Maintainers from four Hyperledger projects to serve as code contribution guides during AnitaB.org Grace Hopper Celebration – Hyperledger Foundation 2025 Update: Off to a Fast Start! Read on → Search Join About About Explore membership Members Technical Advisory Council Governing Board Speakers Bureau Staff FAQ Store Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs All projects Deploy Certified service providers Vendor directory Training partners Participate Why get involved? 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This year, Hyperledger is putting its resources behind Open Source Day (OSD), an all-day hackathon for participants of all skill levels to learn about open source while contributing to projects designed to solve real world problems. OSD will be held October 1 as part of this year’s Grace Hopper Celebrations (vGHC).  During OSD, the women taking part will spend the day diving into the open source world to level up their skills and start contributing code. Participants will work in groups and with the mentors for hands-on learning, tailored to their experience level.  Hyperledger is an official Open Source Partner Project for OSD and is teaming with maintainers from four Hyperledger projects to introduce participants to its diverse ecosystem. Maintainers from these projects will on hand as guides to both the Hyperledger technologies and the code contribution process: Hyperledger Besu, an Ethereum client designed to be enterprise-friendly for both public and private permissioned network use cases; Hyperledger Cactus, a blockchain integration tool designed to allow users to securely integrate different blockchains;  Hyperledger Indy, a framework that provides tools, libraries, and reusable components for providing digital identities rooted on blockchains or other distributed ledgers; and Firefly, a Hyperledger Lab, a multiparty system for enterprise data flows, powered by blockchain. For each of these projects, the maintainers have compiled an array of pull requests or tasks that are tagged as “Good First Issues” that participants can tackle as their initial code contributions to Hyperledger. These triaged, non-documentation requests include everything from bug fixes to enhancements to security plug-ins. For those who want to challenge themselves or move deeper into a project, the Hyperledger Cactus list is broken down based on level of experience: Level 100 – Introductory Level 200 – Intermediate Level 300 – Advanced Level 400 – Expert We want to thank our maintainers Anastasia Lalamentik (FireFly), Grace Hartley (Besu), Justin Florentine (Besu), Linlu Liu (FireFly), Nicko Guyer (FireFly), Peter Somogyvar (Cactus), Renata Toktar (Indy), and Tracy Kuhrt (Cactus) for offering their time and expertise to OSD. They will play a vital role in welcoming the Grace Hopper community into the world of open source and setting them up for success as contributors to Hyperledger and other projects.  View previous blog post Back to all blog posts View next blog post The latest community news in your inbox Select the checkboxes below for the monthly decentralized digest and dev/weekly newsletters About LF Decentralized Trust The Linux Foundation's flagship organization for the development and deployment of decentralized systems and technologies. About Members TAC Governing board Speakers bureau Staff FAQ Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs Participate Why get involved? 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