Circle Internet Group, Inc.Circle launched the Arc layer-1 mainnet with USDC-denominated fees, sub-second finality, and institutional features, a major product/R&D development.

Circle, the major US stablecoin issuer, announced on September 16 that it has launched the mainnet of Arc, its underlying layer-1 blockchain. Arc is designed so that transaction processing fees are paid in the dollar-denominated stablecoin USDC, with settlements finalized in under one second, and it also offers security features for institutional investors such as confidential transactions and quantum-resistant signatures. The founding validators that approve transactions include 11 companies, among them BlackRock, the US DTCC, Visa, Mastercard, SBI Group, and Sumitomo Corporation. Arc is linked to StableFX, a foreign exchange platform that exchanges multiple currencies around the clock, and JPYC, the company issuing the Japanese yen stablecoin JPYC, is also listed as a participating partner currency. By the 16th, Circle had completed the issuance of an initial supply of 10 billion of its own token, ARC, and aims to migrate to proof of stake around 2027, saying it is the world's first listed company to issue its own token on a new layer-1.
Circle Internet Group, Inc.Circle launched the Arc layer-1 mainnet with USDC-denominated fees, sub-second finality, and institutional features, a major product/R&D development.
BlackRock Inc
Mastercard Inc
Visa Inc. Class A