← The evidence ledger
Evidence row 76451
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/changed
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f96d0956d9a58735a7b53174a589ad4ab05ca45922aa6b57826958e6251de52a
- Leaf
- 0x17fe733a153e8ba90b12260590127a88f953f34d86b67f5b16b717878922a81b
What was observed
{
"endpoints": [
[
"x402",
"https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/changed"
]
],
"name": "Forest Packages",
"owner_address": "0xb48d918151311f982d542ef5c84cc1cd54cff7a9",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xb48D918151311F982d542eF5C84cc1cd54CFf7a9",
"scheme": "exact"
}
],
"description": "Detect whether normalized public npm or PyPI package registry state changed since a saved fingerprint. Returns a deterministic SHA-256 fingerprint for package/version existence, latest/resolved version, deprecation or yank state, license and runtime requirement. No dependency graph, vulnerability scan or registry mutation. Base mainnet USDC",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"ecosystem": "npm",
"package": "express",
"version": "4.21.2"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"capability": "package.changed",
"data": {
"changed": false,
"ecosystem": "npm",
"fingerprint_fields": [
"ecosystem",
"package",
"exists",
"requested_version",
"requested_version_exists",
"resolved_version",
"latest_version",
"outdated",
"deprecated",
"yanked",
"license",
"requires_runtime"
],
"new_hash": "0000000000000000000000000000000000000000000000000000000000000000",
"package": "example",
"previous_hash": "0000000000000000000000000000000000000000000000000000000000000000",
"scope": "package_registry_metadata_only_no_dependency_graph",
"state": {
"deprecated": false,
"ecosystem": "npm",
"exists": false,
"latest_version": "example",
"license": "example",
"outdated": false,
"package": "example",
"requested_version": "example",
"requested_version_exists": false,
"requires_runtime": "example",
"resolved_version": "example",
"yanked": false
}
},
"meta": {
"cache": "miss",
"checked_at": "2026-01-01T00:00:00.000Z",
"duration_ms": 0,
"provider": "npm"
},
"ok": true,
"version": "1"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"ecosystem": {
"description": "Public ecosystem value used to scope this lookup.",
"enum": [
"npm",
"pypi"
]
},
"package": {
"description": "Public package name to inspect.",
"maxLength": 214,
"minLength": 1,
"type": "string"
},
"previous_hash": {
"description": "Earlier result hash used to detect a material change.",
"pattern": "^[a-fA-F0-9]{64}$",
"type": [
"string",
"null"
]
},
"version": {
"description": "Package version whose public metadata should be checked.",
"maxLength": 128,
"minLength": 1,
"type": "string"
}
},
"required": [
"ecosystem",
"package"
],
"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": {
"capability": {
"const": "package.changed",
"description": "Public capability value used to scope this lookup."
},
"data": {
"additionalProperties": false,
"description": "Public data value used to scope this lookup.",
"properties": {
"changed": {
"description": "Public changed value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"ecosystem": {
"description": "Public ecosystem value used to scope this lookup.",
"enum": [
"npm",
"pypi"
]
},
"fingerprint_fields": {
"description": "Public fingerprint fields value used to scope this lookup.",
"items": {
"enum": [
"ecosystem",
"package",
"exists",
"requested_version",
"requested_version_exists",
"resolved_version",
"latest_version",
"outdated",
"deprecated",
"yanked",
"license",
"requires_runtime"
]
},
"maxItems": 12,
"minItems": 12,
"type": "array"
},
"new_hash": {
"description": "Public new hash value used to scope this lookup.",
"pattern": "^[a-fA-F0-9]{64}$",
"type": "string"
},
"package": {
"description": "Public package name to inspect.",
"type": "string"
},
"previous_hash": {
"description": "Earlier result hash used to detect a material change.",
"pattern": "^[a-fA-F0-9]{64}$",
"type": [
"string",
"null"
]
},
"scope": {
"const": "package_registry_metadata_only_no_dependency_graph",
"description": "Public scope value used to scope this lookup."
},
"state": {
"additionalProperties": false,
"description": "Public state value used to scope this lookup.",
"properties": {
"deprecated": {
"description": "Public requested version exists value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"ecosystem": {
"description": "Public ecosystem value used to scope this lookup.",
"enum": [
"npm",
"pypi"
]
},
"exists": {
"description": "Public exists value used to scope this lookup.",
"type": "boolean"
},
"latest_version": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"license": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"outdated": {
"description": "Public requested version exists value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"package": {
"description": "Public package name to inspect.",
"type": "string"
},
"requested_version": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"requested_version_exists": {
"description": "Public requested version exists value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"requires_runtime": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"resolved_version": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"yanked": {
"description": "Public requested version exists value used to scope this lookup.",
"type": [
"boolean",
"null"
]
}
},
"required": [
"ecosystem",
"package",
"exists",
"requested_version",
"requested_version_exists",
"resolved_version",
"latest_version",
"outdated",
"deprecated",
"yanked",
"license",
"requires_runtime"
],
"type": "object"
}
},
"required": [
"ecosystem",
"package",
"changed",
"previous_hash",
"new_hash",
"state",
"fingerprint_fields",
"scope"
],
"type": "object"
},
"meta": {
"additionalProperties": false,
"description": "Public meta value used to scope this lookup.",
"properties": {
"cache": {
"description": "Public cache value used to scope this lookup.",
"enum": [
"hit",
"miss",
"bypass"
]
},
"checked_at": {
"description": "Public checked at value used to scope this lookup.",
"type": "string"
},
"duration_ms": {
"description": "Public duration ms value used to scope this lookup.",
"minimum": 0,
"type": "integer"
},
"provider": {
"description": "Public provider value used to scope this lookup.",
"type": [
"string",
"null"
]
}
},
"required": [
"provider",
"checked_at",
"cache",
"duration_ms"
],
"type": "object"
},
"ok": {
"const": true,
"description": "Public ok value used to scope this lookup."
},
"version": {
"const": "1",
"description": "Package version whose public metadata should be checked."
}
},
"required": [
"ok",
"capability",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-26T00:06:11.095Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-26T00:06:10.586Z"
},
"resource": "https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/changed",
"serviceName": "Forest Packages",
"tags": [
"package",
"npm",
"pypi",
"registry",
"fingerprint"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Detect whether normalized public npm or PyPI package registry state changed since a saved fingerprint. Returns a deterministic SHA-256 fingerprint for package/version existence, latest/resolved version, deprecation or yank state, license and runtime requirement. No dependency graph, vulnerability scan or registry mutation. Base mainnet USDC"
}What the leaf hashes
{"body":"f96d0956d9a58735a7b53174a589ad4ab05ca45922aa6b57826958e6251de52a","id":76451,"kind":"listing","method":"baseline/1","observed_us":1793025492288829,"prev":null,"subject":"x402_bazaar:https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/changed","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).
- 0x17fea5d446ecf33f8c47609af9c7caf2920fc3d0577cd3d18781c59c8b953e4b
- 0x554d1c00e165044067ff01c63e2102fdafa105898293729b6f9efd58213ad033
- 0xf49bc3c2963f83a1a0326c31248f62795f1ea29e1e3d539b641b504bd542a2e7
- 0xdc3c0f95416d62573a0339c55dcb94a648045860cbe94d5de5168f9a3f21068c
- 0x8714d77199dd04a784ea3838d326c99026e7f23150fc9b60ca842de128e7b13e
- 0xeb168ff046e40d1a5a3ad1b40084317e2f39c9528709d64779551e812375e69c
- 0xfa558569186555b496feab124dfb19f7366549b9bebe162722a88ac81b90f4c8
- 0xf122327ba31d7f37dcbe947762e72338d37ad0b2ebae239cfa1bc8830bc59e74
- 0x42312b813f18d43d97d17d292c3cecc6f29ac87fb3e02fb04b0f55bc92477553
- 0x0fcb0ae13db11f174ecb290ebcb27cf7f0e5aba2eac750fab3d7ca602ae20148
- 0x84d28434d4d3c4d17b89916035448fc07d9ad132609b14e307edbe020e19d1a6
- 0x15eab8feed5b3f08165d63b9f1aed508c0624966a05349e051f86f0c188707b5
- 0x32f46c5f73ecbfd4f770f7f760a79bee2afed4b3e7572fa882b3e7dce8df4356
- 0x770e4376196188c7fc9ec40f8e218dc0d1cb92bba5fe0425a0edce27ca9a997f
- 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae