x402 census · twin.unykorn.org · 146a74fc8e37 · JSON
POST /verify-receipt
live
Verify a genesis402 proof receipt — signature and hash-chain position — Genesis402 / UnyKorn Operator Network
Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://twin.unykorn.org/verify-receipt |
| Method | POST |
| Price | $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts eip155:137, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB |
| Seller | twin.unykorn.org |
| Catalogs | cdp (row updated 2026-09-20) |
| Listed since (lower bound) | 2026-09-20 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-20 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-20 (catalog-reported, not verified on chain) |
| Category (keyword rule) | identity/trust/kyc |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | · receipt verification, proof, attestation, ed25519, signature verification |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:25:45.167Z |
| HEAD | 405 |
| GET | 402 |
| Verdict | live live: valid 402 to an unpaid GET |
| 402 carried in | header+body |
| x402Version in the 402 | 2 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"5000","payTo":"0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Live payTo equals catalog payTo | yes |
| extensions.bazaar in the 402 | yes |
| PAYMENT-REQUIRED header | yes |
| WWW-Authenticate offer | x402 realm="genesis402", version="1", Pa |
| Content type / server / CORS | application/json / cloudflare / * |
| Latency | 2,252 ms |
| Error | Payment required |
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 | 1 |
| Payments | 1 |
| USDC volume | $0.001 |
| Median payment | $0.001 |
| First / last payment | 2026-09-30 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"params": {
"receiptId": "g402_rcpt_0a1b2c3d4e5f"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"chain": {
"anchor": "UNANCHORED",
"receipts_on_chain": 3
},
"found": true,
"issuer": {
"alg": "ed25519",
"keyId": "g402-key-<16hex>"
},
"ok": true,
"receipt": {
"receiptVersion": "genesis402-receipt-v1",
"seq": 3,
"sha256": "<64hex>",
"truthLabels": [
"ATTESTED",
"VERIFIED"
]
},
"signature_valid": true,
"type": "verify-receipt",
"verdict": "valid"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://twin.unykorn.org/verify-receipt' -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/146a74fc8e37/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"146a74fc8e37"} 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 twin.unykorn.org.