Netherlands
How to verify a Dutch company (KVK): the KVK number, the free KVK search, the UBO register and VIES.
Belgium
How to verify a Belgian company (KBO/CBE): the enterprise number and its check digits, KBO Public Search and VIES.
Try it
Test the shape of a check with a free sandbox key (no wallet, mock data); run it for real per call with USDC (x402) or an API key — see the pricing page and the quickstart. A free real check will come with a LimitGuard account once sign-up opens.