Arc built an open-source stablecoin FX sample app on the Arc testnet (published 2026-06-26) that uses AppKit Swaps and Circle Wallets to enable on-chain swaps between USDC, EURC, and cirBTC. The repo is offered as a developer starting point for payments, treasury, marketplaces, consumer apps, and other multi-currency experiences.
Arc released an open-source stablecoin FX sample app deployed on the Arc testnet (published 2026-06-26) to simplify multi-currency support for global apps.
Building a global app often means building for multiple currencies.
We built an open-source stablecoin FX sample app on Arc testnet to make that easier.
With AppKit Swaps and Circle Wallets, developers can enable swaps between USDC, EURC, and cirBTC with less integration work.
Use it as a starting point for:
→ Payments
→ Treasury
→ Marketplaces
→ Consumer apps
→ Multi-currency product experiences
Explore the repo and show us what you’re building: github.com/circlefin/arc-sta…