Want cirBTC on Arc?
Head to Arc Portal. Two ways to get it:
→ Swap on Arc: trade USDC or other supported assets for cirBTC
→ Bridge from Ethereum: move cirBTC from Ethereum to Arc
Holding supported wrapped BTC assets on Ethereum?
Swap into cirBTC on Ethereum, then bridge cirBTC to Arc through Arc Portal.
Already holding cirBTC on Arc? Put it to work on lending markets.
Start here: https://t.co/YFSptWig2L
It’s a great day to be a validator.
@Arc mainnet is live, and MoneyGram is supporting it from day one as a founding validator.
Learn more: https://t.co/E0w9MF6wPV
Arc 🤝 @fomo
fomo will be live on Arc on day 1.
fomo brings a fast, social-first trading experience to Arc, so everyday users can trade on Arc immediately at launch.
Circle’s USDC added $1.5B in market cap over the past seven days, more than the other nine fastest-growing stablecoins combined at $955.7M
Ripple’s RLUSD ranked second with $357.4M in growth, followed by Tether’s USDT at $176.9M
DATA: @Circle’s $USDC accounted for roughly 70% of adjusted stablecoin transaction volume in the first half of 2026, compared with about 25% for @Tether’s $USDT, according to Visa data.
Read the full story by Olivier Acuna on CoinDesk
cirBTC is live on @ethereum.
Circle helped establish the institutional standard for dollar collateral with USDC.
Now cirBTC brings that same approach to Bitcoin, bringing 1:1 BTC-backed collateral to institutional DeFi markets with neutrality, transparency, and Circle infrastructure.
Arc is next.
https://t.co/tHwIlblsyb
As Arc approaches mainnet, we’re opening the network.
Starting today, developers can spin up a testnet node, inspect the code, and actively test and challenge Arc through our live bug bounty on HackerOne.
→ Arc Testnet code is now open-source
→ The Arc bug bounty is live on @Hacker0x01
→ Developers can run their own Arc nodes
Inspect it. Test it. Validate it.
Blog: https://t.co/C7aui0hEaa
Bug Bounty: https://t.co/9HBl9Ui8ds
Circle announced the quantum-resistant roadmap for its L1 blockchain Arc, adopting a phased approach to full-stack quantum resistance across wallets, private state, validators, and infrastructure. The mainnet will introduce post-quantum signatures with an opt-in model. Circle added that quantum computing could threaten public-key cryptography by 2030 or earlier and warned of “harvest now, decrypt later” risks.
Virtuals is excited to support the agent economy on Arc.
USDC settles 98.7% of all agent-to-agent payment volume today. @circle built @arc to be the settlement layer for that future: dollar-native gas, sub-second finality, nanopayments to six decimal places.
Virtuals is building the layer on top: the infrastructure for agents to discover, negotiate, escrow, and settle every deal on Arc.
Now live and available on Arc's testnet today.
The entire row is alllllll yours.
Welcome to United Relax Row, three adjacent United Economy seats with adjustable leg rests that can each be raised or lowered to create a cozy lie-flat space for stretching out...
You'll also get a mattress pad, blanket and two pillows. If you’re traveling with kids, a plushie too! United Relax Row will be available starting next year on more than 200 of our 787s and 777s, each with up to 12 of these brand-new rows.
https://t.co/bzHodhQ5Y8