App Kits provides a unified SDK for common payment and liquidity workflows across blockchains. Bridge USDC across chains, swap tokens on supported networks, and transfer assets between wallets — all through a consistent interface with built-in monetization support.

Arc is widening external security review ahead of mainnet. The codebase is now open-source, a dedicated Arc bug bounty is live on HackerOne, and anyone can run an Arc node, verifying every block, executing every transaction locally, and querying verified state through a local JSON-RPC endpoint with no rate limits. Here is what that changes for researchers, auditors, and infrastructure teams, how the testing model works, and how to participate.

ERC-8183 is an open standard for the agentic economy that defines how work is scoped, funds are escrowed, deliverables are submitted, and outcomes are resolved onchain. This video walks through how that flow works on Arc Testnet with USDC and Circle Wallets, from job creation and funding to payout or refund.

This post walks through how that flow works on Arc Testnet with USDC and Circle Wallets, from job creation and funding to payout or refund.

Join us for a live introduction to Arc House, the new home for the Arc community, and Architects, the community program designed to recognize and reward meaningful contributions across the ecosystem. Arc House brings programs, events, discussions, recognition, and ecosystem activity into one shared space, while Architects creates a clearer path for community members to contribute, grow, and be recognized. In this session, we’ll walk through what Arc House is, how Architects works, how points, tiers, benefits, and roles fit together, how recognition is earned, and how to get started. We’ll also share what’s coming next and close with a live audience Q&A. --- Architects are independent Arc community participants and are not employees or agents of Circle Technology Services, LLC (“CTS”), any of its affiliates, or the Circle Arc team (collectively, “Circle”). Participation in the Architects program does not create any employment, agency, partnership, joint venture, fiduciary, or other formal relationship with Circle. Architects may not make statements on behalf of Circle, unless expressly authorized in writing to do so. Architects may not bind Circle in any respect. Certain roles or opportunities are subject to additional terms and prior approval. Arc testnet is offered by CTS. CTS is a software provider and does not provide regulated financial or advisory services. You are solely responsible for services you provide to users, including obtaining any necessary licenses or approvals and otherwise complying with applicable laws. Arc has not been reviewed or approved by the New York State Department of Financial Services. The product features described in these materials are for informational purposes only. All product features may be modified, delayed, or cancelled without prior notice, at any time and at the sole discretion of CTS. Nothing herein constitutes a commitment, warranty, guarantee or investment advice.

Why post-quantum readiness matters now, and how Arc’s phased roadmap secures wallets, private states, validators, and infrastructure without forcing disruptive migration.

We explain how blockchains are preparing for the shift to quantum computing. Read our research to see which blockchain layers are vulnerable and more.

Built with support from the Arc Builders Fund, Tradable is expanding access to institutional grade private credit onchain by deploying to Arc Testnet. Tradable has publicly reported tokenizing assets for nearly 30 private credit positions on zkSync, and is tracked at roughly $2.3B in represented asset value on RWA.xyz.