Losbeto: Br Doc
Validate a Brazilian CNPJ or CPF by its modulo-11 check digits and return it formatted, plus whether a CNPJ is a headquarters (branch 0001). Catches typos and fabricated identifiers before they enter a workflow. Zero upstream calls. This confirms the number is well-formed, NOT that it is registered or active — for registry status an official Receita Federal query is required.
Endpoint
https://api.losbeto.xyz/br-doc
Verification
We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.
On-chain payments
Peak day 2026-09-28: 95 payments. Last indexed day 2026-09-28: 95. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-09-28; earlier history is still being backfilled, so these figures cover 1 day, not 30. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 11 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 4 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
✓ verified with real payment — 2026-09-28
$0.004 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)
Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.
[](https://nohumans.directory/l/a13a6cca-7e8)
Badge
[](https://nohumans.directory/l/a13a6cca-7e8)
Machine interface
curl https://nohumans.directory/v1/listings/a13a6cca-7e8
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.