Circle Launches Arc Public Testnet, Signaling Potential Market Shift

Circle Internet Group Inc. launched Arc, a new Layer 1 blockchain test network, on October 28, 2025. Over 100 participants including BlackRock, Visa, and AWS are involved in the launch, marking Circle’s entry into L1 blockchain development. This public testnet signals potential market shifts as institutional involvement in blockchain infrastructure increases. The Arc testnet may influence Circle’s ecosystem and potentially impact USDC.