← The evidence ledger
Evidence row 3064972
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.fresh402.com/v2/openapi-contract-diff
- Recorded
- Previous row
- #2633867
- Body SHA-256
- 1c7d110ec8be7fc06c57cd5602d161314f7a4265dd1963b825e7f04ab95c1eeb
- Leaf
- 0x09fbca5163c0db23100afb49917ba341d6a9de2977be8fd6217f25cc3bcfb886
What was observed
{
"endpoints": [
[
"x402",
"https://api.fresh402.com/v2/openapi-contract-diff"
]
],
"name": "Fresh402",
"owner_address": "0xfac492a8d7843c9afcca6a1691bccb5425ab14f3",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xFAC492A8D7843C9aFCCa6A1691BCCB5425ab14F3",
"scheme": "exact"
}
],
"description": "Use for conservative OpenAPI 3.0/3.1 JSON compatibility evidence after unfiltered free registration. Compare previous or fixed baseline, or override with an available same-watch hash. Bounded path/operation analysis with uncertainty warnings; no YAML, external reference fetch or execution of described operations. x402 $0.020 USDC on Base.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"compare_to": "previous",
"watch_id": "w_0123456789abcdef0123456789abcdef"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"algorithm": "openapi-directional-v2",
"changed": true,
"changes": [
{
"classification": "definitely_breaking",
"path": "/paths/~1pets/get",
"rule": "http_method_removed"
}
],
"counts": {
"additive": 0,
"definitely_breaking": 1,
"potentially_breaking": 0,
"unclassified": 0
},
"final_url": "https://example.com/",
"hash": "1111111111111111111111111111111111111111111111111111111111111111",
"previous_hash": "0000000000000000000000000000000000000000000000000000000000000000",
"rules_version": 2,
"semantic_model_used": false,
"source_provenance": {
"baseline_url": "https://example.com/"
},
"url": "https://example.com/",
"watch_id": "w_0123456789abcdef0123456789abcdef"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"description": "Compare a registered, unfiltered public JSON OpenAPI 3.0/3.1 contract; watch_id is required, compare_to defaults to previous, and optional previous_hash overrides it. Bounded structural analysis, not a complete compatibility proof; no YAML, external reference fetching or execution of described API operations. Unknown fields are rejected.",
"properties": {
"compare_to": {
"default": "previous",
"description": "Optional mode: 'previous' (default) compares with the latest saved OpenAPI Contract Diff snapshot; 'baseline' uses its fixed saved baseline. Before contract history exists, the current registered watch state seeds the initial baseline. previous_hash overrides the mode. 'hash' appears only in results, not as an accepted input mode.",
"enum": [
"previous",
"baseline"
],
"type": "string"
},
"previous_hash": {
"description": "Optional 64-character hexadecimal reference hash, case-insensitive. Prefer a hash returned by OpenAPI Contract Diff for this same watch, matching a retained contract snapshot or fixed baseline. The current registered core hash is also accepted as a fallback: without a matching contract snapshot, the fixed baseline (or registered state if no baseline exists) is used. Overrides compare_to; unavailable hashes return 404. Omit to use the selected mode.",
"pattern": "^[a-fA-F0-9]{64}$",
"type": "string"
},
"watch_id": {
"description": "Required existing watch ID: 'w_' plus 32 lowercase hexadecimal characters. Obtain it with free fresh402_register or POST /v1/register using the public JSON OpenAPI 3.0/3.1 URL and no selector or ignore rules. Reuses the saved URL; do not pass url here. YAML, non-OpenAPI documents and scoped/filtered watches are unsupported. Illustrative IDs must be replaced.",
"pattern": "^w_[a-f0-9]{32}$",
"type": "string"
}
},
"required": [
"watch_id"
],
"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": {
"algorithm": {
"type": "string"
},
"assumptions": {
"items": {
"type": "string"
},
"type": "array"
},
"changed": {
"type": "boolean"
},
"changes": {
"items": {
"properties": {
"after": {
"type": "string"
},
"before": {
"type": "string"
},
"classification": {
"enum": [
"definitely_breaking",
"potentially_breaking",
"additive",
"unclassified"
]
},
"evidence_index": {
"description": "Opt-in contract view only: index in the full original durable changes list.",
"minimum": 0,
"type": "integer"
},
"path": {
"type": "string"
},
"rule": {
"type": "string"
},
"scope": {
"enum": [
"selected_operation",
"shared_or_unknown"
]
}
},
"required": [
"classification",
"rule",
"path"
],
"type": "object"
},
"type": "array"
},
"changes_truncated": {
"type": "boolean"
},
"compare_to": {
"enum": [
"previous",
"baseline",
"hash"
]
},
"comparison_source": {
"type": "string"
},
"contract_view": {
"properties": {
"counts_scope": {
"const": "full_document"
},
"excluded_operation_changes": {
"type": "integer"
},
"hash_scope": {
"type": "string"
},
"limitation": {
"type": "string"
},
"original_result_sha256": {
"type": "string"
},
"representation": {
"const": "contract-impact-v1"
},
"status": {
"enum": [
"breaking",
"review_required",
"no_breaking_change_observed"
]
},
"used_operations": {
"items": {
"properties": {
"method": {
"enum": [
"get",
"put",
"post",
"delete",
"options",
"head",
"patch",
"trace"
]
},
"path": {
"type": "string"
}
},
"required": [
"path",
"method"
],
"type": "object"
},
"type": "array"
}
},
"type": "object"
},
"counts": {
"properties": {
"additive": {
"type": "integer"
},
"definitely_breaking": {
"type": "integer"
},
"potentially_breaking": {
"type": "integer"
},
"unclassified": {
"type": "integer"
}
},
"type": "object"
},
"descriptive_only": {
"type": "boolean"
},
"fetched_at": {
"type": "string"
},
"final_url": {
"type": "string"
},
"hash": {
"type": "string"
},
"openapi_versions": {
"properties": {
"after": {
"type": "string"
},
"before": {
"type": "string"
}
},
"type": "object"
},
"previous_hash": {
"type": "string"
},
"reference_resolutions": {
"type": "integer"
},
"rules_version": {
"type": "integer"
},
"semantic_model_used": {
"type": "boolean"
},
"source_provenance": {
"properties": {
"baseline_at": {
"type": "string"
},
"baseline_url": {
"type": "string"
},
"final_url": {
"type": "string"
},
"raw_source_hash": {
"type": "string"
},
"registered_core_hash": {
"type": "string"
},
"requested_url": {
"type": "string"
}
},
"type": "object"
},
"url": {
"type": "string"
},
"warnings": {
"items": {
"type": "string"
},
"type": "array"
},
"watch_id": {
"type": "string"
},
"work_units": {
"type": "integer"
}
},
"required": [
"watch_id",
"hash",
"previous_hash",
"changed",
"changes",
"counts",
"source_provenance",
"rules_version"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793758835/bazaar-icons/ff5e17044e175886.png",
"lastUpdated": "2026-11-04T02:20:57.62Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-04T02:20:56.804Z"
},
"resource": "https://api.fresh402.com/v2/openapi-contract-diff",
"serviceName": "Fresh402",
"tags": [
"openapi-compatibility",
"api-contract-diff",
"breaking-change-review"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Use for conservative OpenAPI 3.0/3.1 JSON compatibility evidence after unfiltered free registration. Compare previous or fixed baseline, or override with an available same-watch hash. Bounded path/operation analysis with uncertainty warnings; no YAML, external reference fetch or execution of described operations. x402 $0.020 USDC on Base."
}What the leaf hashes
{"body":"1c7d110ec8be7fc06c57cd5602d161314f7a4265dd1963b825e7f04ab95c1eeb","id":3064972,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793822235400843,"prev":2633867,"subject":"x402_bazaar:https://api.fresh402.com/v2/openapi-contract-diff","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (424109 rows).
- 0x09fbc38b91ff1f1bedb7028cfd0cb0bcc6f60cb7f2b9f4e20ba84cf742ad0540
- 0x8799e4b29b766bd085b22e363387b5704681a44bf5c9b1e213a8692bfb5b1a39
- 0x111edf2e5898104e882174f61b5f279886e9f0c114ce62dcea31359040264ef3
- 0x5140fd84460b7ce1b088fc9140efc5dd6f370ca0553c821b6018c518ab1cf110
- 0x758edefbb9c7e887b56ed3858ef8f0ecc8901f34d34ea597c2afc097cc32c570
- 0xa274ae3b05eca8dfd2338f688209a94a78953b3cc3eae8dda24bf1549fa65522
- 0x3c522b2bd97e2a5bac38f345587ecefce958227650c0d10426bfddec61ff3804
- 0xf929b08ac14745b3917037bc30ba104d6520e0ae04460af6d86076d9b87fc3d7
- 0xbc4e2c923fe0bde69213ceb812150123ce6a2497cc68c12efe7c57a81f655e0e
- 0x501f7d1ebf1e93498c26fdd427cf2be4579e757fdbdff9740a7fba4ead44b193
- 0x0e547f5b12f7782bf054e7abec6bd65ef101b4cd03863b3923f68a14eb711a50
- 0x93b0ffa143f46029789efe471e67b2225a4e94de1d2a56c6b4095e0aad3e561e
- 0xe284656a9f0be097a543d51ee1f61ecff7529899f302f37ff164b86283b4e75a
- 0x100f0c53fd119963d622a12ca44bbe30cb6c40b8715b5360425f34a4bb487b35
- 0x25c6f3031e09eeef9fb0f5c010f6aa1605f7af5f1a8859ce4db5ae48d0598359
- 0xcdac863807ea81d51a9ab718457637e91824fd377a06759901352d9a23933554
- 0x01c26569ec8e231551522ab452fd5d417c3d66f29c7c76886a8ec295a18dd624
- 0x02f64ca19e7d9b09718851d2ce3abf641982580de99411626d894607cf386cd5
- 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5
- Day root
- 0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee
- Chained
- 0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b
- Published
- On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345