Circle Arc blockchain launches with BlackRock, DTCC and Visa as validators
Circle is about to find out whether Wall Street actually wants to run a blockchain, not just use one. On September 16, 2026, the stablecoin issuer will flip the switch on Arc mainnet, a USDC-native Layer 1 network built specifically for institutional settlement. The Circle Arc blockchain launch comes with a validator list that reads less like a crypto project and more like a directory of the traditional financial system, and that alone makes this one of the more consequential infrastructure bets in recent memory.
Key takeaways
- Circle launches Arc mainnet, a USDC-native Layer 1 blockchain, on September 16, 2026, one day after the Senateโs CLARITY Act cloture vote.
- Eleven founding validators include BlackRock, DTCC, Visa, Mastercard and ICE, making it one of the most institutionally backed genesis cohorts ever assembled.
- Arc runs on Malachite consensus with sub-500-millisecond finality and an EVM-compatible execution layer built on Reth.
- The ARC token presale raised $222 million at a $3 billion valuation, led by a16z crypto with BlackRock and Apollo among the backers.
- DTCC will begin tokenizing DTC-custodied assets on Arc in 2027, and BlackRock plans to move its $2.87 billion BUIDL fund onto the network.
Circle Sets Launch Date for Arc Mainnet, a USDC-Native Blockchain
Arc goes live on September 16, and the date was chosen with unusual precision. This is not a soft rollout or a limited beta โ Circle is opening a public Layer 1 network where USDC itself functions as the native gas token, meaning every fee on the chain is priced in dollars rather than a volatile crypto asset.
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