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Circle

$10,000

About

Circle's developer platform provides the tools to integrate USDC and blockchain-based payments into your application, with a suite of smart contracts, APIs, and SDKs designed to get you started quickly and securely. Circle recently launched Arc on public testnet, which includes the support of Circle's developer platform. Arc is an open Layer-1 blockchain purpose-built to unite programmable money and onchain innovation with real-world economic activity and is designed to serve as the Economic OS for the internet.

Prizes

🏆 Best Smart Contracts on Arc with Advanced Stablecoin Logic$4,000
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1st place
$2,500
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2nd place
$1,500
Deploy smart contracts on Arc that demonstrate programmable logic using USDC or EURC. Contracts should go beyond simple transfers, like automation, conditional logic, or cross-chain interoperability. Bonus points for composability with Circle's Gateway or CCTP offerings.

Qualification Requirements

Qualification Requirements Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission! * Functional MVP and diagram: Projects must demonstrate a working frontend and backend plus an architecture diagram. * Video demonstration + presentation: Succinctly outlining the project's core functions and its effective use of Circle's Developer tools/tech is required, supported by detailed documentation. * Link to GitHub/Replit repo

🏆 Best Crosschain USDC Experience with Circle's Bridge Kit and Arc$2,000
Create a seamless crosschain app that leverages Circle's Bridge Kit to enable USDC transfers between Arc and supported chains.

Qualification Requirements

Qualification Requirements Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission! * Functional MVP and diagram: Projects must demonstrate a working frontend and backend plus an architecture diagram. * Video demonstration + presentation: Succinctly outlining the project's core functions and its effective use of Circle's Developer tools/tech is required, supported by detailed documentation. * Link to GitHub/Replit repo

🏆 Best Automated Treasury Operations with Circle Gateway and Arc$2,000
Build an onchain treasury automation system using Circle Gateway and Arc that manages, allocates, and distributes USDC. Bonus points for integrations that use Circle Wallets

Qualification Requirements

Qualification Requirements Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission! * Functional MVP and diagram: Projects must demonstrate a working frontend and backend plus an architecture diagram. * Video demonstration + presentation: Succinctly outlining the project's core functions and its effective use of Circle's Developer tools/tech is required, supported by detailed documentation. * Link to GitHub/Replit repo

🏆 Best AI Agent Wallet with Circle Wallets$2,000
Create an autonomous agent that uses Circle Wallets to execute transactions on Arc. The agent should make decisions on real-world data or API inputs and transfer USDC. Bonus points for integrating x402 to monetize API or AI-driven actions.

Qualification Requirements

Qualification Requirements Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission! * Functional MVP and diagram: Projects must demonstrate a working frontend and backend plus an architecture diagram. * Video demonstration + presentation: Succinctly outlining the project's core functions and its effective use of Circle's Developer tools/tech is required, supported by detailed documentation. * Link to GitHub/Replit repo

Workshop

🛠️Circle Workshop

Building with Arc and the Circle Developer Platform

This workshop is happening in-person

04:00 PM UTC-03 — Friday, Nov 21, 2025 in Workshop Room 4