Transfer logs
for native value movements).
This page is the complete reference for where Arc’s protocol-level behavior
diverges from Ethereum. Comparisons below are against Ethereum at the Osaka
hard fork, Arc’s baseline. Most differences are transparent to application code,
but a few change execution semantics in ways that matter when you port a
contract. If you are porting an existing contract, start with the
Porting contracts to Arc checklist.
Tools that locally simulate the EVM (such as Foundry’s
anvil) run a standard
EVM, not Arc’s, so they cannot reproduce Arc-specific behavior. Features that
depend on it (the native-coin precompiles, EIP-7708 Transfer events, and
USDC blocklist enforcement) only surface when you test against an Arc RPC
endpoint.USDC as the native gas token
Arc uses USDC as its native token. The single most important thing to understand is that native USDC and the ERC-20 USDC interface are the same asset, not two separate tokens that happen to share a name.
The ERC-20 interface lives at the