← The evidence ledger
Evidence row 1261988
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.firstmention.uk/s/api-change-check/compare
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 589f05c4ed1fdfafb1f642693f7daa2e574813cba1119e2618f54213dcea6959
- Leaf
- 0x488c5c2beac2ca97cd397b034a4136bf1def5fba7a878304d2cb1644942e8362
What was observed
{
"endpoints": [
[
"x402",
"https://api.firstmention.uk/s/api-change-check/compare"
]
],
"name": "api-change-check",
"owner_address": "0xddbee715feb5232af1f2b0f07392aaa0c712e572",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xddbeE715fEB5232aF1f2B0f07392aAA0c712E572",
"scheme": "exact"
}
],
"description": "Compare two OpenAPI 3 JSON specs and get a precise breaking-change report: removed paths, renamed parameters, new required fields, type changes. $0.02 via x402.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"after": {
"info": {
"title": "Example",
"version": "2.0"
},
"openapi": "3.0.0",
"paths": {
"/v2/users": {
"get": {
"responses": {
"200": {
"description": "ok"
}
}
}
}
}
},
"before": {
"info": {
"title": "Example",
"version": "1.0"
},
"openapi": "3.0.0",
"paths": {
"/users": {
"get": {
"responses": {
"200": {
"description": "ok"
}
}
}
}
}
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"breaking": true,
"changes": [
{
"detail": "GET /users no longer exists",
"kind": "path_removed",
"path": "/users",
"severity": "breaking"
},
{
"detail": "new endpoint",
"kind": "path_added",
"path": "/v2/users",
"severity": "non_breaking"
}
],
"counts": {
"breaking": 2,
"non_breaking": 0
},
"ok": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"after": {
"description": "The proposed OpenAPI 3 JSON document",
"type": "object"
},
"before": {
"description": "The current OpenAPI 3 JSON document",
"type": "object"
}
},
"required": [
"before",
"after"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"queryParams": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"breaking": {
"type": "boolean"
},
"changes": {
"items": {
"properties": {
"detail": {
"type": "string"
},
"kind": {
"type": "string"
},
"path": {
"type": "string"
},
"severity": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"counts": {
"properties": {
"breaking": {
"type": "number"
},
"non_breaking": {
"type": "number"
}
},
"type": "object"
},
"ok": {
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-30T07:24:17.866Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-30T07:24:17.279Z"
},
"resource": "https://api.firstmention.uk/s/api-change-check/compare",
"serviceName": "api-change-check",
"tags": [
"openapi",
"api-diff",
"breaking-change",
"contract-testing"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Compare two OpenAPI 3 JSON specs and get a precise breaking-change report: removed paths, renamed parameters, new required fields, type changes. $0.02 via x402."
}What the leaf hashes
{"body":"589f05c4ed1fdfafb1f642693f7daa2e574813cba1119e2618f54213dcea6959","id":1261988,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385518437416,"prev":null,"subject":"x402_bazaar:https://api.firstmention.uk/s/api-change-check/compare","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (243099 rows).
- 0x488c2eff235a0423865d6ab33d5f379eca79b10f4971d57bbb35c7edcdf0f518
- 0xfc8065abbdec41a3c0a0cffa3fc762330913261ba11e077e6addb4a772db8784
- 0x2f7a7092c67bfa95539a86ea1f41247af48ce3a478ce8ea3de79de130d5e12c2
- 0x49d145d6a9336d3cd77ad83022ef1d9069ebfb01474612c560ae658721d7cddc
- 0x87b486be3c66a69ac6631b33a48ce89818df14816e119ea4a766bf4526c10dbd
- 0x48de41e815c11f87da260f6794b3e42dd544264da07064ca3551462c6c1d7375
- 0xde1e3decf187c59c1082e60e849229c13af13022190dbc64811647d1594e30fa
- 0xcd0b206421509b56a3404ee7c9b9e56d73f8f2ced865fe67e651831059659051
- 0x234acb1ad5a9f3dea400dfd7b384a5b3ba2597ec55a9b698bf81cc6972a34245
- 0x752dcd52d12124f8b569401b3acc28245e0656579787b298ec7378662644f440
- 0x92b466f485a65b10435cb6d2c8e51df9afd133ff49f84fa719af048b03140380
- 0xbd5c85e2682d76725be130a44cbbcc9d4be383fb556e6028d95854d01e041ed3
- 0x0b8a485e6ab0668fbad8011e734741b720cdbb463970428343e7f73238a809f9
- 0x9ace81ddbf101c81e3033efcaf62a4f4ad2b7dc0b97b61a7adf81117108ff2f7
- 0xa937fac4496d1d79e24c5f12abd33388ef710185b9d82165d4b39af6bd434545
- 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
- 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
- 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147
- Day root
- 0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875
- Chained
- 0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822
- Published
- On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861