Cardano News

The November 27, 2025, blog post recaps the "Layer Up" hackathon, which attracted 134 developers across 92 teams during the Cardano Summit. The event featured two tracks: an open innovation track by the Cardano Foundation and an AI-focused track by Masumi. Winners included BioFlow (health data) and KarbonSense (environmental intelligence). The initiative aims to drive blockchain adoption through practical solutions, with upcoming regional hackathons planned for Asia and Africa.

The November 26, 2025, blog post announces the launch of the Leios 24/7 development tracker by Input Output. This tool provides real-time, global visibility into the development of the Ouroboros Leios consensus protocol, showcasing key milestones, active workstreams, and contributions. The tracker highlights the "follow-the-sun" engineering model, reinforcing transparency and accountability as the project transitions from research to implementation.

The November 24, 2025, Cardano Community Digest highlights the unforgettable Cardano Summit 2025 in Berlin, featuring community-led sessions, Roundtable Talks on culture, and content creators like Lido Nation and Sapien explaining technical concepts. The digest covers the "Cardano 101" developer meetup in Vietnam, recent updates to the Project Catalyst Milestone Module for better transparency, and Robert Phair's recognition as a new Ambassador. Additionally, Cardano Academy offers a 50% discount on certification exams.

On November 23, Intersect published "Facts at a Glance" regarding the November 21 Cardano mainnet incident. A malformed transaction exploited a deserialization bug, causing a temporary chain partition. The network never went offline, and no funds were stolen. A coordinated ecosystem response, involving node upgrades to v10.5.2/v10.5.3 by SPOs and exchanges, restored convergence within 14.5 hours.

The November 21, 2025, development report highlights a mainnet chain partition caused by a malformed transaction, which was resolved with hotfix node v.10.5.3. The ledger team defined sub-transactions for the Dijkstra era, while the Plutus team finalized costing for Value primitives for the upcoming hard fork. Lace v.1.31 was released with in-wallet token swaps and Bitcoin wallet support. Mithril completed the first phase of decentralizing configuration parameters.

In a November 20 blog post, Intersect announced a proposal for the next Cardano mainnet hard fork. This upgrade stems from recently completed core Haskell node work. To manage this process, Intersect will convene a Hard Fork Working Group (HFWG) to coordinate ecosystem feedback, impact assessment, and communication before any formal governance actions are raised. An initial virtual HFWG event is scheduled for December 2 to discuss impact, communication, and naming conventions.

Intersect has launched a Bug Bounty Program to reinforce the security of the Cardano open-source ecosystem. This initiative invites ethical hackers to identify and report vulnerabilities in critical repositories, offering rewards for valid findings. By crowdsourcing security research, Intersect aims to proactively discover potential issues, ensuring the network's resilience and stability while fostering a collaborative approach to maintaining Cardano's core infrastructure.

The November 14, 2025, development report highlights the consensus team addressing 'bufferbloat' issues from the Leios demo and enhancing resource management. Scaling updates include Mithril releasing hotfix 2543.1 and Hydra improving partial fanout and introducing 'SafeClose' safety features. Intersect announced election results with high turnout. Project Catalyst Fund15 launched, introducing a new "Midnight: Compact DApps" category alongside three Cardano-focused funding tracks. The education team is conducting a developer course in Buenos Aires.

On November 13, 2025, Laura Mattiucci recapped Day 2 of the Cardano Summit in Berlin. Key highlights included CTO Giorgio Zinetti announcing a new stablecoin initiative and a Masumi hackathon. EMURGO's CEO Phillip Pon discussed the organization's focus on connecting technology, capital, and real-world value. Panels explored AI infrastructure, future disruptions, and the convergence of stablecoins with traditional payments. The day also featured masterclasses on digital identity and decentralized funding.

The November 12, 2025, blog post by Laura Mattiucci recaps Day 1 of the Cardano Summit in Berlin. Key highlights included a keynote by CEO Frederik Gregaard on enterprise adoption, the release of the Digital Trust Infrastructure report, and panels featuring leaders from Mastercard, Volvo, and the UN. The day concluded with Giorgio Zinetti summarizing major announcements like the new Gyro crypto card and increased network liquidity initiatives.