x402 census · rubric-protocol.com · a33b1b7e8ec2 · JSON

POST /v1/c2pa/verdict-attest

unprobed

C2PA verdict attestation Tier A. POST raw asset bytes (max 25MB). Rubric runs Google Credentio validation in-sandbox, anchors the verdict to Hedera with ML-DSA-65 post-quantum signature. Durable proof asset X validated against C2PA Trust List Y at time T. Operated by Rubric Protocol.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://rubric-protocol.com/v1/c2pa/verdict-attest

Method POST

Price $0.25 USDC = 250000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=

payTo 0xaB6731A0BcDf511c2842C768a03448075aB654ca

Seller rubric-protocol.com

Catalogs cdp (row updated 2026-09-30)

Listed since (lower bound) 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-30

CDP quality counters 25 calls and 1 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain)

Category (keyword rule) code-execution

Templated path no

x402Version in catalog 2

Service name / tags Rubric Protocol · attestation, compliance

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 13

Payments 40

USDC volume $0.24

Median payment $0.001

First / last payment 2026-08-24 / 2026-09-30

Sampler-shaped share of payments 90.0%

Payers that are not samplers 2

Source forensics-2026-09-30

Address 0xaB6731A0BcDf511c2842C768a03448075aB654ca

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "note": "raw asset bytes; content-type header sets format"
  },
  "bodyType": "binary",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "example": {
    "attestationId": "string",
    "statusCodes": "string[]",
    "verdict": "valid|invalid|untrusted|error",
    "verify": "string"
   },
   "type": "json",
   "vsr": {
    "hashProfile": "vsr/v0.4/sha3-256",
    "spec": "https://rubric-protocol.com/specs/vsr-v0.4.md",
    "vsrVersion": "0.4-draft"
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://rubric-protocol.com/v1/c2pa/verdict-attest' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/a33b1b7e8ec2/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a33b1b7e8ec2"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on rubric-protocol.com.