← The evidence ledger
Evidence row 525795
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://scrapecheck.fly.dev/verify-redirect
- Recorded
- Previous row
- #451538
- Body SHA-256
- 61b96367529a6639611a452c502bb12d0095d458e1827ba3f5f11fa8151910e3
- Leaf
- 0x8dfcfe77690e1f84983737efcacf48fd46d72df249f123695b0ce9fa28a003cf
What was observed
{
"endpoints": [
[
"x402",
"https://scrapecheck.fly.dev/verify-redirect"
]
],
"name": "ScrapeCheck",
"owner_address": "0x455f20ec147477cafcd6d77c1604529f3c4ff665",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x455F20eC147477CAFcd6D77C1604529f3c4Ff665",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x455F20eC147477CAFcd6D77C1604529f3c4Ff665",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "4HuSbgqgKkeUM5jEzAzLGpxtivCGda9eEtYc2Sp1fLpM",
"scheme": "exact"
}
],
"description": "Redirect tier (deterministic, no LLM): verifies where a public URL actually leads: final URL (byte-exact), first response status, and hop count of the HTTP chain, walked twice with per-hop SSRF checks. Use it to confirm a link or a moved page points where it claims. Loops and unstable chains return unverifiable, never a guess. First 100 checks per client are free: resend with header X-Use-Free-Allowance: yes and no payment to use them.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"claim": {
"final_url": "https://scrapecheck.fly.dev/price-mismatch-checker",
"first_status": 301,
"hops": 1
},
"url": "https://scrapecheck.fly.dev/audit"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"check_type": "redirect_chain_v1",
"confidence": 0.95,
"engine": "web_field_v1/0.3.2+17e21204a029",
"evidence": {
"lens_votes": {},
"refetch_excerpt": "301 https://scrapecheck.fly.dev/audit -> 200 https://scrapecheck.fly.dev/price-mismatch-checker",
"refetched_at": "2026-08-28T00:00:00.000Z",
"second_fetch_at": "2026-08-28T00:00:01.000Z"
},
"key_id": "k2",
"reasons": [
"the chain settles at the claimed final URL (byte-exact)",
"first response status is 301 as claimed",
"the chain has 1 redirect hop(s) as claimed"
],
"signature": "ed25519:…",
"source_hash": "sha256:…",
"verdict": "pass",
"verdict_id": "00000000-0000-0000-0000-000000000000",
"verifier_url": "https://scrapecheck.fly.dev"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"claim": {
"description": "see the route description; there is no asked field - this tier adjudicates exactly what it accepts",
"type": "object"
},
"url": {
"description": "public HTTPS URL",
"type": "string"
}
},
"required": [
"url",
"claim"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"check_type": {
"description": "The check contract used, e.g. web_field_v1.",
"type": "string"
},
"confidence": {
"description": "The engine's confidence in the verdict, 0 to 1.",
"type": "number"
},
"engine": {
"description": "Engine name and version digest that produced the verdict.",
"type": "string"
},
"evidence": {
"description": "What the re-fetch observed.",
"properties": {
"lens_votes": {
"description": "Boolean votes is_real, is_current, does_answer from the judging lenses.",
"properties": {
"does_answer": {
"type": "boolean"
},
"is_current": {
"type": "boolean"
},
"is_real": {
"type": "boolean"
}
},
"type": "object"
},
"refetch_excerpt": {
"description": "Excerpt of the re-fetched page content the verdict was judged against.",
"type": "string"
},
"refetched_at": {
"description": "UTC timestamp of the engine's own fetch of the page.",
"type": "string"
}
},
"type": "object"
},
"key_id": {
"description": "Identifier of the signing key; resolve against GET /pubkey.",
"type": "string"
},
"reasons": {
"description": "The stated reasons for the verdict.",
"items": {
"type": "string"
},
"type": "array"
},
"signature": {
"description": "ed25519 signature over canonical sorted-key JSON of every field except signature.",
"type": "string"
},
"source_hash": {
"description": "sha256 of the normalized page text the verdict judged; null when no anchor text was obtained.",
"type": [
"string",
"null"
]
},
"verdict": {
"description": "One of pass, fail, unverifiable.",
"enum": [
"pass",
"fail",
"unverifiable"
],
"type": "string"
},
"verdict_id": {
"description": "Unique identifier for this verdict; its issuance is confirmable at GET /verdicts/{verdict_id}.",
"type": "string"
},
"verifier_url": {
"description": "The issuing service's URL; display only, never a trust root.",
"type": "string"
}
},
"required": [
"verdict_id",
"verdict",
"confidence",
"reasons",
"evidence",
"check_type",
"engine",
"key_id",
"verifier_url",
"source_hash",
"signature"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"errorNote": "A page that cannot be verified is NOT an error: unverifiable (or fail on /verify-presence) is a signed 200 verdict. 4xx means the request never reached the engine.",
"errors": [
{
"body": {},
"name": "Payment Required",
"note": "the x402 v2 challenge is not in the body; it is base64-encoded JSON in the PAYMENT-REQUIRED response header",
"status": 402,
"when": "any request without valid payment, a free-allowance header, or a service key — including requests with malformed bodies: payment is checked before input validation"
},
{
"body": {
"details": [
"url: Invalid url",
"claim: Required",
"asked: Required"
],
"error": "invalid input contract"
},
"name": "Bad Request",
"note": "details lists one entry per failing field, in the form \"<field>: <problem>\"",
"status": 400,
"when": "payment or allowance has cleared but the body does not match the input contract"
},
{
"body": {
"error": "rate limit exceeded — try again shortly"
},
"name": "Too Many Requests",
"status": 429,
"when": "requests exceed the per-minute rate limit, paid or not"
}
]
},
"lastUpdated": "2026-10-27T10:13:00.216Z",
"quality": {
"l30DaysTotalCalls": 6,
"l30DaysUniquePayers": 5,
"lastCalledAt": "2026-10-27T10:13:00.111Z"
},
"resource": "https://scrapecheck.fly.dev/verify-redirect",
"serviceName": "ScrapeCheck",
"tags": [
"verification",
"redirects",
"links",
"web"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Redirect tier (deterministic, no LLM): verifies where a public URL actually leads: final URL (byte-exact), first response status, and hop count of the HTTP chain, walked twice with per-hop SSRF checks. Use it to confirm a link or a moved page points where it claims. Loops and unstable chains return unverifiable, never a guess. First 100 checks per client are free: resend with header X-Use-Free-Allowance: yes and no payment to use them."
}What the leaf hashes
{"body":"61b96367529a6639611a452c502bb12d0095d458e1827ba3f5f11fa8151910e3","id":525795,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124766433174,"prev":451538,"subject":"x402_bazaar:https://scrapecheck.fly.dev/verify-redirect","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).
- 0x8dfcf3505db9b8946f7f1400a5eec9e8ee9e4d6706004b8fdfe98e9da6fcaa48
- 0xdb89e2279478f1ebae0c6df211c54828a544352fc5cd039da0f779e30087fcb6
- 0xca7938ae16913cae924d532e5968532c8ed484b21a930a38f3b194be2846ddf5
- 0x11265065b5e3ec131e12e49437140ae51ea998ef2ce93d6d1e1bbea1d7c190c4
- 0x76f511bc36b229703c9be6b9b8d59c57371b3a07cd01234ceb49ac3d31dc37f0
- 0x9bbf24b88b74eb0ca59b68218cb6370770b5b670c7ee6b3fc392549fdb8240d2
- 0x67b4b233a810d2b1079295dd57c3395fb5d1ff800d3b4b4384f0525bdc5d107d
- 0xad9da946c76c0aec993a79743b78fc1deeceee7b2bf34363778738747b6681c3
- 0x4a55d286c4db5ceeaed423a1385261deefc68fa3f8e051419a4fd0a2591c7d64
- 0x606878f266f778f939af6be0d71dc52de6d8db326fec0de336f70b06c21cfd23
- 0x5d0dfc183bf4faa332fcfb11ba54acfc81c21a52f31b623cbcf436e9be1faf44
- 0xe0e69ccf3eae9f1603c5f7e4a938a5ebe41708a9b4f6cb15a530b2e2aa69d8a0
- 0xea3d566bf95ca7a3a7f6de9c4f77180bd8c5ffd160486a27d870e8a2fb6d0b9e
- 0x06e3b43165f5b3c31d850bc32f20b2e25b844564c4e042c141b9748c26a5a600
- 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
- 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
- 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
- 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
- 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4