← The evidence ledger
Evidence row 451538
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://scrapecheck.fly.dev/verify-redirect
- Recorded
- Previous row
- #120989
- Body SHA-256
- fa91a566eba840d89e139bc2bc68adc9844773b40da318c6d3f8a9ca9cfef801
- Leaf
- 0xf1689d3cd831d4ab427ff710ba06c2fc3ba1701dd533e6be0ecbb2e8ee23bc60
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": 5,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-26T00:14:42.916Z"
},
"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":"fa91a566eba840d89e139bc2bc68adc9844773b40da318c6d3f8a9ca9cfef801","id":451538,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100507112516,"prev":120989,"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).
- 0xf168b5405b3864daf01150583f2238c49417f8d7f03f6a61f474552cf6a9424f
- 0x2212b0635bf61f90369413fa28a17d9e21db810830b8b489b142cf59d91e65d6
- 0xa543764b8e4897fa8ae82170fbd5216a2dd489881794c726caa70b1c038ee49d
- 0x29377a12d493c67f39a40ad8422364a2dd1179f145873c82369d3d4dbd5a7ded
- 0xa9d556c2e8eec3e12c890aaa6f533150470712c06d7a26d9c2c7aa12623a87ff
- 0x3b42f6b1825aac04de19ca713c2029081735e9990c584bd5637d1b10af36ed31
- 0x7fbfc6d1259d2bb6516988e39a63e9a0f63a95b65713acf1b163c10cbaaa40cc
- 0x9104cbf01e2462dd091e9d2dde29ec1091549e09855ffed86d634fde60b3642e
- 0x408b2980e1a312eb9f3052f9d690fe0e9acc82b7fbe6f1ac5268bbf479fed591
- 0x2b7b48941a3379f5a787ec59fd9622a2181c200c0026ebeed35b926bb1e44cbb
- 0x86a162701c5c4382d7e2217c5bfe590eb52de9faf1001063b4fb50d51cc6745b
- 0x8b1294df8f40a2bb6ff0bafdf2505700af24dfe2985fb999b2353f4c85cb56ba
- 0xe0ddf3e1c8349b7fe55d4b2a6864486a77de3e3c0e371df44d69aeb837cfd79c
- 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
- 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
- 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
- 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
- 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
- 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4