Payments & Payouts on Arc· 28

The largest category in the directory and the one furthest from crypto-native. It covers payment service providers, acquirers, remittance operators, payout and payroll platforms, business account providers and card programmes — companies whose role is almost always Integrates: an existing product that added Arc as a rail for its own customers, not a protocol deploying contracts.

Two things are worth stating plainly as of 2 September 2026. Arc mainnet opened 16 September 2026; every relationship here is recorded at the status observed on the date shown, and each entry's status line carries its dated evidence. And the operating figures reported for grant-cohort companies — volumes, user counts, corridor coverage — come from secondary reporting rather than Circle, and are labelled as reported on every entry.