Circle switched on the public mainnet of Arc, its USDC-powered Layer 1, on Sept 16 with 11 founding validators including BlackRock, Visa, Mastercard, DTCC, ICE and Standard Chartered — the first publicly traded company to mint a network token (10B ARC) for a new L1, and per CEO Jeremy Allaire 'an even more consequential launch than USDC itself.'
Circle switched on the public mainnet of Arc, its USDC-powered Layer 1, on Sept 16 with 11 founding validators including BlackRock, Visa, Mastercard, DTCC, ICE and Standard Chartered — the first publicly traded company to mint a network token (10B ARC) for a new L1, and per CEO Jeremy Allaire 'an even more consequential launch than USDC itself.'
Circle launched the public mainnet of Arc — a Layer 1 blockchain built for payments, trading and "agentic economic activity" — on Wednesday, Sept 16, announcing it via BusinessWire. USDC (~$74B in circulation) is wired into the chain as its gas token: every Arc transaction settles fees in the stablecoin.
The founding validator cohort is the story: BlackRock, the Depository Trust & Clearing Corporation (DTCC), ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo, Visa, Worldpay (Global Payments) and Galaxy. These are not pilot partners or ETF issuers — they are running consensus infrastructure on a public network.
The permissioned-validator model with a "defined governance perimeter" is Circle's answer to the question banks have asked since DeFi summer: can we use a public chain without giving up compliance control? Arc's bet is that the answer is a hybrid — public-network reach, permissioned-validator assurance, USDC-native fees.
The timing is the sharper signal. Arc went live the day after the Senate killed the Clarity Act 49-50 and the same day the Fed hiked for the first time since 2023. Washington's legislative route to crypto institutionalization just failed; the infrastructure route shipped anyway. While Congress couldn't produce 60 votes for market structure, BlackRock and Visa quietly started operating block production.
CEO Jeremy Allaire, at the launch briefing: "This is, I believe, the most consequential major platform launch in our history, and I think an even more consequential launch than USDC itself."
Ondo Finance launched Ondo Intelligent Portfolios, a new onchain product category delivering portfolios built on strategies developed by BlackRock for Ondo as single transferable tokens. Three tokens went live today — High Income, Diversified Growth, High Growth — with smart-contract-level rebalancing, available to eligible investors outside the US.
US spot bitcoin ETFs have swung to net inflows of roughly $320M for 2026 (Bloomberg tally; ~$349M per Askthetape) — the first positive year-to-date print since April — after investors added about $4.6B since Aug 19, erasing a $5.69B deficit accumulated by July 13. BlackRock's IBIT captured ~$1.02B over four sessions as Bitcoin rallied ~35% from ~$64,100 to an eight-month high of $87,265.
On Monday, Sept 21, the European Central Bank switched on Pontes, a platform linking distributed-ledger markets to the Eurosystem's TARGET Services so eligible banks and market infra providers can settle tokenized bonds and funds in central-bank money. Christine Lagarde announced the go-live at Friday's Eurogroup, calling it 'a digital euro made available for banks.' It lands three days after the SEC's Innovation Exemption opened onchain trading of tokenized US stocks — the institutional tokenization race is now transatlantic.