← The evidence ledger
Evidence row 76453
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/preflight
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7c36d812a52532b2f92c51a1c2f986516a9fba061b2887f45790ff63c7beb3c0
- Leaf
- 0x3d20cafd6b36083c939b78fafa91caf657c9e06eb7704cd4c223b7d952c2b56c
What was observed
{
"endpoints": [
[
"x402",
"https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/preflight"
]
],
"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": "Verify whether a specific npm or PyPI package version exists before installation, resolve the current/latest version, and report deprecation or yank state when available, plus license and runtime requirement. This is a public-registry package install preflight; it does not resolve dependency graphs or perform vulnerability analysis. Base mainnet USDC",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"ecosystem": "npm",
"package": "express",
"version": "5.1.0"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"capability": "package.preflight",
"data": {
"deprecated": false,
"ecosystem": "npm",
"exists": true,
"latest_version": "5.1.0",
"license": "MIT",
"outdated": false,
"package": "express",
"project_url": "https://expressjs.com/",
"registry_url": "https://registry.npmjs.org/express",
"requested_version": "5.1.0",
"requested_version_exists": true,
"requires_runtime": ">= 18",
"resolved_version": "5.1.0",
"yanked": null
},
"meta": {
"cache": "miss",
"checked_at": "2026-09-26T00:00:00.000Z",
"duration_ms": 25,
"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"
},
"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.preflight",
"description": "Public capability value used to scope this lookup."
},
"data": {
"additionalProperties": false,
"description": "Public data 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"
},
"project_url": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"registry_url": {
"description": "Public requested version value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"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",
"project_url",
"registry_url"
],
"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": "2026-10-25T23:19:02.112Z",
"quality": {
"l30DaysTotalCalls": 6,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-25T23:19:01.922Z"
},
"resource": "https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/preflight",
"serviceName": "Forest Packages",
"tags": [
"package",
"npm",
"pypi",
"registry",
"package-version"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Verify whether a specific npm or PyPI package version exists before installation, resolve the current/latest version, and report deprecation or yank state when available, plus license and runtime requirement. This is a public-registry package install preflight; it does not resolve dependency graphs or perform vulnerability analysis. Base mainnet USDC"
}What the leaf hashes
{"body":"7c36d812a52532b2f92c51a1c2f986516a9fba061b2887f45790ff63c7beb3c0","id":76453,"kind":"listing","method":"baseline/1","observed_us":1793025492291441,"prev":null,"subject":"x402_bazaar:https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/preflight","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).
- 0x3d218e129a601f0f7c176dd5bd39f4a2109d5082678bc38efd7a4eeb2652991e
- 0x310df9544b757984c2c26ea0109d37608a01596cdae8fc707c758d3ffc2a254b
- 0x793eb3dd98db3764d575ff76a8d7713cb080bebc53dcaba01acb17af841473e8
- 0xe49208c977c0f52ba1306d0ad7131763978d5e49bc011f1c589ae9172c846b4d
- 0x7cf9beafa6bf24563356f6042698424ee04c0a94ad268b2f5d9c56e84fe62a12
- 0xa8eba5133f7c3cf667ef96fe9c257fee4f638403dc6b4e41d21cb8c0365a5ecf
- 0x7f9463b87f709270a9d7597c58b6ca38a44c8eb78c3d790f460e0adf4ecfd3e9
- 0xd86ec2dcf7df37f557085948579370c72300cf810de57af63b6322f36573f31d
- 0x7ed5307b5f1fd6387adb988ca74889a8053f81f17a453933322c228bf44a58f4
- 0xae66718d5a1d562c4f24366c92ce0f9cda65031931b8a838a2d71f1f81f474ea
- 0xd7dd18a37a5bb07e81a8083d8d1469e052ceebb2814b00f5a8d4f4cd181a5108
- 0xd04df0f7f3be4d014b4cea8172ada286fbcf5bcb32ae1b281704fd75627b661b
- 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
- 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
- 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae