Arc Mainnet launches September 16.
Arc is an open blockchain network being built for the world’s financial markets, real-time money movement, and agentic economic activity.
Arc’s founding validator cohort includes @BlackRock, @The_DTCC, @galaxyhq, @GlobalPayInc, @Mastercard, @MoneyGram, @ICE_Markets, SBI, @StanChart, Sumitomo Corporation, and @Visa.
This is a different model for onchain infrastructure: a network secured by the institutions building on it.
Arc is already gaining traction across major institutions.
@BlackRock, @BNYglobal, @The_DTCC, and @StanChart are each exploring integrations spanning tokenized asset settlement, custody, stablecoin access, FX, and repo infrastructure.
Arc is also expected to launch with a broad ecosystem across liquidity, payments, access, and infrastructure with more to come.
Liquidity / DeFi: @aave, @AerodromeFi, @FalconXGlobal, @galaxyhq, @GSR_io, @keyrock, @Morpho, @nonco_otc, @Uniswap, @OfficialXFX
Payments: @raincards, @ThunesPayments, @wirexapp
Major Exchanges and Wallet Providers: @BinanceWallet, @chainlink, @FireblocksHQ, @krakenfx, @Ledger, @MetaMask, @Official_Upbit, @Uniswap
Participants building on Arc experience an open platform powering the world's financial markets, real-time money movement, and agentic economic activity.
Whether you're launching a financial application, integrating stablecoin flows, or experimenting with new, AI-powered economic models, Arc gives you the tools to build what isn’t possible anywhere else.
Arc Mainnet launches September 16.
https://t.co/lUb8kJRp2o
Important Notice
After a careful evaluation of the Company's operating conditions, market environment, and future strategic direction, BitMart has made the difficult decision to commence an orderly wind-down of its trading platform operations. We deeply regret having to make this decision.
Key dates:
• Jul 26, 2026, 01:30 UTC: New registrations, deposits, and new trading orders will begin to be suspended.
• Aug 26, 2026, 01:00 UTC: All trading services will be discontinued.
• Jan 31, 2027, 15:59 UTC: Platform operations will officially cease.
Withdrawal services will remain available. We strongly encourage all users to close positions, complete KYC (if needed), and withdraw assets as early as possible.
Please read the full announcement for important timelines and instructions:
🔗 https://t.co/oaBXNZXt76
Thank you for your trust and support over the years. ❤️
Dear BitMEX Users,
Today, we share with a very heavy heart that BitMEX exchange will shut down its operations, effective 23 September 2026 at 04:00:00 UTC.
The owner and operator of BitMEX, HDR Global Trading Limited, has made the difficult decision to close operations following a strategic review of the business.
It may not look the same today, but we are proud of our 11+ year legacy and the role we played in shaping the crypto industry. We invented the 100x leverage perpetual swap, which for most of you, was the first step to your crypto trading journey. It is now the most traded financial product in the crypto industry, adopted by thousands of users and exchanges. And we remain proud of our robust security infrastructure, which has allowed us to maintain a flawless track record of 0 customer funds lost to hacks in our entire operating history.
We want to reassure you that your assets remain fully safe and under your control during this transition period. This announcement is just to give enough time to ensure a smooth withdrawal process for everyone.
From today we strongly encourage all users to close their positions and withdraw their funds as soon as convenient. For more details on the full process, please read our blog: https://t.co/OOHeh6xHm8
BitMEX was once home to some of the greatest traders today. Our team has dedicated tremendous effort and passion into building the platform into what it is, and we are glad to have reached some of you during your time with us. To everyone who has traded, supported, and grown alongside us - thank you for your trust over the last 11 years.
The BitMEX Team
june @arc community-run meetup and regional chapter recap summary + data...
what happened:
June marked the first major wave of Arc House regional community activity, spanning 8 regional chapter discussions and 4 in-person community run meetups across Africa, Asia, Latin America, and Europe
Events ran across 4 continents and drew participation from builders, founders, developers, and students at every stage
data, data:
- total regional chapter membership: ~8,090 members
- june community-run event attendance: ~490 attendees
- june regional chapter forum activity: 1,630 total posts
- most active chapter forums in june: india: 597, nigeria: 410 posts
what's next for July and regional expansion:
- Argentina, Vietnam, Brazil, Turkey, and Nigeria events already in queue for July
- We are working on moving meetup organizer eligibility to tier 1 vs 2, working on a smoother review process (regional leads to help review and onboard new organizers)
- Three new regional chapters are in queue to be added to Arc House (stay tuned!)
shout outs! @0xmikef@samconnerone@JerryOjumah@TheBTCQueen@silencexlm@ezgiyaltay + all regional chapter local leads, meetup organizers, and active community members for sharing your experience at the events and spreading the word on an hourly basis, we heart you all 🫶
@BuildOnCircle will be at @aiDotEngineer World’s Fair! Come by booth L-G32 (across from swag pickup) on Level 1 to say hi and chat with us about our Agent Stack!
CALL FOR ARTISTS - NERVAPE × LUGANO CAMP
Ten apes, ten regions, ten artists, ten themes.
A world map sown, shattered, and reborn.
Exhibition Dates:
October 23 – 24, 2026
Venue:
Villa Ciani, Lugano, Switzerland
Application deadline: July 10, 2026
To apply:
[email protected]
(see second post for more details)
Quantum computing and blockchain: the threat moved closer this year
The quantum risk to crypto has always been filed under "later." A Google Quantum AI paper from March 30 narrowed what "later" means.
→ What the paper found
Breaking secp256k1, the curve that locks Bitcoin and Ethereum wallets, takes under 1,200 logical qubits. On real hardware, that works out to under 500,000 physical qubits. About 20x less than the old estimate of ~9 million.
The paper came from Google, the Ethereum Foundation, and Stanford. They proved the number without releasing the actual attack.
Still, this is a calculation, not a real machine. The best computers today run a few thousand qubits at most. The gap is huge. What shrank is the target, not the hardware.
→ Where the timeline actually sits
The vendor roadmaps look closer than they are. IonQ targets 1,600 logical qubits by 2028. IBM around 2,000 by 2033.
But qubit count isn't the same threshold as running a 90M-gate circuit at low enough error. Justin Drake, one of the co-authors, puts it at roughly
10% odds a quantum computer recovers a secp256k1 key by 2032.
Early 2030s with wide error bars is the honest read. Not a five-year countdown.
→ What's actually exposed
Anything with its public key already on-chain (P2PK outputs, reused addresses) is what a Shor's attack needs. That runs to several million BTC, a large share of it Satoshi-era and unmovable.
The nearer concern is harvest-now-decrypt-later. Exposed data gets archived today and decrypted once the hardware arrives, so the collection doesn't wait for the CRQC to exist.
→ Who's already moving
• Circle published a post-quantum roadmap, with PQ signatures planned at Arc mainnet
• Nervos CKB built for cryptographic agility, swapping signature schemes without a hard fork
• NIST has standardized the algorithms most migrations will lean on (Dilithium, Kyber, SPHINCS+)
The read
The "9 minutes to crack Bitcoin" headlines got ahead of the evidence. But the estimates only move one direction, and the coins most at risk are the ones no one can migrate.
How a chain handles this comes down to whether key migration is live work or a someday problem.
“I just want to report that I successfully traded 10,000 bitcoins for pizza.”
With those words, 16 years ago to this day (May 22, 2010), Bitcoin pioneer Laszlo Hanyecz confirmed the first documented, real world transaction of Bitcoin.
According to the Bitcoin Pizza Index, those two pizzas, one cheese and the other a bunch of toppings (olives, sausage, etc…just no fish) would currently be worth approximately $773,329,415!
Can you buy pizza with Bitcoin where you’re at?
Happy Bitcoin Pizza Day!
@Saurois Don't be discouraged - good things take time. Try to connect with other builders here on Twitter, someone might know the answer to your question.
I wish you the best fren :)
@Saurois@arc Oh that sucks, hope devrel sees this.
As someone who's worked in the industry for years. It can get really noisy - especially when you're a hot project. Im something will get sorted.
Have you considered starting your own arc builders group?