App Kits Developer Office Hours is a developer-focused workshop around Circle App Kits. Developer Relations Lead, Elton will briefly recap the App Kits mental model, walk through how Bridge, Swap, Send, and built-in monetization fit together, and show the fastest path from install to first integration using the public docs and quickstart. The second half of the session will function as live office hours for builders, covering implementation questions, supported chains and tokens, adapter choices, and practical use cases so developers can move from launch awareness to hands-on adoption. Agenda - Introductions + App Kits launch recap (5 mins) - App Kits overview: Bridge, Swap, Send, and built-in monetization (10 mins) - Hands-on walkthrough: install, adapters, quickstart flow, and key docs/resources (25 mins) - Office hours: live builder Q&A, implementation questions, and use-case discussion (15 mins) - Wrap up and next steps! (5 mins) --- Arc is offered by Circle Technology Services, LLC (“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 and may be modified, delayed, or cancelled without notice at the sole discretion of Circle Technology Services, LLC. Nothing herein constitutes a commitment, warranty, guarantee, or investment advice. USDC is issued by regulated affiliates of Circle. A list of Circle’s regulatory authorizations can be found here.

Traditional gadget insurance is built for annual policies one-size-fits-all pricing that overcharges people when their actual risk is low. Blink flips that model: it prices coverage by the second, mapping device state to a per-second risk multiplier and streaming micro-premiums in real time on Arc with Circle Nanopayments. This session is a live product demo and technical deep-dive that shows how per-second nanopayments make flexible, fair insurance possible. --- Arc is offered by Circle Technology Services, LLC (“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 and may be modified, delayed, or cancelled without notice at the sole discretion of Circle Technology Services, LLC. Nothing herein constitutes a commitment, warranty, guarantee, or investment advice. USDC is issued by regulated affiliates of Circle. A list of Circle’s regulatory authorizations can be found here. USYC is a digital asset token. Each USYC token serves as a digital representation of a share of the Hashnote International Short Duration Fund Ltd. (the “Fund”), a Cayman Islands registered mutual fund. The Fund has appointed Circle International Bermuda Limited (“CIBL”), a Bermuda Monetary Authority licensed digital asset business, as its token administrator, responsible for the management of USYC on behalf of the Fund. As used herein, the term “near-instant” and “always” is intended to signify that, under ordinary operating conditions, redemption requests are filled on a near-real-time basis, subject to factors including, without limitation, blockchain network congestion and the Fund’s then-current liquidity position. Shares of the Fund and USYC are only available to non-U.S. Persons, as defined under the Securities Act of 1933, as amended. Additional eligibility restrictions may apply. The information provided herein is solely for educational and informational purposes and should not be construed as an offer to sell or a solicitation of an offer to buy any security, financial instrument, or other product.

How do you build global USDC payouts without manual bridging and fragmented payout flows? @hifibridge uses Circle Payments Network (CPN) and CCTP to help developers move USDC across chains

Join Sam Sealey and Pete Budlong for this livestream as they discuss and demo VibeCard, a winning project from the recent LabLab Agentic Economy on Arc AI Hackathon. VibeCard is a viral growth network that rewards sharing with instant USDC paid into Circle Wallets on Arc: creators earn a split of the rewards and early sharers earn downstream rewards. The demo highlights Circle Wallets + x402 for multi‑recipient micropayments, reward splits, and a low‑friction onboarding experience. --- Arc is offered by Circle Technology Services, LLC (“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 and may be modified, delayed, or cancelled without notice at the sole discretion of Circle Technology Services, LLC. Nothing herein constitutes a commitment, warranty, guarantee, or investment advice. USDC is issued by regulated affiliates of Circle. A list of Circle’s regulatory authorizations can be found here.

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.

Arc is open sourcing its testnet code, launching a HackerOne bug bounty, and enabling Arc node operations.

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.