Circle Gateway has not enabled Arc mainnet yet (domain 26). Circle's public API answers every Base → Arc transfer with “No active mainnet network found for domain 26”, while Base⇄Ethereum passes the same routing check — so this is Circle's switch to flip, not a bug here. This page activates automatically the moment it does — no redeploy.Live probe: Circle Gateway (HTTP 400): No active mainnet network found for domain 26


https://bridgearc.live/


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Couldn't check whether you already hold a Circle Gateway balance just now — retrying every 30 seconds. If you have USDC inside Gateway it is untouched; it just isn't listed yet. (Gateway balances 400)