July of Code Hackaton 2025

WHY JOIN?

Join builders, developers, and open-source contributors worldwide in an online hackathon exploring what’s possible at the intersection of Hyperledger Firefly and Cardano.

CHALLENGE TRACK

Track 1: Build on Firefly + Cardano
Create an open-source application that showcases a compelling Cardano use-case running on Hyperledger Firefly. Example ideas include:

Wallet-driven user experiences (staking, DAO portals)
Metadata-powered marketplaces and registries
Multi-token DeFi orchestration using off-chain workflows
Real-time analytics using Firefly event streams

Bring your best ideas, ship an open-source demo, and help shape the next chapter of Cardano-powered decentralized infrastructure!

Winners will be crowned live at Rare Evo 2025.
Take the stage, grab the cash, and claim bragging rights!

5,000 USDM1st Place

2,000 USDM2nd Place

1,000 USDM3rd Place

TIMELINE

Submissions Open

July 1, 2025

Start building and submit your project through the portal.

Deadline

August 1, 2025

All entries must be submitted before midnight UTC.

Judging Period

August 1–9, 2025

Our panel will evaluate and shortlist the best entries.

Winners Revealed

Rare Evo 2025 (Aug 10)

Finalists announced live at Rare Evo.

FAQ

The July of Code Hackathon 2025 is an event designed for builders, developers, and open-source contributors to explore the powerful interaction between Hyperledger Firefly and Cardano. Participants are challenged to create innovative open-source applications that showcase compelling Cardano use-cases running on Hyperledger Firefly.

Yes, the hackathon is virtual and entirely online. Check out the timeline for key dates for the hackaton.

The hackathon focuses on building applications that leverage both Cardano and Hyperledger Firefly.

Cardano is a proof-of-stake blockchain platform that aims to be a secure and sustainable ecosystem for decentralized applications, systems, and societies. It is known for its research-first approach and evidence-based development methods.
Learn more at Cardano Official Website

Hyperledger Firefly is an open-source "Supernode" that provides a complete stack for enterprises to build and scale secure Web3 applications. It simplifies the development of blockchain applications by offering an API for digital assets, data flows, and blockchain transactions, making it faster to build production-ready apps on various chains and protocols.
Learn more at Hyperledger Firefly Official Website

Projects should demonstrate a compelling use case for Cardano running on Hyperledger Firefly. While specific ideas aren't provided, consider applications that benefit from the unique features of both technologies, such as secure data exchange, tokenization, or decentralized workflows.
There are no restrictions on the tech stack, so feel free to use any languages, frameworks, or tools that best suit your solution.

Submission details are provided once the submission period opens. The process will involve submitting your code repository (e.g., GitHub), a demo video, and a brief project description through a designated platform.

All entries must be submitted by August 1, 2025.

Legal stuff

The only data we are capturing during this event is your email address, your name, and public links to your showcased projects. Unless you fill out an additional form, or win a cash prize, there will be no other information collected from participants. If you would like to delete your information from our system at any time, please send a message to hello@blockfrost.io. Data collected during the competition imay be shared across various third party services, including TODO. By submitting your information you agree to share this information with us and understand that we may highlight your public work on the July of Code website and in related marketing materials, including the event livestream.

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