x402 census · soren.com · 1a2b1ed534f8 · JSON
GET /v1/attestation
live
A signed, timestamped statement that a specific SHA-256 was presented to Soren at a given moment. Use it when a counterparty must check that your output existed by then. You send only the hash — we never receive your content, so there is nothing to leak or be compelled to produce. An agent signing its own output proves nothing to anyone else. Not a legal notarisation, not proof of authorship, not…
Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://soren.com/v1/attestation |
| Method | GET |
| Price | $0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts base |
| payTo | 0xaDc3A47EFbD82Ed724a0E9A3D08D5A1A8e6586fd |
| Seller | soren.com |
| Catalogs | cdp (row updated 2026-09-08) |
| Listed since (lower bound) | 2026-09-08 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-08 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-08 (catalog-reported, not verified on chain) |
| Category (keyword rule) | identity/trust/kyc |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Soren · attestation, timestamp, proof-of-existence, notary, signed-data |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-01T03:13:24.000Z (cron) |
| Verdict now | live changed from unprobed |
| HEAD / GET | 402 / 402 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"20000","payTo":"0xaDc3A47EFbD82Ed724a0E9A3D08D5A1A8e6586fd","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":120,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Latency | 2,596 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 3 |
| Payments | 5 |
| USDC volume | $0.06 |
| Median payment | $0.01 |
| First / last payment | 2026-08-13 / 2026-09-17 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0xaDc3A47EFbD82Ed724a0E9A3D08D5A1A8e6586fd |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"note": "model output v3"
},
"type": "http"
},
"output": {
"type": "json",
"example": {
"attested": true,
"hash": "<64 hex>",
"observed_at": "<ISO-8601 UTC>",
"signature": {
"algorithm": "Ed25519",
"value": "<base64>"
},
"statement": "attestation|<hash>|<observed_at>"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://soren.com/v1/attestation' -H 'accept: application/json'
The catalog declares GET. 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/1a2b1ed534f8/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"1a2b1ed534f8"} 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 soren.com.