← The evidence ledger
Evidence row 123897
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://vme5zb7fll.execute-api.us-east-1.amazonaws.com/v1/accept/csv
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- afed51464baec28cf52e248f4e255f8e3fceb75e39ab5570346162a3c6d36988
- Leaf
- 0xf84e02aac9f6ca449126259bd28de42c35df44efba48f6e06130c5c2973b3808
What was observed
{
"endpoints": [
[
"x402",
"https://vme5zb7fll.execute-api.us-east-1.amazonaws.com/v1/accept/csv"
]
],
"name": "Mekler: CSV validation",
"owner_address": null,
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"meklerQuote": "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.b0083f85845276359cf4162766c826100e55b0423219e9bf43b2b168683b30a7",
"memo": "m:sAg_hYRSdjWc9BYnZsgmEA"
},
"maxTimeoutSeconds": 60,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9mMDrHabSf73MPn1ANdANSmsNw2wKiqE7JZ7eD6EUSRc",
"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": "2026-09-29T22:10:35.924Z",
"quality": {
"l30DaysTotalCalls": 6,
"l30DaysUniquePayers": 6,
"lastCalledAt": "2026-09-29T22:10:35.766Z"
},
"resource": "https://vme5zb7fll.execute-api.us-east-1.amazonaws.com/v1/accept/csv",
"serviceName": "Mekler: CSV validation",
"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":"afed51464baec28cf52e248f4e255f8e3fceb75e39ab5570346162a3c6d36988","id":123897,"kind":"listing","method":"baseline/1","observed_us":1793025623841206,"prev":null,"subject":"x402_bazaar:https://vme5zb7fll.execute-api.us-east-1.amazonaws.com/v1/accept/csv","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).
- 0xf84deba4d8c52f78e5ab9ac71a60bc20a5845b5ce45547ee0cffed8faa8dbbe8
- 0xa0b9181b495d74b7866938314a72e5b1ddad8dc1b343e30c0d6ee116717c2dba
- 0x7519f48f941f0a2c8dbc32519ad23d433e1735d1458cf9eddceab68e1b760a6d
- 0xfd84b1c3d06dc860a0415f98aead6b4b243c53b71ff484b83f7fbe679a1b23c1
- 0xd1791f17e699c640435cfd9c917e432dcc8524fd956504a6df6ac917f78a61a7
- 0x9c16553716739d4a94bcb4502726ef6778cbe98412acfd5c45cef2e83d391b18
- 0x16095a10915e2832010eec0684255c5bc54d30f3fc2e02b3d0a2466a586c8495
- 0x4d4931bf7c4e1af4fc887d2beb2661564bd063e4b5c2cca85b41a721cc6e1775
- 0x87a81a686d43cfabc03a9020ff0bb4bd6b8378c6aa3b015f8c7c116eaca932f7
- 0x0eea714eaa5097f3236c62c5eab0dbd64a4b080a83c9a924990a89ae274e7c4e
- 0x0836eb686ada9beddba0f76357ec59493359d2a7c51aa5c4a31d3cfe9873ea74
- 0xf7eba200f6f1012d700fcc53fc6d57dcafd1019c920b1030d42fa21d4af95d94
- 0x694eb701ea36a0e3dcde192253ab85a618738bdc1e3a6e582e6f8bf9647f7a6a
- 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
- 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
- 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae