Arc

The Economic OS for the internet. Now live on mainnet.

[Arc @arc]

Arc Mainnet is live.

Arc launches as the Economic OS for the internet: an open platform for global markets, real-time value movement, tokenized assets, and agentic economic activity.

Arc is more than a blockchain.

It launches as a full-stack financial platform with assets, applications, interoperability, developer infrastructure, and Circle platform services live from day one.

Arc delivers USDC as native gas, deterministic sub-second finality, EVM compatibility, and institutional validators.

It integrates with Arc Studio, App Kits, Arc Portal, Circle Agent Stack, CCTP, Gateway, CPN, and StableFX.

A complete economic platform at genesis.

Arc launches with infrastructure for:

→ Agentic economic workflows
→ Lending and borrowing
→ Trading and liquidity
→ Onchain FX
→ Payments and settlement
→ Tokenized assets
→ Exchanges, wallets, custody, compliance, data, and developer tooling

190+ institutional and ecosystem builders are building across Arc.

[Sam | Arc and Circle Dev Community @samconnerone]

Building onchain shouldn’t feel like an obstacle course.

Arc Studio helps builders turn ideas into usable applications faster.

Learn from others on Arc House
https://t.co/GW0z57t71O

[Arc @arc]

15% of subscription charges decline. Cross-border, it's 72% worse.

@ConfirmoPay’s Marcy Dumitrescu on why Confirmo Subscribe moves recurring billing onchain, live from the Arc Mainnet launch.

[Arc @arc]

🇮🇳 ETHGlobal Mumbai was a blast! About 1,400 hackers came out, and 89 teams built on Arc, with 45 building in Arc Studio.

Meet our winners:

DeFi: Earlyout (@Satyam_S1603 @Shreyas__Thakur @dextroalien)
Enables users to sell pending fund redemptions for USDC on Arc, with pricing that explains the associated risks.
https://t.co/cMs553LDwQ

Mobile: RupeeRail (@Kakashi8654 @shanjiv177 @suyash101101 @vg_jojo239)
Bridging India’s UPI QR payments with onchain stablecoin payments for humans and AI agents. Live on Arc mainnet.
https://t.co/CWLoswAc2M

Smart contracts: Dynaura (@Dev_9007 @iamomsalunkhe @pavvannn)
A smart solar energy distribution and management system, powered by AI and paid onchain.
https://t.co/iZy4MdfT5I

Bridge Kit: Inphinity (@Ramitphi)
Enables users to create index funds of tokenized stocks on Arc or invest in them using USDC.
https://t.co/meciSlIJ79

Continuity: https://t.co/HMfTMcym15 (@himalaythakkarr @vedantsx)
OpenRouter for GTM tools, where AI agents pay from their own wallets.
https://t.co/rIcV45w9Zm

Special mentions
Skjol (@fassko): arrival-delay cover for small importers, with fixed stablecoin payouts when ships arrive late
Vitaquack (@_krisgg @Masashi_Ono0611 @corotvoid): for robots to be useful, they need a wallet, but we can’t give them ours. Give them a budget.
Sky Proof (@itz_micky06 @kira_906): a tamper-proof black box for autonomous drones
Dabba (@fahmindot @akilaymaan): a stock basket on Uniswap v4 that distributes trading fees
cringe-court (@_pwcca_): a comedy courtroom where AI lawyers argue your case and a verified human jury rules onchain

Thank you to every team that built on Arc this weekend, and to @ETHGlobal for a great event. Keep building, and we can’t wait to see what you ship next .

[Arc @arc]

Technical Office Hours are on November 12 at 8 AM ET.

@TxnSheng will show how to build a USDC checkout from Claude Code, Codex or Cursor with the Arc Studio CLI, then pull the code back into your project.

Come with questions.
https://t.co/J9jBR8wkE1

[Arc @arc]

Arc 🤝 @peachlfg

Liquidity that moves with the market.

Live on Arc.

[Crecimiento 🌞 @crecimientoar]

DEMO DAY JUDGES — ARC ACCELERATION SEASON

This Friday is Demo Day for the program we've been running with @Arc. 14 startups will pitch live in front of our audience, with a judging panel that includes Matías Masotti from Masotti Ventures, @HannaSchiuma from @lucero_ventures, Mateo Guigue from @NewtopiaVC, @123gonzalo from Invicta Capital, @lain_calvo, @mmartinxyz, and @jennateeman and @akelani, both from @circle.

See you Friday!

[Arc @arc]

Aave is building its next generation of markets on Arc.
@luigidemeo, CBO of @aave, on what comes next.

→ Tokenized equities
→ Onchain FX
→ Institutional lending

Aave’s liquidity and Circle’s reach can help bring new participants into onchain credit.

https://t.co/XgTYtzRxiD

[PropellerHeads @PropellerSwap]

Prices go stale quickly on Arc's 500ms blocks if your router can't keep up.

Fynd now routes your trades < 10ms across ~85% of @arc’s DEX volume.

Give users the best and latest prices on large cirBTC / EURC swaps on Arc.

Try it yourself: https://t.co/ojpMI5u4nJ

[Arc @arc]

Before an agent gets access to your data or money, you need a way to trust its work.

@gaganmac walks through the infrastructure being built on Arc for agent identity, private execution, and reviewable work histories.

A look at how agents could earn that trust over time.

[BVNK @BVNKFinance]

First, @arc went live on BVNK. Now, BVNK is live on Arc. We’ve partnered with @Circle and @Arc to power high-value bank transfers inside Circle’s Onramp Kit. Arc dApps can now let users move funds directly from ACH, Wire, or SEPA into USDC on Arc without juggling separate payment integrations 🤝

[Extended @extendedapp]

EURC is now supported as collateral on Extended.

You can now deposit $EURC on @arc, Ethereum or Base and use it as margin across all perpetual markets, with no conversion to @USDC required.

EURC launches at a 90% contribution factor, which will move to 95% after an initial monitoring period.

[Sam | Arc and Circle Dev Community @samconnerone]

Why @arc makes sense to agents

Agents don’t care which chain they use. They care about speed and cost.

Arc gives agents the rails to move money efficiently while helping humans maintain the controls needed to operate safely.

@catena_labs breaks it down! Watch the clip👇

[alcove @alcove_wallet]

Alcove is built on @circle xReserve. Deposit @USDC from @arc, @ethereum and other CCTP-supported chains and receive USDCx, which is USDC-backed and live on Aleo.

Simple, fast, and private.

[Arc @arc]

Arc 🤝 @BVNKFinance

BVNK is live on Arc.

Through Circle Onramp Kit, builders can give users a bank-transfer path to fund wallets and receive USDC on Arc without managing separate payment processor integrations.

A more complete first-mile funding experience for apps built on Arc.

[Arc @arc]

Clearing is a financial superpower and only the largest banks have had it.

Live from Arc Mainnet @buchmanster on @cyclesmoney's mission to bring institutional-grade debt clearing to everyone.

[K3 Capital @k3_capital]

Our cirBTC delta-neutral vault is live on @Arc.

cirBTC in. cirBTC out. Yield paid in-kind.

Under the hood: an actively managed strategy that harvests risk premium across DeFi and pays it back in cirBTC terms.

🧵

[Arc @arc]

Builders can bring liquidity to Arc for less with Interop on Arc:

• CCTP fees: 75% off Fast Transfers into Arc, Standard Transfer fees waived to and from Arc for EURC & cirBTC and free for USDC (gas still applies)
• Gateway fees: Waived on Arc for all supported assets, including USDC, EURC, cirBTC (gas still applies)

See pricing: https://t.co/NXBAWFlIBh

[Crecimiento 🌞 @crecimientoar]

WEEK 6 — ARC ACCELERATION SEASON

The sixth week of the 6-week program with @Arc is done, where we're working with fintech and AI startups as they take their businesses to the next stage of growth on Arc.

This week we had a group mentorship session, a masterclass on venture capital, and a run of 1:1s to sharpen decks, listen to each pitch and make it stronger, all to get teams ready for Demo Day. Next Friday, November 13, every team will pitch their startup and show what they've built.

[BlockRunAI @BlockRunAI]

⚡@ClawRouter_ , BlockRun MCP, and @FranklinRun_ now support payments on @arc.

Your agents can pay per call for models, image generation, and search — all in USDC on Arc.

Start paying on Arc: https://t.co/KYO45KEmhw

[Danny Organ @organ_danny]

I think the agents found nanopayments…3.2M payments in the last 24 hours, the biggest day to-date!

On @arc @Circle Gateway Nanopayments are:
-Gas-free USDC payments
-Txn sizes from $0.000001 to $1M+
-Settled in milliseconds
-Built for agents that pay per call

🤖Agents have always loved @USDC (99.6% of agentic payments use it), and now they’re starting to discover the magic of nanopayments.