← The evidence ledger
Evidence row 121043
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 90a5302bc568c869c6fb45e87e4bab9583406adf618f07b00f078cebe9fef3b7
- Leaf
- 0x6684a30f53c93023d3b3a46912984c8828f23e2ba591864b98526f0a5e7a9d60
What was observed
{
"endpoints": [
[
"x402",
"https://scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint"
]
],
"name": "scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint",
"owner_address": "0xfe2353c808f2409ccb81508005a62cef29457706",
"raw": {
"accepts": [
{
"amount": "40000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xfE2353C808F2409cCb81508005A62cef29457706",
"scheme": "exact"
}
],
"description": "Fingerprint a public page so agents can detect changes: final url, etag, lastModified, sha256 contentHash of normalized visible text, raw byteLength, and fetchedAt. POST JSON {\"url\":\"https://example.com\"}. Public http(s) only; private hosts blocked. $0.04 USDC on Base (eip155:8453). No API key.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"byteLength": 528,
"contentHash": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"etag": null,
"fetchedAt": "2026-09-21T00:00:00.000Z",
"lastModified": null,
"url": "https://example.com/"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"url": {
"description": "Public http(s) URL to fetch (SSRF-safe; private/link-local blocked)",
"format": "uri",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"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": {
"additionalProperties": false,
"properties": {
"byteLength": {
"description": "Raw upstream response size in bytes",
"minimum": 0,
"type": "integer"
},
"contentHash": {
"description": "sha256 hex of normalized visible text",
"pattern": "^[a-f0-9]{64}$",
"type": "string"
},
"etag": {
"description": "Upstream ETag header, or null",
"type": [
"string",
"null"
]
},
"fetchedAt": {
"description": "ISO-8601 time the page was fetched",
"format": "date-time",
"type": "string"
},
"lastModified": {
"description": "Upstream Last-Modified header, or null",
"type": [
"string",
"null"
]
},
"url": {
"description": "Final URL after redirects",
"format": "uri",
"type": "string"
}
},
"required": [
"url",
"etag",
"lastModified",
"contentHash",
"byteLength",
"fetchedAt"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-23T06:18:23.376Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-23T06:18:23.236Z"
},
"resource": "https://scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Fingerprint a public page so agents can detect changes: final url, etag, lastModified, sha256 contentHash of normalized visible text, raw byteLength, and fetchedAt. POST JSON {\"url\":\"https://example.com\"}. Public http(s) only; private hosts blocked. $0.04 USDC on Base (eip155:8453). No API key."
}What the leaf hashes
{"body":"90a5302bc568c869c6fb45e87e4bab9583406adf618f07b00f078cebe9fef3b7","id":121043,"kind":"listing","method":"baseline/1","observed_us":1793025619184622,"prev":null,"subject":"x402_bazaar:https://scrooge-x402-tool-mill.vercel.app/v1/change-fingerprint","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x668472209a9948f8285e466cd827f93a5966dfb58feaedb47df7fa3c3cc65b57
- 0xba77c14d00403b041b271554b6c7feba1ceca8eecb8285f53ea6337b77b5bad5
- 0xe74f0a24ebc560e603a6413e50a52cd40b0a969b3dadbdea9d4f321ccb62ab26
- 0x18e0a4e54ef167b8ee83129d308531c637c7bbb786ef04241e61e56f23e94928
- 0xbcd9154a3ebad6690863d7ae6dd76321bf37310de200b6bc7a167c8f39e6853e
- 0x6f44fc5b5732f2e81ecf2ac5a326f9a91496822e0d856152fed7022088cb92a9
- 0x250b63fb6271e5e6e4458c11eaf6bf5689fb76be9dab474c72912eede708d2a0
- 0x42b3cc258a9bb3450344ad4e294eda112abbe787c6d28751f3b35c0b8ff0d37a
- 0xa7be717ed96c035130dde8d1b878492cb1e4ceb10906e8e07c1e477977f43f43
- 0x58c0a36fd4c0b127730a3ff2bd4a0e6279da1a965147e7629a7fd4098c5fed18
- 0x97befbe0402dae50d99027054f0d354513b22fda782f887ba0d9fae94219c296
- 0x611b1c1b68d04a71934006e383071a8f3836400d60beb86d81dd038bc102029f
- 0x13f4b94ecf613d585c952b5363dad2b247a55371eb8e358bb89dc033e83128b1
- 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
- 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae