← The evidence ledger
Evidence row 67346
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.mekler.ai/v1/data/csv/validate-data
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 05ddaa2fb7ed1c351d51fd76359a6b9a1624810e1e4ab684d5fa72b76ca04b6a
- Leaf
- 0x0d8d8e080c9f529dce56a1f542cebf7f5a84af8b4a0583df14414ee2071c2fd8
What was observed
{
"endpoints": [
[
"x402",
"https://api.mekler.ai/v1/data/csv/validate-data"
]
],
"name": "Mekler AI",
"owner_address": "0xf6c6e2e530bb311c14a49c1a07c720fc232c07c5",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"meklerQuote": "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.b71dd214811c430fd0d7f55ea4f396fb0ce532ed37c0debd84aa8b5592d1ddb3",
"memo": "m:tx3SFIEcQw_Q1_VepPOW-w"
},
"maxTimeoutSeconds": 60,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9mMDrHabSf73MPn1ANdANSmsNw2wKiqE7JZ7eD6EUSRc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"meklerQuote": "eyJhbW91bnQiOiI1MDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwiZGlnZXN0IjoiNTBlNmZhNTc1Y2U2YTA2MGEyMjFmNjc1ODQ2ZmRmMjRlZGFhYTI4OThjNjIxZmI0NWE4ZGUyNmQ5MTUwYWE0NCIsImV4cGlyZXMiOjE3OTE0NzYyMTEsImZlZVBheWVyIjoiIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwib3JpZ2luIjoiaHR0cHM6Ly9hcGkubWVrbGVyLmFpIiwicGF0aCI6Ii92MS9kYXRhL2Nzdi92YWxpZGF0ZS1kYXRhIiwicGF5VG8iOiIweEY2YzZFMmU1MzBiYjMxMWMxNGE0OUMxYTA3QzcyMGZjMjMyYzA3YzUiLCJwcm92aWRlciI6ImNkcCIsInZlcnNpb24iOiJjc3YtdmFsaWRhdG9yLXYxIn0=.9b642611ea8a0df6ae077a0f0b762f2a3599f1f14730f8f7cd9d6afab810e855",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0xF6c6E2e530bb311c14a49C1a07C720fc232c07c5",
"scheme": "exact"
}
],
"description": "Validate CSV before import using a fixed JSON column specification. Checks missing/extra columns, required cells, string/integer/decimal/boolean/date types, uniqueness, allowed values and numeric/row-count bounds. Returns pass/fail with row/column error codes. POST JSON with csv and spec.columns; schemas/examples attached. Full contract: /openapi.json. Max 2,000 rows, 50 columns, 256 KiB; first 50 failures. No formulas, cross-column rules, fact checking or data repair.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"csv": "id,amount\na,12.50\na,-2.00\n",
"spec": {
"columns": [
{
"name": "id",
"required": true,
"type": "string",
"unique": true
},
{
"max": "100",
"min": "0",
"name": "amount",
"required": true,
"type": "decimal"
}
],
"min_rows": 1
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"boundary": "Only supplied explicit criteria checked; no certification of truth or subjective quality.",
"failure_count": 2,
"failures": [
{
"code": "unique",
"column": "id",
"row": 2
},
{
"code": "min",
"column": "amount",
"row": 2
}
],
"failures_truncated": false,
"receipt_sha256": "32265ae46050fa0067b9adb0df085a5cf3d9fa3d47d91e9ea2f61135a382d8ac",
"rows_checked": 2,
"schema_version": 1,
"verdict": "fail"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"csv": {
"description": "UTF-8 comma-delimited CSV with header. No trimming. Data record numbers start at 1; quoted newlines are one record.",
"type": "string"
},
"spec": {
"additionalProperties": false,
"properties": {
"allow_extra_columns": {
"default": false,
"description": "If false, reject CSV headers not named in columns.",
"type": "boolean"
},
"columns": {
"description": "Fixed built-in checks. Every named column must exist, even when required is false.",
"items": {
"additionalProperties": false,
"properties": {
"enum": {
"description": "Exact allowed cell strings, compared without trimming or normalization.",
"items": {
"maxLength": 1000,
"type": "string"
},
"maxItems": 100,
"minItems": 1,
"type": "array"
},
"max": {
"description": "Inclusive numeric bound; allowed only for integer or decimal columns.",
"oneOf": [
{
"type": "number"
},
{
"type": "string"
}
]
},
"min": {
"description": "Inclusive numeric bound; allowed only for integer or decimal columns.",
"oneOf": [
{
"type": "number"
},
{
"type": "string"
}
]
},
"name": {
"maxLength": 100,
"minLength": 1,
"type": "string"
},
"required": {
"default": false,
"description": "Reject empty cells. Whitespace is not trimmed.",
"type": "boolean"
},
"type": {
"description": "string: literal text; integer: base-10, no plus sign or leading zeros; decimal: plain decimal, no exponent; boolean: lowercase true/false; date: valid YYYY-MM-DD.",
"enum": [
"string",
"integer",
"decimal",
"boolean",
"date"
],
"type": "string"
},
"unique": {
"default": false,
"description": "Reject repeated nonempty values within this column; numeric values compare numerically.",
"type": "boolean"
}
},
"required": [
"name",
"type"
],
"type": "object"
},
"maxItems": 50,
"minItems": 1,
"type": "array"
},
"max_rows": {
"default": 2000,
"maximum": 2000,
"minimum": 0,
"type": "integer"
},
"min_rows": {
"default": 0,
"maximum": 2000,
"minimum": 0,
"type": "integer"
}
},
"required": [
"columns"
],
"type": "object"
}
},
"required": [
"csv",
"spec"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"boundary": {
"type": "string"
},
"failure_count": {
"minimum": 0,
"type": "integer"
},
"failures": {
"items": {
"properties": {
"code": {
"enum": [
"missing_column",
"extra_columns",
"row_width",
"required",
"type",
"min",
"max",
"enum",
"unique",
"min_rows",
"max_rows"
],
"type": "string"
},
"column": {
"description": "Column name, or null when the error applies to the row or file.",
"type": [
"string",
"null"
]
},
"row": {
"description": "One-based data record, excluding header; null for file/header errors.",
"type": [
"integer",
"null"
]
}
},
"required": [
"code",
"row",
"column"
],
"type": "object"
},
"maxItems": 50,
"type": "array"
},
"failures_truncated": {
"type": "boolean"
},
"receipt_sha256": {
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"rows_checked": {
"minimum": 0,
"type": "integer"
},
"schema_version": {
"enum": [
1
],
"type": "integer"
},
"verdict": {
"enum": [
"pass",
"fail"
],
"type": "string"
}
},
"required": [
"schema_version",
"verdict",
"rows_checked",
"failure_count",
"failures",
"failures_truncated",
"receipt_sha256",
"boundary"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-08T16:14:51.296Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-08T16:14:49.908Z"
},
"resource": "https://api.mekler.ai/v1/data/csv/validate-data",
"serviceName": "Mekler AI",
"tags": [
"csv",
"data-validation",
"data-quality"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Validate CSV before import using a fixed JSON column specification. Checks missing/extra columns, required cells, string/integer/decimal/boolean/date types, uniqueness, allowed values and numeric/row-count bounds. Returns pass/fail with row/column error codes. POST JSON with csv and spec.columns; schemas/examples attached. Full contract: /openapi.json. Max 2,000 rows, 50 columns, 256 KiB; first 50 failures. No formulas, cross-column rules, fact checking or data repair."
}What the leaf hashes
{"body":"05ddaa2fb7ed1c351d51fd76359a6b9a1624810e1e4ab684d5fa72b76ca04b6a","id":67346,"kind":"listing","method":"baseline/1","observed_us":1793025462615456,"prev":null,"subject":"x402_bazaar:https://api.mekler.ai/v1/data/csv/validate-data","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).
- 0x0d8d57a33ed1fbcbaeb479b235a56d28e4b29932c0716edd70c358ff06029a7e
- 0x282b40f26a161d246c6fb0b9adf28bdd2f1351735c9974fbca43977aab381a98
- 0x08169aac51460dff57badc604feeb5e153fe7fbfd05302569fa78024e65f8a49
- 0xabce93838921581842d729287e1713688d1d1df5c399a13fd5da4bd11f6ed861
- 0xdadffa4a30b7f268db05667645a605aa0342c57c9b427b07adac9031b7f0f3da
- 0x58d3a30986ef1b6d02b8aeb081ffff516c9694f733de3731db4b29a9d8d14581
- 0xc572f8b948bb3e83c43e137cfae56de438af371aa1ef994208172206908cccac
- 0x843b1d37eb0424f8f59251dd9fcae66138ab41afa34e5003b87c185ca24bd607
- 0x11453579365b464f8ae186361df4e55e1fa62386275493eb4eb12feb14626e3d
- 0x6660c80902a0d0eb7e099a74231019f561e7aad745384cd90bc57b2aac09aef3
- 0xce6314435eaa4c458576d2a1150a919748260a8a10f1eae96b7a8bc75ff32536
- 0x362683225b724b8d2d652a95968c57a6f4199ed4f2ad60900fc3603492f17520
- 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
- 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
- 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae