Circle’s Arc launch is just 2 days away: What can we expect?

TL;DR

• Circle will launch Arc, its layer-1 blockchain, on September 16, 2026, alongside founding validators such as BlackRock, Visa, Mastercard, and DTCC.
• The network uses a proof-of-authority mechanism with approximately 20 permissioned validators and charges fees in USDC, offering deterministic finality in under one second.
• The ARC token raised $222 million in a private presale at $0.30 per unit, implying a fully diluted valuation of $3 billion.

Circle is preparing to launch the Arc public mainnet on September 16, 2026, eleven months after opening its public testnet and thirteen months since the network was announced for the first time.

The layer-1 blockchain, built by Circle Internet Group, was designed specifically for institutional settlement, stablecoin payments, tokenized assets, and what the company calls the agentic economy.

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.

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