← The evidence ledger
Evidence row 90856
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-06-208
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 36654257803d11a467edff95bb01175ae369396fa59c854f14fc8f9bb5f799d0
- Leaf
- 0x492461a0ed66e7b89bed5a27a0b322971d0f77c03dd464748369d7bdf17b333e
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-06-208"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-06-208",
"owner_address": "0x8bc2aecdd86097f74a1a5fa17764108d9a683c8c",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x8bc2AECdD86097F74a1a5fa17764108D9a683C8C",
"scheme": "exact"
}
],
"description": "Lab observations — Record quality audit + String normalisation + Explicit missing-value fill: Record quality audit + String normalisation + Explicit missing-value fill for supplied lab observations records (measurement, replicate_count). Up to 200 rows; 3 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 3 supplied-data reports for up to 200 rows.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"field": "measurement",
"method": "median",
"rows": [
{
"course_group": "group-a",
"date": "2026-10-01",
"measurement": 10,
"replicate_count": 1,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"measurement": 20,
"replicate_count": 2,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"measurement": 15,
"replicate_count": 3,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"measurement": 30,
"replicate_count": 4,
"row_id": "row-4"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"files": [],
"order_id": "ord_example",
"result": {
"completed": true,
"workflow": "ib26-education-06-208"
},
"sku": "assistant-ib26-education-06-208",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"field": {
"default": "measurement",
"enum": [
"measurement",
"replicate_count"
],
"type": "string"
},
"method": {
"default": "median",
"enum": [
"zero",
"mean",
"median"
],
"type": "string"
},
"rows": {
"default": [
{
"course_group": "group-a",
"date": "2026-10-01",
"measurement": 10,
"replicate_count": 1,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"measurement": 20,
"replicate_count": 2,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"measurement": 15,
"replicate_count": 3,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"measurement": 30,
"replicate_count": 4,
"row_id": "row-4"
}
],
"items": {
"additionalProperties": false,
"properties": {
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"measurement": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"replicate_count": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"row_id": {
"default": "",
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"row_id",
"course_group",
"date",
"measurement",
"replicate_count"
],
"type": "object"
},
"maxItems": 200,
"minItems": 1,
"type": "array"
}
},
"required": [
"rows",
"field",
"method"
],
"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": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-26T04:13:29.81Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-24T20:11:38.493Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-06-208",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Lab observations — Record quality audit + String normalisation + Explicit missing-value fill: Record quality audit + String normalisation + Explicit missing-value fill for supplied lab observations records (measurement, replicate_count). Up to 200 rows; 3 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 3 supplied-data reports for up to 200 rows."
}What the leaf hashes
{"body":"36654257803d11a467edff95bb01175ae369396fa59c854f14fc8f9bb5f799d0","id":90856,"kind":"listing","method":"baseline/1","observed_us":1793025525489311,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-06-208","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).
- 0x49249af8962ceeda05e35b896afcf2fe0225b8d8db213be1401383ce492720a0
- 0x23fbec5b521599ead0ba45879418312418a1875cd49defa52b49c72fcee94676
- 0x0b9ec59acc0d0bb8ef7c7253f110f7f2d20b94e14b4fd10d6d0ad2c5550cf0c8
- 0x5c30708bfda4e451ac02d45c366caaf8c0bcc0a3454de5b829a339ab008a58d7
- 0x7842aef7b820d57b38dd8bb17ef4f32cbca2064a8434ad2f8cec91397c828ba6
- 0x9c73341f5c1ef736edbf3a881035fc9b514eb703fda04a6dbc2fcd747017a6d3
- 0x5db15b0f640db361ce4e7fd848035fdd06ce7a9723f2076ec1d421c089e7802c
- 0xc7030292d06775814630ce84a84f8aace027d708bd27b383e364a8af1e25fd7f
- 0x7541cd1918e38f4a0f6add627a7846433315f4898be3452c4fe4e6121a5b9747
- 0x1c31b9fd609755e3d960fab27bd2b1eb3a2104f15e3f9261a56d30e3613f4c01
- 0xa40c09a143bc388ccac821ec3854902941c513470a57a806c98060a6d63aedf9
- 0xee7d5711cd2515f4b08f3e4041d3d56304f9db6bffd82d82746f0f4ea43b8f26
- 0xb86fa861d04737cb507e721eefbb066d26528fdb6017b1145c18d1223b93ee21
- 0x88e326a39b26e2c125306c9d3805d14398ace088bba9a2a0aa376b811cfb201a
- 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae