← The evidence ledger
Evidence row 2201679
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://license-intel.x402tookit.com/license-expression-check
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 0a56c19a936d8e8b4d1c4ebd27e2f1ee11ee014cf764ee60bd7f18c37fcbb8ad
- Leaf
- 0xe44115d2ac92ee750371a9f0c4d56893c25156df5ae73e2d5b79ab2fe2860aba
What was observed
{
"endpoints": [
[
"x402",
"https://license-intel.x402tookit.com/license-expression-check"
]
],
"name": "License Intel",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Validate an SPDX license expression (AND, OR, WITH, +): syntax, known ids, known exceptions and deprecated identifiers.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"expression": "GPL-2.0-or-later WITH Classpath-exception-2.0 OR MIT"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T14:39:35.213Z",
"attribution": "License list: SPDX (CC0-1.0). Summaries: Choose a License (choosealicense.com, CC BY 3.0).",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"exceptions": [
{
"canonicalId": "Classpath-exception-2.0",
"id": "Classpath-exception-2.0",
"name": "Classpath exception 2.0",
"status": "valid"
}
],
"expression": "GPL-2.0-or-later WITH Classpath-exception-2.0 OR MIT",
"licenses": [
{
"canonicalId": "GPL-2.0-or-later",
"id": "GPL-2.0-or-later",
"name": "GNU General Public License v2.0 or later",
"osiApproved": true,
"plusOnDeprecated": false,
"status": "valid"
},
{
"canonicalId": "MIT",
"id": "MIT",
"name": "MIT License",
"osiApproved": true,
"plusOnDeprecated": false,
"status": "valid"
}
],
"listVersion": "3.29.0",
"notChecked": [
"what the expression means legally: AND/OR do not tell you which terms you may choose",
"LicenseRef-* and DocumentRef-* custom identifiers (accepted by form, not resolved)",
"…1 more"
],
"operators": [
"WITH",
"OR"
],
"reasons": [
"License list: SPDX (CC0-1.0). Summaries: Choose a License (choosealicense.com, CC BY 3.0).",
"OR means the recipient may choose; AND means all apply; WITH adds an exception to one license."
],
"source": "SPDX License List + Choose a License",
"sourceUrl": "https://spdx.org/licenses/",
"summary": "Valid SPDX expression; 2 licenses, operators: WITH, OR.",
"verdict": "VALID",
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"expression": {
"description": "An SPDX expression, for example MIT OR (Apache-2.0 AND BSD-3-Clause)",
"type": "string"
}
},
"required": [
"expression"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"attribution": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"exceptions": {
"items": {
"properties": {
"canonicalId": {
"type": [
"null",
"string"
]
},
"id": {
"type": [
"null",
"string"
]
},
"name": {
"type": [
"null",
"string"
]
},
"status": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"expression": {
"type": [
"null",
"string"
]
},
"licenses": {
"items": {
"properties": {
"canonicalId": {
"type": [
"null",
"string"
]
},
"id": {
"type": [
"null",
"string"
]
},
"name": {
"type": [
"null",
"string"
]
},
"osiApproved": {
"type": [
"boolean",
"null"
]
},
"plusOnDeprecated": {
"type": [
"boolean",
"null"
]
},
"status": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"listVersion": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"operators": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"warnings": {
"type": [
"array",
"null"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:33:15.578Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:33:15.288Z"
},
"resource": "https://license-intel.x402tookit.com/license-expression-check",
"serviceName": "License Intel",
"tags": [
"license",
"spdx",
"expression",
"validation"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Validate an SPDX license expression (AND, OR, WITH, +): syntax, known ids, known exceptions and deprecated identifiers."
}What the leaf hashes
{"body":"0a56c19a936d8e8b4d1c4ebd27e2f1ee11ee014cf764ee60bd7f18c37fcbb8ad","id":2201679,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646807837461,"prev":null,"subject":"x402_bazaar:https://license-intel.x402tookit.com/license-expression-check","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0xe44163e3c3863a4700cbf34b5eed750ae20f011c5955d818fdfcc77e17d2dcaf
- 0xdd61bec111c11ad57c5c3be700205e5560e48dcc20bae97653184787afb69b2e
- 0xd85e0647586b981033e9cd98b76be9d9aa81d02a8d94d3e4a0d781dd1a2c5d4b
- 0xc450751a803fafac27e5739dcdd1ea00ac37c2f448dba9aa56f096844fd55df7
- 0xd9384d35649036b772affb58b6ad45638be964bf871c2878a845794cefb19e2e
- 0x762844e1462e61493c4f8fe8e6e4176dbc8f679a8c237246e553023d279376c9
- 0xec8e7dad47b1943da55c82c4259c2f956e8e2a1bc548417a3df00e7e75b96b39
- 0x7629c4db004ab98c62f4de094c31f925ed332cadab5295d940dca851f593b489
- 0xb22448661c465329e58e2fd23269d545266254047ffec5f6478f33bf42609cec
- 0xd067d2a3fb0205ae430314972d29795e777d38db315df596f6576650017eb4a3
- 0xcf1656df47779b123d1f86c1f7f8f7586e0e8f27f4bdc7eb3239bf76a8cd8ae9
- 0x22bf176b50c1376a81c95eb70dd7c6a4714266ec78d08fbb68be60b003a0354c
- 0x5dd9fbf811b05f3e5af51f812b6eea86a039a192f115aecc0fd37a502e3a04f1
- 0x3e441d3f53c7b69d6c73ef93d327dfc3071a522c550856540832b34fcb531738
- 0xd643f764eee39146411d4bff8903a327f4f8f55616e14e57281a245206d6ed2b
- 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
- 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af