Wall Street Meets Web3: BlackRock, Visa, and Mastercard Back Circle’s New Arc Blockchain

USDC stablecoin issuer Circle has announced the founding validator cohort for Arc, its open blockchain network. It is currently in private mainnet with more than 100 ecosystem and institutional builders.

Circle said the network is on track for a public mainnet launch on September 16, 2026.

Behind Circle’s New Blockchain According to the official post, the founding validator group includes BlackRock, The Depository Trust & Clearing Corporation (DTCC), Galaxy, Global Payments, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation and Visa.

Circle said the group represents a model in which institutions building on the network also help secure it. The aim is to create a foundation of trusted and globally distributed operators that can support secure and scalable on-chain financial applications.