Zerion is rolling out immediate API support for Arc, Circle’s stablecoin-focused blockchain, when the network goes live on September 16, 2026. The integration means developers already plugged into Zerion’s infrastructure won’t need to touch a single line of code to start pulling data from the new chain.
What Zerion is actually shipping
The API support covers the core toolkit developers need to build anything from portfolio trackers to full-blown DeFi dashboards. Token balances, historical transaction data, and webhook-based notifications will all be available the moment Arc’s mainnet opens for business.
For existing Zerion integrators, the process is essentially invisible. If you’re already querying Zerion’s API across any of its supported chains, Arc data flows through the same pipes. No migration, no new endpoints, no weekend spent rewriting data connectors.
Zerion currently supports over 40 EVM-compatible chains plus Solana. The announcement landed on September 11, five days before the mainnet launch.
Arc: the blockchain designed for people in suits
Arc isn’t trying to be another general-purpose smart contract platform. Built by Circle, it’s specifically engineered for stablecoin-native financial applications, think payments infrastructure and asset tokenization.
The most distinctive design choice: USDC serves as the native gas token. Instead of paying transaction fees in a volatile asset, users pay in a dollar-pegged stablecoin.
Under the hood, Arc uses the Malachite BFT consensus mechanism to achieve sub-second finality.
The validator network includes BlackRock, Visa, and Mastercard among the institutions operating validators on the network.
Arc’s public testnet has been running since October 2025, giving developers nearly a year to kick the tires before mainnet. Aave, Morpho, and Uniswap are all expected to have integrations ready when the network goes live.
The institutional DeFi thesis gets more infrastructure
The presence of Aave, Morpho, and Uniswap at launch is telling. These are battle-tested DeFi protocols that collectively handle billions in value on other chains. Their decision to deploy on Arc suggests the economics and user base potential justify the effort of supporting yet another network.
The risk is that Arc’s permissioned architecture limits the kind of permissionless innovation that has historically driven DeFi’s most interesting developments. A chain where validators are hand-picked by Circle may attract institutional liquidity, but it could also repel builders who thrive in more open environments.