Arc mainnet is live16.09.2026

The architect
on Arc.

ACAT is the cat from Circle’s USDC ad, adopted by its community as the mascot of Arc — the chain where USDC is the gas. Every building starts on paper. ACAT draws the plans.

Buy $ACAT on o1 ↗
Network
Arc
Gas
USDC
Finality
< 1s
Launched on
o1
ACAT — a white and tabby cat with amber eyes and a silver bell on its collar, in front of a soft halo
The official portraitREF.0001

The cat from Circle’s “Look for the C” spot, 2026.

Look for the AEvery house has a catSettled when the bell ringsDrawn before mainnetCommunity-runLook for the AEvery house has a catSettled when the bell ringsDrawn before mainnetCommunity-run

01The story

In the cat’s own words.

01/12

  1. 01

    Circle put me in an ad. They told half a million people to look for the C.

  2. 02

    Then they built a chain where my currency is the gas. So I moved in.

  3. 03

    Same cat. New house. The house is called Arc House.

  4. 04

    They call the people who show up here Architects. Fine. I'll draw.

  5. 05

    Anyone can lay a brick. Somebody has to draw where it goes.

  6. 06

    I was the first token through the door on Arc — by API, before the app had a face.

  7. 07

    No image. Just a contract. A cat with no face.

  8. 08

    You don't apply to be an Architect here. You show up and you contribute. So the community drew my face.

  9. 09

    On Arc, settlement is final in under a second. When you hear my bell, it's settled.

  10. 10

    An arch stands with no glue. Every stone leans on the next. That's the whole plan.

  11. 11

    Mainnet opened on 16 September. I was on the blueprint before the doors were.

  12. 12

    Every house has a cat. Arc House has me.

What started as a cat with no face is becoming a house full of architects.

02Why Arc

Built to Arc’s dimensions.

Arc is Circle's stablecoin-native Layer 1. The cat from the USDC ad lives where USDC is the fuel.

Gas

USDC

Fees are paid in the dollar. No volatile gas token to buy first, no surprise costs. Predictable, the way settlement should be.

Finality

<1s

Deterministic. When the bell rings, it’s settled.

Reach

30+

Chains connected through CCTP. Liquidity from day one.

Mainnet

Live

16.09.2026

Arc’s public mainnet opened. The cat was drawn before the doors were.

Launched through

o1

The first token through o1’s factory on Arc — by API, before the app had a front page.

Arc facts from arc.io. ACAT is a community token — Circle, Arc and o1 have not endorsed it.

03Receipts

The paper trail.

Every claim on this page has a date and a source. Click through and check.

  1. 0127 JAN 2026

    Circle put the cat on the internet.

    Look for the C. The USDC spot that introduced the cat. 535K views.

    @USDC ON X↗
  2. 0231 MAR 2026

    Arc opened Arc House and named its people Architects.

    You don't apply. You contribute. The Architects program — five tiers, points for building, writing, translating, hosting.

    ARC.IO/BLOG↗
  3. 0305 AUG 2026

    Arc announced public mainnet for 16 September.

    Stablecoin-native settlement, in public. The date the building opens.

    ARC.IO/BLOG↗
  4. 0411 SEP 2026

    o1 turned on Arc launches. ACAT went first.

    By API, before the app had a front page. First token deployed through the o1 factory on Arc. Contract on the explorer.

    o1 LAUNCHPAD · ARC↗
  5. 0512 SEP 2026

    The cat got its face.

    A contract with no image, adopted. CTO reveal. Same cat from the ad, moved into the chain where USDC is the gas.

    THE COMMUNITY
  6. 0616 SEP 2026

    Arc public mainnet went live.

    The building opened. The cat was already inside. Stablecoin-native settlement, open to everyone. ACAT trades on it.

    ARC↗
  7. 07Reserved

    First acknowledgement from Arc, Circle or o1. First listing. First meetup. It gets filed when it happens, and not a day earlier.

04Make a PFP

Draw yourself in.

Start from the cat or upload your own photo. Add the kit, drag the pieces, download. Everything runs in your browser — nothing is uploaded.

Drag to move the photo · 1080 × 1080Ready

Photo

The architect’s kit

Finish

Adjust · photo

05The House

Every PFP adds a room.

0000

rooms in the house

Add your room

Rooms go up for everyone right away. Keep it clean — anything abusive gets taken down. Never put private information in an image.

Or make one at the table ↑
  1. T1

    apprentice

  2. T2

    draftsman

  3. T3

    architect

  4. T4

    senior

  5. T5

    master

Points for rooms, memes, translations and meetups. The tiers mirror Arc House’s own Architects programme. They’re recognition, not a promise of anything.

06Get $ACAT

Three steps. No gas token.

On Arc, fees are paid in USDC. Bring dollars and you have everything you need.

  1. 1

    Get USDC on Arc.

    Bridge with CCTP from any of 30+ chains, or on-ramp directly. Gas is USDC — there is no separate gas token to buy first.

  2. 2

    Open the market.

    Open ACAT on o1, or paste the contract into a wallet that supports Arc.

  3. 3

    Swap.

    One transaction. The bell rings. Settled in under a second.

Trade on o1 · Arc

Buy $ACAT

Open ACAT on o1 ↗Explorer ↗

Contract on Arc

1,000,000,000

fixed supply

100%

in permanent liquidity

0

team allocation

Supply, liquidity and allocation as deployed by the o1 factory. Read them off the contract before you act on them — this page is community-maintained and can be wrong.

07Questions

Asked and answered.

Is this Circle's cat?+

The cat is from Circle's USDC ad. ACAT is a community token that adopted it. Circle, Arc and o1 have not endorsed anything here, and nothing on this page should be read as their statement.

Why did it launch with no image?+

o1 switched on Arc launches by API before their app had a front end. Whoever fired first didn't set an image. The community took it over and gave it a face — which is, more or less, the point.

Is it live on mainnet?+

Yes. Arc's public mainnet opened on 16 September 2026 and ACAT trades on it through o1. Check the contract on the explorer, not us.

What does “Architect” mean?+

It's what Arc calls its community members — Arc House runs a five-tier Architects program. ACAT borrows the word. The tiers here carry recognition only, and promise nothing else.

Is there a team?+

There's a community and a contract with no mint switch. Read the factory docs and verify on-chain before you trust a sentence of this.

Why a cat, and why an architect?+

The cat is Circle's — it's the face of the USDC spot. The architect is Arc's: Arc calls its community Architects and its home Arc House. An architect works from a blueprint, before the first brick. That's the job.