← The evidence ledger
Evidence row 2250046
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://detect.halowerk.com/v1/openapi/openapi-query-assignment-collisions
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 0cd4b0bba005e2e1458593c2fddb221afc5c584ffaec4ac0d1e5479cc72c3c81
- Leaf
- 0x29a3f1832b7e0eedbfde6f4ffef5471b675068cb408b7dc7a80e59e6c3a52425
What was observed
{
"endpoints": [
[
"x402",
"https://detect.halowerk.com/v1/openapi/openapi-query-assignment-collisions"
]
],
"name": "detect.halowerk.com/v1/openapi/openapi-query-assignment-collisions",
"owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
"raw": {
"accepts": [
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"eip712Domain": {
"chainId": 8453,
"name": "USD Coin",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"version": "2"
},
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"scheme": "exact"
}
],
"description": "Vor Client-Erzeugung nachweisen, ob unterschiedliche erlaubte Query-Argumente dieselben Anfragebytes erzeugen.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"artifact": {
"operation_selector": {
"method": "get",
"path": "/items"
},
"serializer_policy": {
"object_order": "ascii_key_ascending",
"optional_absence": "omit",
"parameter_order": "operation_parameter_array",
"query_equality": "exact_serialized_bytes"
},
"spec": {
"info": {
"title": "Synthetic query contract",
"version": "1"
},
"openapi": "3.1.1",
"paths": {
"/items": {
"get": {
"parameters": [
{
"explode": true,
"in": "query",
"name": "p",
"required": false,
"schema": {
"additionalProperties": false,
"enum": [
{
"x": "a"
}
],
"properties": {
"x": {
"type": "string"
}
},
"type": "object"
},
"style": "form"
},
{
"explode": true,
"in": "query",
"name": "x",
"required": false,
"schema": {
"enum": [
"a"
],
"type": "string"
},
"style": "form"
}
]
}
}
}
}
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"billable": true,
"findings": [
{
"confidence": 100,
"evidence": [],
"limits": [],
"module": "openapi-query-assignment-collisions",
"state": "observed",
"value": {
"ambiguous_query_classes": 1,
"assignments_in_ambiguous_classes": 2,
"declared_assignments": 4,
"distinct_serialized_queries": 3,
"first_collision": {
"differing_parameter_indices": [
0,
1
],
"left_domain_indices": [
0,
1
],
"right_domain_indices": [
1,
0
]
},
"maximum_preimage_size": 2,
"parameters": 2
},
"warnings": []
}
],
"known_count": 1,
"scope": {
"contact_values_returned": false,
"network": false,
"supplied_artifact_only": true
},
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"artifact": {
"additionalProperties": false,
"maxProperties": 128,
"properties": {
"operation_selector": {
"maxProperties": 128,
"type": "object"
},
"serializer_policy": {
"maxProperties": 128,
"type": "object"
},
"spec": {
"maxProperties": 128,
"type": "object"
}
},
"required": [
"spec",
"operation_selector",
"serializer_policy"
],
"type": "object"
}
},
"required": [
"artifact"
],
"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": {
"properties": {
"billable": {
"const": true
},
"findings": {
"items": {
"additionalProperties": false,
"properties": {
"confidence": {
"enum": [
0,
100
]
},
"evidence": {
"maxItems": 0,
"type": "array"
},
"limits": {
"maxItems": 0,
"type": "array"
},
"module": {
"maxLength": 96,
"type": "string"
},
"state": {
"enum": [
"observed",
"not_observed",
"unknown"
]
},
"value": {
"type": [
"object",
"null"
]
},
"warnings": {
"items": {
"maxLength": 128,
"type": "string"
},
"maxItems": 1,
"type": "array"
}
},
"required": [
"module",
"value",
"state",
"confidence",
"evidence",
"warnings",
"limits"
],
"type": "object"
},
"maxItems": 1,
"minItems": 1,
"type": "array"
},
"known_count": {
"const": 1
},
"scope": {
"type": "object"
},
"warnings": {
"type": "array"
}
},
"required": [
"findings",
"known_count",
"billable",
"warnings",
"scope"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T16:53:45.919Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T16:53:45.723Z"
},
"resource": "https://detect.halowerk.com/v1/openapi/openapi-query-assignment-collisions",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Vor Client-Erzeugung nachweisen, ob unterschiedliche erlaubte Query-Argumente dieselben Anfragebytes erzeugen."
}What the leaf hashes
{"body":"0cd4b0bba005e2e1458593c2fddb221afc5c584ffaec4ac0d1e5479cc72c3c81","id":2250046,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647797635721,"prev":null,"subject":"x402_bazaar:https://detect.halowerk.com/v1/openapi/openapi-query-assignment-collisions","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).
- 0x29a3ec5a27d563dc8fac39b65806e2a37ecf7c95c9d2b2df957c30afccf1ad2a
- 0xa84ae7a6ce72e97e002637c5d4e5b94c0526daed64400331ca40f7f0b88bb0ae
- 0xe8eb559d0447f490bacec2657b12c75aa1f1e11f1a117e2499198907fb2cc212
- 0xee4beec1149d6def149894eb46e9dbf507a581f5cc8f0dbdbbe07a6ecaf4271c
- 0x83b177c27859c58e2a842dab1d0e46a33f6982e076494d08499cc3fdf35d1cf1
- 0x5ed6eb0183ea54bb6499203b31f7099d796bcbd53295d34b416d0fc09ee2cbef
- 0x82883fe0fd1186ab074222a4a3f1ea163a0caa5e5966e888ec82dc4c742cfac4
- 0x372b6635bc5194ad5744e53b598482951344490521a149709dfee37bc8825560
- 0x4c45df7d1f2573928405c36fb51a4f3a4fda21b647c24d258e06575c0757e0e9
- 0x224b2001fa169ff32aeb1fb8a7039cf41cc42f7c621c3c9263b683597189e92e
- 0x3a357782ba07e599ae562ea10c121f44a54f1714e65b1a2ebad231777f58f729
- 0xe12350a7a5fded6eeb0ecfd68a402669600feceb96d01436f0e00602ab64078d
- 0x51e311ca2900bdc02d33f863997ecf605beee83455e2af17106fa126c029645d
- 0x8d443fc9063dd9f00f5f7476005a8915a8222f4611f5601e212bafbdbbdd6165
- 0x9cb76be6423133397c3da69f801d6af35dcce77b458aa17bd796c877ed7bc8fd
- 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af