Circle has scheduled the public mainnet launch of its Arc blockchain for Sept. 16 with BlackRock, DTCC, Visa and other financial institutions joining as founding validators.BlackRock plans to deploy its BUIDL tokenized money market fund on Arc while DTCC is preparing to integrate DTC tokenized assets with the network from the second half of 2027.Arc is operating on a private mainnet with more than 100 institutional and ecosystem participants ahead of its public launch.Circle will introduce AI developer tools, tokenized asset management services and a composable application framework alongside the network’s launch.