Circle launched Arc mainnet with USDC as gas and deterministic sub-second settlement for financial applications.Arc supports twenty-two fiat stablecoins, while BUIDL, USYC, JAAA and JTRSY launch natively at launch.Eleven institutional validators join Circle initially, including BlackRock, DTCC, Visa, Mastercard and Standard Chartered globally.Circle minted ten billion ARC tokens, while stating no public token launch has occurred yet.Circle previously agreed to sell 807.5 million ARC tokens privately for $242.2 million in proceeds.