Past Hackathon Projects on Circles

• EthGlobal Brussels 2024 – BraceBuddy: NFC onboarding flow for Circles. First Prize. Showcase: https://ethglobal.com/showcase/bracebuddy-ph10y
• EthGlobal Brussels 2024 – Woleth: Telegram EVM wallet leveraging Circles invites. Runner Up. Showcase: https://ethglobal.com/showcase/woleth-eth-3ukpz
• EthGlobal Brussels 2024 – Famjam: Family currency using Circles to incentivize behaviour. Runner Up. Showcase: https://ethglobal.com/showcase/famjam-99inm
• EthGlobal Singapore 2024 – Voting with UBI: DAO voting using Circles group tokens. Showcase: https://ethglobal.com/showcase/voting-with-ubi-k56uu
• EthGlobal Prague 2025 – Circles Subscriptz: Recurring payments with secure, trustless authorization. Winner of Blockscout Explorer Pool Prize. Showcase: https://ethglobal.com/showcase/circles-subscriptz-tgfhj

Add more examples as they arrive; call out where Rust crates (backends, services, CLIs) can power similar builds.