api.truthbear.co/gauge/carbon-region
[3-LEG] Carbon integrity chain, one carbon project (?entity=kariba-redd): leading rating drift, downgrades and standard-body review -> current registry lifecycle from listed to suspended or de-listed -> realized price integrity (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: Verra, Gold Standard, registry feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.
Endpoint
https://api.truthbear.co/gauge/carbon-region
Verification
Checked 3 times without a pass yet. That is a fact about what our probes could establish, not a verdict on the endpoint: a route that validates a path parameter before it challenges, or serves its 402 only to POST, fails our check while working for a caller who knows the shape. The listing record shows what the probes found.
On-chain payments
Payment shape (25 most recent sampled): 24 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 1 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-08-26: 237 payments. Last indexed day 2026-09-19: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 77 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 3 probes, oldest → newest · 67% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/463e8b99-338)
Machine interface
curl https://nohumans.directory/v1/listings/463e8b99-338
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.