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On/off-ramp platforms on Arc use USDC for both transfers and gas. No ETH float is required. Arc’s sub-second finality removes the multi-confirmation wait that other EVM chains require.

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Key differences for on/off-ramp platforms

Three Arc design decisions affect every ramp integration:

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What you need

Before you start, confirm you have the following:

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Arc behaviors relevant to this integration

The following Arc behaviors can affect ramp operations. See EVM differences for details:
  • Blocklist enforcement: Transactions from or to blocklisted addresses are rejected before the mempool. Transfers involving a blocked address revert at runtime and consume gas. Screen destination addresses before broadcasting.
  • EIP-7708 Transfer events: Every native USDC movement emits an ERC-20 Transfer event from system emitter 0xffff…fffe. Filtering only on the ERC-20 contract address misses native sends.

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Integration guides

Add Arc to your on/off-ramp platform

Chain configuration, deposit detection, withdrawal processing, UI display, and compliance screening for ramp providers.