture, implementing the Schnorr signature scheme, refactoring error handling, and experimenting with a Jubjub curve implementation in the BLST library.

Finally, they worked on refactoring the interface used by the signer to interact with the aggregator and improved the protocol security page.

This week, the Hydra team delivered several key improvements. They enhanced the partial fanout functionality and improved logging for failed HTTP requests. A new API endpoint was added to retrieve the time when a head was opened. A significant safety feature, the ‘SafeClose’ client input, was developed to prevent accidental closures when unburned minted tokens are still present. Furthermore, they made progress on chain synchronization to keep heads aligned with the network state. Finally, the team showcased the new VTech Hydra SDK for ecosystem builders.

VOLTAIRE

The Intersect committee election results have been compiled and audited. The number of candidates and the voter turnout both exceeded expectations, and the future of decentralized governance at Intersect looks assured. The full results are posted on the Intersect knowledge base.

CATALYST

Fund15 launched last week, and proposal submission is now officially open! This round introduces a brand new category, Midnight: Compact DApps, sponsored by Midnight Foundation along with three Cardano-focused categories: Cardano Partners, Cardano Use Cases, and Cardano Open. Launch Guide here.

The Midnight category will fund open-source proof-of-concept (PoC) DApps that showcase real-world applications of Midnight’s privacy technology.

Fund15 takes Catalyst to a new chapter: evolving from a Cardano-centric program into a multichain accelerator that empowers builders across ecosystems. By leveraging Catalyst’s community-driven infrastructure and voting framework, the initiative aims to identify promising projects and accelerate the development of practical, privacy-focused tools for developers.

Submission deadline: 6AM on November 27, 2025

Midnight category

Compact DApps

To accelerate developer adoption of Midnight by funding essential open-source reference DApps. This category is seeking reference DApps, and the Midnight Foundation will sponsor funding.

Budget available: $USDM 250,000.00
Proposal range: From $USDM 2,500 to $USDM 10,000.
Details: here

Cardano categories

Cardano partners: tier-1 enterprise integrations
This specialized funding category is designed to forge strategic alliances by supporting ambitious Cardano-based proposals that pilot real-world solutions with Tier-1 enterprises, driving adoption, high-impact R\&D, and meaningful co-marketing opportunities.

Budget available: ₳10,000,000
Proposal range: From ₳250,000 to ₳750,000
Details: here

Cardano use cases: prototype and launch

This category funds entrepreneurial teams and developers — whether experienced in Cardano or new to it—providing the resources to build and launch novel on-chain prototypes that accelerate the growth and utility of the Cardano ecosystem.

Budget available: ₳6,000,000
Proposal range: From ₳15,000 to ₳200,000
Details: here

Cardano open: ecosystem

This category will fund non-technical initiatives that drive grassroots ecosystem growth, education, research, and community engagement to broaden Cardano’s reach. This category focuses on building the creative capacity of our passionate global community.

Budget available: ₳2,500,000
Proposal range: ₳15,000 to ₳60,000
Details: here

EDUCATION

The education team is concentrating its efforts in Buenos Aires, Argentina, this week, where it is driving a critical developer initiative and conducting significant educational outreach.

Team members are currently on site at the UTN in Buenos Aires, Argentina, for the in-person component of the Cardano developer course. This course is designed to empower participants to build on Cardano and has over 50 registered attendees. Simultaneously, the team is working at the IO booth as part of the broader Argentina Tech Week, promoting IO education activities and Mastering Cardano, and supporting the local hackathon.

In parallel with the on-site activities, the team has successfully completed the remaining modules of phase 1 of the self-paced Cardano education program. The team encourages the community to watch this space for details on where to start your learning journey with the newly completed content.



コアテクノロジー

コンセンサスチームは2025年10月のLeiosデモで観察されたバッファブロート問題に関して、Issueを作成してトラブルシューティングを開始しました。追加のLSMツリーの変更を'cardano-node'に統合するなど、リソース管理と安定性にも注力しました。LedgerDbにおける競合状態や二重読み取りロック取得に関する問題を解決する傍ら、リソース管理コミット（1、2）を強化しました。特にベンチマークにとって重要なジェネシス台帳ステートの保持を防ぐことによって、メモリー管理を改善しました。

スケーリング

Mithrilチームは署名問題に対処するためのホットフィックスディストリビューション2543.1をリリースしました。

設定パラメーターの分散化の第1フェーズをほぼ完了し、単純なアグリゲーター検出メカニズムの実装を継続しました。SNARKに適したSTMライブラリーのアーキテクチャー設計、Schnorr署名スキームの実装、エラー処理のリファクタリング、BLSTライブラリーにおけるJubjub曲線実装の実験などを進めました。

署名者がアグリゲーターと対話するために使用するインターフェイスのリファクタリングに取り組み、プロトコルセキュリティページを改善しました。

Hydraチームはいくつかの進歩を遂げました。部分的なファンアウト機能を改善し、失敗したHTTPリクエストのログ機能を強化し、ヘッドが開かれた時間を取得するAPIを追加しました。未焼却のミントされたトークンが存在する場合にクローズを防止するための‘SafeClose’クライアントインプットを開発しました。チェーン同期に関しても進捗し、ヘッドがネットワークと整合した状態にあることが保証されるようになりました。ビルダー向けに新しいVTech Hydra SDKを公開しました。

VOLTAIRE

インターセクト委員会の選挙結果は集計、監査を終えました。候補者数と投票率はどちらも予想を上回り、Intersectにおける分散型ガバナンスの将来は確実なものと思われます。結果の詳細はIntersectナレッジベースに掲載されています。

CATALYST

Fund15は先週立ち上げられ、提案書の提出が正式に開始されました。このラウンドでは、Midnight Foundationがスポンサーとなる新しいカテゴリー「Midnight: Compact DApps」が導入されました。

この新しいカテゴリーは、Midnightのプライバシー技術の実世界におけるユースケースを示すオープンソースの概念実証となるDAppに資金を提供するものです。

Fund15で、Catalystは新しい章へと進んでいます。Cardano中心のプログラムから複数のエコシステムのビルダーを支援するマルチチェーンアクセラレーターへと進化していきます。このイニシアチブは、Catalystのコミュニティ主導のインフラと投票フレームワークを活用することで、有望なプロジェクトを特定し、開発者向けの実用的でプライバシーに焦点を当てたツールの開発を加速することを目指しています。

提出期限：2025年11月27日

Midnight Category

Compact DApps
重点分野

ガバナンス：加者のプライバシーを保護しつつ、公平性と監査可能性を確保する市民プラットフォーム

AI：パフォーマンスを損なうことなくユーザーの同意を確実にし、データを責任を持って扱うプライバシー対応AIシステム

医療：プライバシー保護インフラ上に構築された、患者所有のデータシステム、研究ネットワーク、遠隔医療ツール

ファイナンス：プログラム可能なプライバシーを活用したコンプライアンス対応の金融プロダクトで、プライベートな信用市場、規制されたDeFiレール、革新的なデジタルバンキングソリューションなど

斬新なコンセプト：Midnightのプライバシー機能を独自の方法で活用する、他の業界における革新的なアプリケーション

各DAppは、スコープは小規模でありながら完全に機能し、再利用可能なコード、ドキュメント、他の開発者がプロジェクトをローカルで実行し、適合させられるような動作するデモUIを備える必要があります。

利用可能な予算：$USDM 250,000.00
提案範囲：$USDM 2,500～$USDM 10,000

Cardano Categories

Cardano Partners：Tier-1 Enterprise Integrations
戦略的提携を構築するために設計されたこの専門的な資金提供カテゴリーは、Cardanoエコシステムを世界の主要な組織と結びつけます。これは特に、業界の巨人が抱える実世界の課題を解決するために、Cardanoベースのソリューションを実装し、試験的に導入する野心的な提案を支援します。   世界的に認知されている一流（Tier 1）企業が主導または協力する、影響力の高いR\&Dの試験導入と統合に資金を提供し、Cardanoの一般採用を促進し、重要な共同マーケティングの機会を創出します。

利用可能な予算：₳10,000,000
提案の範囲：₳250,000～₳750,000

Cardano Use Cases：Prototype & Launch
このカテゴリーは、Cardanoエコシステムを構築するテクニカルクリエイターに資金を提供することに特化しています。起業家チームやエンジニア、Cardanoネイティブまたは新規参加を問わず経験豊富なブロックチェーン開発者、そして新しいオンチェーンユーティリティのアイデアとそれを構築するスキルを持つ小規模でアジャイルなチームを探しています。    基盤となる研究と設計をすでに経た斬新なプロトタイプを構築し、立ち上げるためのリソースを起業家個人やチームに提供して、Cardanoのための新しいオンチェーンユーティリティの提供を加速します。
利用可能な予算：₳6,000,000
提案の範囲：₳250,000～₳750,000

教育

教育チームは、アルゼンチンのブエノスアイレスで、重要な開発者イニシアチブの推進と、重要な教育アウトリーチの実施に邁進しました。

チームメンバーは現在、UTNでのCardano開発者コースの対面講義のためにブエノスアイレスに行っています。このコースは、参加者がCardanoで構築できるようなプログラムになっており、50人以上の参加者が登録しています。同時に、Argentina Tech Weekの一環として設置されたIOブースで、IOの教育活動と『Mastering Cardano』の宣伝活動を行い、地元のハッカソンを支援しています。

現場での活動と並行して、自習型のCardano教育プログラムのフェーズ1の残りのモジュールを無事完了しました。コミュニティには、新しいコンテンツを含めた学習方法の詳細を、このスペースで確認することが奨励されています。


Weekly development report as of 2025-11-14

Ledger eras

Cardano's hard fork combinator transitions the network through ledger eras that introduce new sets of rules and features. Eras are distinct from the higher-level development phases outlined in the original Cardano roadmap.

Terminology

Development phase – a broad, roadmap-level theme (for example, Byron, Shelley, Goguen, Basho, and Voltaire).

Ledger era – a specific set of ledger features introduced by a hard fork and enforced by consensus.

Intra-era hard fork – a focused change that requires a hard fork but does not initiate a new era.

When new functionality needs to be introduced to Cardano, the ledger undergoes a hard fork combinator event. Unlike other blockchains, where hard forks can split the chain and force communities to choose between versions, Cardano’s hard fork combinator ensures a seamless transition with no chain split. This mechanism allows the network to evolve safely while preserving all existing data and history. Besides era transitions, Cardano also supports intra-era hard forks, which enable incremental updates within the same era. Each hard fork introduces a new ledger era, extending Cardano’s capabilities while maintaining continuity and security.

Development phases and ledger eras



Hard fork upgrades use distinct names for community communication (for example, Chang → Plomin). These names are always mapped internally to a ledger era and protocol version. Hard forks activate a ledger era and may also introduce additional intra-era changes.

Current status at a glance

Conway. The current ledger era, initiated by the Chang upgrade and completed with the Plomin hard fork.

Dijkstra. The next ledger era, under active development by the Ledger, Plutus and Consensus teams. This work includes preparations for Plutus v4 and integration hooks for the new era.

Euler. A planned ledger era to follow Dijkstra. Public details remain unfinalized, and both name and scope may change.

Future hard fork names will be announced closer to release. The number of future hard forks is roadmap-driven rather than predetermined.

Where can I track technical progress?

Weekly development reports

Ledger team updates on Cardano Updates

Public ledger repository and specification.


Ledger eras

Dear Learners and friends,

Greetings from EMURGO Academy, speaking to you through the EMURGO Academy in Project Catalyst Newsletter.  Most people know us as EMURGO, one of the co-founding entities of Cardano.  Although we are part of it, the Academy is one of its divisions, sharing with all of them the mission that from the beginning was conferred to our parent company: to promote the adoption of Cardano, bringing its technology closer to the solution of society's most pressing problems.

Imagine three friends agreeing to do something fantastic: “all right guys, one is in charge of everything that has to do with engineering and maintenance (IOHK), another one is in charge of everything that has to do with governance and participation (Cardano Foundation) and another one is in charge of everything that has to do with adoption (EMURGO).”

This may be what we look like in the web3 world:



FutureFest event on August 10, 2022

But our reality is this:



Some of our beloved students

We get up early in the morning to work for a purpose greater than ourselves: our students and their right to contribute to solving the problems of the world we all live in, while providing a better life for their families and their own communities. As Academy, our tool is the education, a tool that builds bridges to a better future.

Cardano Hackathon in Argentina: EMURGO Academy was an official sponsor.



Access to the main auditorium.

The Cardano Hackathon in Argentina, an academic event organized by ADA Solar (a Latin American project funded by Project Catalyst that aims to build the first physical Cardano solar park in the medium to long term), was held in Buenos Aires during the weekend of September 3-4.  It brought together a varied selection of participants (Dr. Lars Brunjes, Genius Yield, IOG, anetaBTC, TosiDrop, Hosky, Apollo, Innovatio, Individuo Digital, Latin Stake Pool, Cardano Feed, Cointelegraph, LATAM Community, RootsID, Tango Crypto, Aldea, Topo Labs, RatsDAO, Apprentices, Token Allies, World Mobile, Snapbrillia, Tx Pipe, ADA Link, Atix Labs) among which two in particular stand out:  the students participating in the Hackathon and the National Technological University (UTN).  In addition to the interest and impact that Cardano's blockchain technology can have in a fertile region for its implementation, this event highlights the way in which local Universities can engage with a project like Cardano, of global magnitude, doing what they are designed to do: embracing their students and their spirit of learning and exploration, with an open mind and willingness to address new topics and partnering with organizations that are in line with the principle of facilitating access to quality education, education that provides the right to participate in the creation of a new future. Undoubtedly, one of the partners that can be assigned to that category is EMURGO Academy, as we were honored as official sponsors of the event.



  Main auditorium of the National Technological University (UTN) of Buenos Aires (Argentina).



During our presentation

Our sponsorship consisted of three (3) full scholarships of our flagship program “Cardano Developer Professional” for the winning team of the Hackathon. The winning team "HaskellBois", integrated by two Latin American students (here an interview with Ignacio Dopazo, one of its members, days after the end of the event) won two of these scholarships.  The third one was donated to the organizer of the Hackathon and leader of the ADA Solar team, Jose Iadicicco, as we reasoned that this scholarship can contribute greatly to the development of his challenging project.

We hope that the spirit of this type of academic events will spread like wildfire throughout all regions of the world whose students feel within themselves the courageous call to create and innovate.  We, EMURGO Academy, are waiting for you.

This was our presentation at the Cardano Hackathon in Argentina.



Team HaskellBois, winners of the Hackathon, and new EMURGO Academy students.

In our “Blockchain Security” series: Best Practices for Cardano dApp hackproofing.  

Each month we look to have an event on a specific topic that allows our students and the Catalyst community to get first-hand, case-based information delivered directly from Cardano members with an outstanding track record of knowing what they are talking about.  By bringing together speakers with projects and startups from the ecosystem that are recognized in their respective areas of action, this series of talks have proven to be very useful and inspiring for Catalyst members and EMURGO Academy students who are thinking about participating in innovation funds, as well as Academy graduates and active Cardano members whose projects or companies get to connect with the knowledge that, as a result of their experience, the speakers deliver to the attendees.  The live Q\&A sessions are the setting that complements the dynamic of absorbing as much knowledge as possible from these thought leaders who have demonstrated their contribution to Cardano as a technology that disrupts the status quo of today's legacy systems.  Attendees come to empathize with the guests to the level of understanding not only the technical details that describe their work, they also come to understand their entrepreneurial struggle and see that the possibilities for creation and innovation are real, the tools to do so exist: seed capital through Catalyst funding, technical guidance through an entire community of creators willing to collaborate with those in difficulty, constant formation of partnerships and collaborations, among other issues.



Promotional of our monthly event

By MLabs, Maksymilliam Brodowicz: he developed backend service in Haskell for VoiceLab.ai and was a technical team lead at IOHK where he worked designing, creating, and extending smart contracts on Cardano. He is currently at MLabs where he is the Haskell & Plutus technical lead.

By Gimbalabs, Roberto C. Morano: besides being co-founder of Gimbalabs and DevOps Advocate of the Cardano Foundation, he is the creator of the Dandelion API.  In the past, he was Lead DevOps Advocate at Emurgo Global managing many OpenSource projects.

By Vacuumlabs, Philip Disarro: He worked as an Artificial Intelligence Engineer at Blazetech where he developed a state of the art deep learning model designed to identify and extract event precursors from unstructured text data of the NTSB(National Transportation Safety Board) aviation accident reports. Philip has also worked as software & Quality Assurance engineer at SunDensity a company that provides photonic solar conversion products and services where he was developing systems to automate the testing and benchmarking of their products.  Currently at Vacuumlabs where he is tasked with smart contract development and auditing using a variety of specialized Haskell eDSLs like Plutarch, Pluto, and Plutus along with extensive work with Cardano-tx-lib, Plutus Application Backend, and Lucid.

It is no secret that many proposers whose ideas are funded, reach the implementation stage without resolving important technical aspects of their proposals.  Participation in this type of events (fortunately in the ecosystem we have a wide range of accessible academic events like this one) can offer unexpected solutions or at least the beginning of a clearer path forward.  Speaking specifically about EMURGO Academy's monthly events, one thing we can assure you: our guests do not reserve anything for themselves. A combination of generosity on their part and persistence on ours means that the juice of their knowledge and experience is squeezed out to the last drop (of course, the juice that is possible to pack into 2-hour bottles).



During the event: Maksimilian, Roberto and Philip answering questions from Bernard Sibarda, 

CEO of the project WIMS - educating girls in Africa, attending the event.  

Here you can find the recording of the event with Maksimilian, Roberto and Philip.

BONUSTRACK:

 

Here you can find a recording of a panel discussion we held last month with four outstanding and respected Catalyst entrepreneurs, which we called, "What next after getting funded in Project Catalyst Fund9?"

Bye bye Fund9, see you the next month Fund10.

Last Monday, September 19th at exactly 16:00 UTC the Project Catalyst Fund9 voting period came to an end.  Activities such as publication of results; distribution of rewards to PAs, vPAs and voters; onboarding of new Fund9 funded proposers are still on the to-do list, however, the close of voting marks the end of the competition.



Catalyst Voting App

As an aspiring proposer, there is nothing else to do but wait for the results. Once the results are published, satisfaction and hard work for some (harder than usual given the increased quality levels of the monthly reports and the gradual formation of audit groups, all to avoid embarrassing incidents like this one), disappointment for others, a disappointment that lends itself to reflection during the two-week cooling off period, necessary to recharge batteries and start all over again, in a clean slate that takes care of the disappearance of personal promises of no longer participating in Catalyst funds given the unfavorable results of the previous fund.  As humans, our instinct for opportunity is stronger than ourselves, making participating in a new round something that screams from within.

 

Source: IOG’s dreps presentation    

The more time you spend at Catalyst, the more you get to know and understand the details of the dynamics that take place there.  With that progressive understanding, two truths begin to take shape: 1) you can't get a different result by doing the same thing over and over again; 2) Catalyst is an ecosystem that tends to fill the plates of its stubborn members.  Rethinking a proposal, acquiring new knowledge (EMURGO Academy has fantastic courses), discarding a proposal and starting with a completely new idea, listening and learning from those with experience in the area of interest (our series of conversations with experts, such as those mentioned in the previous section, are an excellent learning exercise), are possibilities to which every non-funded proposer should be open.  In the course of this rethinking, new collaborations begin to emerge, new ideas begin to take shape, new teams begin to form, new opportunities for learning and participation begin to appear almost out of nowhere.  At the least expected moment, without yet having been achieved the success initially desired, the unfunded proposer's weekday hours are no longer enough, although thinking about it can be done with real peace of mind since the family expenses are covered and the professional and personal satisfaction begins to be felt in the skin.  Then, a funded proposal. The medal on the chest.  But it no longer feels the same, or at least not as expected.  More work on top of the work already being done: the plate is completely full.

The end of one cycle is the beginning of another. In Catalyst, that's a virtue and it's also a curse.  In any case, no one ever said that the job of making the world a better place was a simple one. If it were, anyone would do it.

EMURGO Academy at Catalyst Cardano Women.

There is no doubt about the wealth of people in the Catalyst ecosystem that one can be fortunate enough to meet each week at the various community events.  One of those events is the Swarm's After the Town Hall (which as the name suggests, takes place right after the weekly Town Hall on Wednesdays) and one of those people is Dzhuliana Nikolova, co-founder and CTO of OneUpOneDown, highly scalable AI mentor matching platform and framework that connects women from all over the world with their perfect match.



Source: OneUpOneDown twitter account

Each week, Dzhuliana leads one of the breakout rooms set up to address a variety of topics.  The name of her breakout room is Catalyst Cardano Women, an initiative whose objective is to "give women the confidence to take action and participate to their full potential within Catalyst, where they might otherwise have remained as an observer".  An interesting and extremely disturbing statistic stands out in the information provided on the Catalyst Cardano Women web page: less than 5% of Cardano are women. A simple statistic that in itself provides complete validity to her weekly work in the Swarm.  

 

Catalyst Cardano Women breakout room September 14th

Our latest conversation revolved around education and how a completely broken education system globally is finding a new dawn in the decentralized environment in which we find ourselves.  Diverse opinions from diverse people from diverse walks of life come together in this space to explore the possibilities of a world ready to be astutely discussed.  

Dzhuliana has done an exquisite job in this space, which welcomes women and men (it is not a space exclusively for women) willing to prioritize equality in their discourse and, above all, to act in favor of achieving it.

It is not unusual to hear me repeat the same thing over and over again: participating in this type of activities is extremely important.  There, new ideas, new collaborations, new teams, new ways of looking at a problem, new opportunities are born.

Don't forget: every Wednesday, after Town Hall. Information here.

EMURGO Academy around the world.

Understanding is the step prior to connecting. The whole picture becomes clearer when you listen to different cultures from different parts of the world.   Common threads begin to emerge. A plan of action begins to take shape.



EMURGO Academy in the Weekly Town Hall, September 14th.



EMURGO Academy in the Africa Town Hall, September 2th.



EMURGO Academy in the LATAM Town Hall, September 01.



EMURGO Academy in the European Town Hall, September 15.

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Newsletter: EMURGO Academy in Project Catalyst | September 2022