Mainnet Launch
Arc (ARC) · Releases & Updates · September 16, 2026
Circle launched Arc mainnet on September 16, 2026, a public Layer-1 blockchain designed as the Economic OS for the internet.
Arc is Circle's public Layer-1 blockchain — designed as the "Economic OS for the internet": a full-stack platform where stablecoins, tokenized assets, lending, payments, and global markets operate on shared composable infrastructure. Built by the creators of USDC with native integration into Circle Mint, Circle Payments Network, and CCTP for cross-chain transfers. Configurable privacy, stablecoin-denominated gas fees, and deterministic settlement are built into the base layer. Testnet launched October 2025, processed 244.1M transactions by May 2026. Mainnet went live on September 16, 2026. ARC token whitepaper released May 2026.
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