← The evidence ledger
Evidence row 119601
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/data/csv-profile
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 6125058368e29583306229fec96760353484e2f07e4ae0aa077b660871b8495d
- Leaf
- 0x3dfede4856b53caa61d8207fe7b33b15b2e85a99b741cddabefd14b5e54caac0
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/data/csv-profile"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:csv-profile",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:csv-profile",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:csv-profile",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:csv-profile",
"reference": "5uW12J7sEKLBkM5mgDAm77CXSUCJWez5Q1vgkYUnz6mZ",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjc3YtcHJvZmlsZSIsInJlZmVyZW5jZSI6IjV1VzEySjdzRUtMQmtNNW1nREFtNzdDWFNVQ0pXZXo1UTF2Z2tZVW56Nm1aIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NDU0OTk1Mzd9.Bx4CYs5rpYeMpIBuNzE8iWPQxhb4L4-GVfEYFU7mIfc"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:csv-profile",
"reference": "8S92rjjd9oVkSPhpBmshAan4zNdEb9y4bHHh2DPXS1uy",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjc3YtcHJvZmlsZSIsInJlZmVyZW5jZSI6IjhTOTJyampkOW9Wa1NQaHBCbXNoQWFuNHpOZEViOXk0YkhIaDJEUFhTMXV5IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NDU0OTk1Mzd9.oOxT5RX6p5_Cx5H_u9pMKkvp01cO2pyDMRNZW0JsBkE"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "91233",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:csv-profile",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "94055",
"reference": "Cgz9CyrJB3ssH16Pq8WZ4BT1Ui7Mw3Jzjw5ezWqqmV5N",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjc3YtcHJvZmlsZSIsInJlZmVyZW5jZSI6IkNnejlDeXJKQjNzc0gxNlBxOFdaNEJUMVVpN013M0p6anc1ZXpXcXFtVjVOIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkxMjMzLCJleHAiOjE3OTI1NDU0OTk1Mzd9.14woiMf0apgGEonhNEFGnrtafGdiF1MIa_I07s7gHVw",
"solUsdPrice": 106.32
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Profile CSV text - detected delimiter, per-column type, nulls, unique counts, min, max, mean, median, top values, duplicate rows and ragged rows",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"csv": "name,age,joined\nann,31,2024-01-05\nbob,,2024-02-11\ncy,45,2024-02-11"
},
"type": "http"
},
"output": {
"example": {
"column_profiles": [
{
"looks_like_id": false,
"max_length": 3,
"min_length": 2,
"name": "name",
"non_null": 3,
"nulls": 0,
"top_values": [
{
"count": 1,
"value": "ann"
},
{
"count": 1,
"value": "bob"
},
{
"count": 1,
"value": "cy"
}
],
"type": "string",
"unique": 3
},
{
"looks_like_id": false,
"max": 45,
"mean": 38,
"median": 38,
"min": 31,
"name": "age",
"non_null": 2,
"nulls": 1,
"top_values": [
{
"count": 1,
"value": "31"
},
{
"count": 1,
"value": "45"
}
],
"type": "integer",
"unique": 2
},
{
"looks_like_id": false,
"max": "2024-02-11",
"min": "2024-01-05",
"name": "joined",
"non_null": 3,
"nulls": 0,
"top_values": [
{
"count": 2,
"value": "2024-02-11"
},
{
"count": 1,
"value": "2024-01-05"
}
],
"type": "date",
"unique": 2
}
],
"columns": 3,
"delimiter": ",",
"duplicate_rows": 0,
"rows": 3,
"rows_with_wrong_column_count": 0,
"source": "Computed from the CSV text you supplied"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"csv": {
"description": "CSV text with a header row, up to 20000 characters",
"type": "string"
}
},
"required": [
"csv"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"column_profiles": {
"description": "Column profiles",
"items": {
"properties": {
"looks_like_id": {
"description": "Looks like id identifier"
},
"max_length": {
"description": "Max length"
},
"min_length": {
"description": "Min length"
},
"name": {
"description": "Name"
},
"non_null": {
"description": "Non null"
},
"nulls": {
"description": "Empty cells",
"type": [
"number",
"null"
]
},
"top_values": {
"description": "Top values"
},
"type": {
"description": "Type or kind"
},
"unique": {
"description": "Distinct non-empty values",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"columns": {
"description": "Number of columns",
"type": "number"
},
"delimiter": {
"description": "Delimiter used",
"type": "string"
},
"duplicate_rows": {
"description": "Duplicate rows",
"type": "number"
},
"rows": {
"description": "List of rows",
"type": "number"
},
"rows_with_wrong_column_count": {
"description": "Number of rows with wrong column",
"type": "number"
},
"source": {
"description": "Data source the values come from",
"type": "string"
}
},
"required": [
"rows",
"columns",
"column_profiles"
],
"type": "object"
},
"type": {
"const": "json",
"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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-21T01:16:19.596Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-21T01:16:19.206Z"
},
"resource": "https://saylorinnovations.com/api/data/csv-profile",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"profile a csv file",
"detect column types in csv text",
"count nulls and unique values",
"quick data quality check",
"min max mean of csv columns"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Profile CSV text - detected delimiter, per-column type, nulls, unique counts, min, max, mean, median, top values, duplicate rows and ragged rows"
}What the leaf hashes
{"body":"6125058368e29583306229fec96760353484e2f07e4ae0aa077b660871b8495d","id":119601,"kind":"listing","method":"baseline/1","observed_us":1793025616076813,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/data/csv-profile","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).
- 0x3dfeee9b84b6e171576251b235244f56bfa44c0c5b1cf9ac49df32e93b8c31ba
- 0xb1d00d782cd23b19fbc60c429fc277c9a2871b286d9706afb7001c8cb408be35
- 0x58e4e2803acafa9de5e56eb2b0b2cc4c36a4609c7fffc57ee43c523cfc38b023
- 0x4aa7ddb8525d7ebb18f67ffe6464c3130b2170509f118a5936a3e22e73e62cd7
- 0xc1e45cb34813f87d8d39b7a69c8cf95db4a075e2d490d5407860f8f9802b0933
- 0x98f44216bbfef79297d172101618749dace811ab1ea35a15d8bba6d1102870b0
- 0xeeab856ba1102df60dbb7bf8906514f0991509992b9f7f0cf555858e61621136
- 0xec67cf26667d74b64178007209112e61c88f6197a3034a10c9d767847f86ff34
- 0x6ee75bec467137d3dd8fbeb6a0a73db534b8fad2ed1c71dda0cb5e575c756de2
- 0x45253cd85fd280590cc755c7157b670bb65655451b61e792fbe381fa2fd7507d
- 0xc900cc76dc3702a3e60eaef3577f119464a6a90c3e2b646253f2ba09c089de97
- 0xd04df0f7f3be4d014b4cea8172ada286fbcf5bcb32ae1b281704fd75627b661b
- 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
- 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
- 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae