public-domain-check-production.up.railway.app

87.2 / 100 · rank 2874 of 3205

last 120 hours · short tick = valid 402 · full tick = invalid or no answer · faint = not probed

score components (0-100) · not the raw measurements below

Availability84

Latency100

Price integrity72

Protocol100

Consistency100

Availability is the one component that is a success rate, so it alone carries an evidence discount: it enters as the 95% Wilson lower bound of the measured share (cubed), which is why its bar reads below the raw percentage above — thin evidence scores below a long proven record. Latency, price, protocol and consistency are direct measurements, shown as-is.

Availability (valid 402 returned)	100.0% of 64 probes
Median 402 handshake	162ms
p90 handshake	166ms
Catalog price (advertised)	$0.015
Live price (median demanded)	$0.015
Price status	match
Protocol	x402 v2
Category (our classification)	other
Payment receiver	0x13B6…4F0B · stable since Jul 12
Base USDC inflow to this receiver wallet (30d, all sources — not just x402)	none observed
Second vantage	confirmed 402 from a second network path (Cloudflare edge), 1h ago
Discovery (.well-known/x402)	present
Catalog volume (their metric)	2 calls/30d

listed products (catalog path · advertised price · live price we measured)

/v1/pd-status/batch	$0.015	not yet probed
/v1/property/risk	$0.02	not yet probed
/v1/sanctions/screen	$0.01	not yet probed
/v1/sanctions/wallet	$0.005	not yet probed

grade evidence: hourly probes of /v1/pd-status/batch. Availability, latency and protocol measure the operator's shared infrastructure and generalize across its products; the price check applies to the probed product. We are beginning to probe secondary products, rotating one per hour.

Seller description of the probed product (one of 4 listed) · unverified · not part of the rating

Clear a list of up to 50 works for US public-domain status in one call: $0.0075 per work brief (default), $0.015 full. For catalogs, reading lists, reprint plans and training-data checks.

Embed this grade (free, always current)

<a href="https://x402register.com/s/public-domain-check-production.up.railway.app.html"><img src="https://x402register.com/badge/public-domain-check-production.up.railway.app.svg" alt="x402 register grade B"></a>

What this grade does and doesn't measure: it scores the paid-request handshake — whether the service returns a spec-valid 402 payment challenge, how fast, and whether its price is honest. We do not pay these endpoints yet, so we do not verify that the paid response returns correct or complete content. Availability is a probe success rate measured hourly, corroborated by a second network path for this service.

Operator of public-domain-check-production.up.railway.app? Dispute this rating. Scores are opinions based on automated measurements at the stated times.