Bridge Kit now supports @Arc Testnet! Bridge Kit makes it easy to build crosschain experiences with @USDC and CCTP V2 in under ten lines of code: → Intuitive SDK methods → Built-in monetization support → Flexible setup → Step-by-step tutorials Get started with Bridge Kit: developers.circle.com/bridge… Learn more about Arc Testnet: docs.arc.network

In this Release Notes episode, we cover Circle Forwarding Service for Gateway and how it simplifies crosschain USDC transfers. Developers can use it to: → Move USDC crosschain without managing destination chain gas fees → Reduce multichain infrastructure overhead → Automate destination-chain minting

1/ Calling all artists, media curators and publishers! Today we're proud to present the Lepton Agent Hackathon, a virtual event in collaboration with Arc exploring agents that transact at the smallest scale - with Circle Agent Stack! Here's how to participate and win 👇

Aerodrome is coming to @Arc Arc is a stablecoin-native ecosystem developed by @Circle, built to bring real-world economic activity onchain. Aerodrome will be there, standing up critical FX infrastructure.

Quick one Architects 🔥 For all regional chapter events both virtual and in-person are moving to an application only process. This change came after the team noticed members joining chapter discussions outside their region. Missed a registration? Don't worry. Every chapter still has open spots. Go to your Arc House chapter now and apply to attend an event in your area. Keep building on Arc community.arc.io/home/clubs/…

🇸🇬 Singapore! your first @arc in person community meetup has been posted June 18, 6-9pm [hosted by @TxnSheng @hj_chen] Apply to join here: community.arc.io/home/clubs/…

Value to app developers and probably fair markets - @arc’s proposed multi-proposer architecture unveiled.

The debate about whether open payments infrastructure could compete with closed networks is over. @ddisparte on what settled it, and what comes next for stablecoins.

Liquidity infrastructure for stablecoin FX is building on Arc. @AerodromeFi is coming to Arc, deploying its exchange infrastructure to help power Arc’s stablecoin-native ecosystem. This launch unlocks: → Deeper markets for FX swaps and liquidity provision → A proven way to bootstrap stablecoin liquidity on Arc → Capital-efficient infrastructure to help grow onchain economies More to come.

amazing technical analysis by @hj_chen

Bored room is amazing. OfficeSpace rendition on how the financial system works. x.com/i/broadcasts/1wxWjjvBX…

"Finance in and of itself is still, to this day, a trust-relationship game." The protocol alone isn't the pitch for institutional capital. The counterparty matters too. @obligatecom Co-Founder Benedikt Schuppli on why the winners in onchain credit understand fiduciary obligations, not just smart contracts.

sample apps! sample apps! sample apps! @arc @buildoncircle looking for a head start? we've been publishing a growing collection of sample apps that demonstrate real-world use cases powered by USDC, Arc, Circle Wallets, Gateway, and related developer tools. have you forked a sample app yet? 👀 i just posted our directory of current sample apps: community.arc.io/home/forum/…

The first series of Arc Community-run meetups for the Nigerian Regional Chapter 🇳🇬 is currently live. These meetups are curated to support and connect builders, creators, and Architects, drive meaningful conversations and build stronger connections in person. Register in @arc house NOW: June 20th | Build Club : community.arc.io/public/club… June 26th | Region Kickoff Mixer: community.arc.io/public/club… #BuildOnArc

AMP enables transaction fairness, PFOF rebates, and much more. Talk to us if you are interested in exploring serving as a proposer with App-Specific Sequencing and unique order flows. Note: AMP is exploratory research at this stage until further validation.

Intentional experimentation at its finest 🙌

The people’s champ and the deep down Architect Noah

Circle Research introduces Arc Multi-Proposer Protocol (AMP), a new approach to block building. AMP introduces proposers that bundle user transactions into payloads and broadcast them directly to validators. The result: → Bounded inclusion → Fixed ordering → Application-aligned order flow For financial applications, block construction matters. Predictable settlement needs predictable transaction handling. circle.com/blog/amp-rethinki…

On the heels of the Privacy Sector announcement the other day, we're also publishing exciting research we've made on the Multi-proposer front Introducing the Arc Multi-Proposer Protocol (AMP) AMP brings (i) bounded inclusion and (ii) stronger ordering guarantees so that user flows on Arc have the best experience possible on decentralized infra Brief explanation: Most network let a single validator decide what's in the next block and in what order. That discretion is where MEV lives, and it's the kind of discretion traditional markets explicitly regulate AMP introduces a new role: proposers Proposers have a super-power: they bundle user transactions into Payloads and broadcast them to validators. Once a Proposer talks to quorum of validators, then their Payload __must__ appear in the next block, in a fixed order. There is still a block assembler, but it no longer has discretion over what goes into a block. If inclusion and ordering matter to your flows and your users, then AMP gives you a direct path to validators with protocol-enforced guarantees We're actively looking for design partners! DM me, or subscribe here and we'll get back to you: circle.com/circle-research#r…

Boream & Boredley paused for pink sprinkle donuts. The old financial system pauses for banking hours, settlement windows, FX delays, and manual approvals. Arc is built for what should not have to wait: → 24/7 onchain FX → Stablecoin-native payments → Sub-second finality

Blockchains are operating systems with a key difference: tamper resistant code, perfectly auditable inputs and outputs, and provable machine state. @jerallaire explains that as AI drives more economic activity, those assurances become even more critical.