Arc
Circle's Arc L1: native USDC gas, EURC and USYC, and the StableFX settlement escrow.
Chain ID
5042
What this page covers
Smarts documents live contract state, recent activity, and governance on this chain.
Contracts
Click a contract to open its canonical page.USD Coin
Token
Native gas token, a predeploy rather than a normal ERC-20. Balances are tracked with 18 decimals internally but the ERC-20 surface reports 6, and transfers are emitted by a system emitter.
EURC
Token
Circle's euro stablecoin; the non-USDC leg of the initial StableFX pair.
USYC
Token
Hashnote US Yield Coin, Circle's tokenised T-bill collateral. Gated by the Entitlements registry at 0xb69ecb156dc0028198028c501340d5367845ca72 and minted/redeemed through the Teller at 0x51a8ce47dc08ba5cd19c7aa84ea6fd6664f60f9b.
FxEscrow
System
StableFX PvP settlement escrow. Quoting and matching happen off-chain in a permissioned RFQ market-maker network; only settlement lands here.
Multicall3
Infra
Permit2
Infra