← The evidence ledger
Evidence row 92468
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-22-187
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7107ac375fda5b4fed3cd520c06b4f8a5ec0e7690e6ae5406073e9cdf3625123
- Leaf
- 0x961d39f2d253be0d696a1298596f863ade8b1d17b5eb177796d92138db4b8fbb
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-22-187"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-22-187",
"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": "Data collection completeness — Secondary-measure weighted mean + Explicit missing-value fill: Secondary-measure weighted mean + Explicit missing-value fill for supplied data collection completeness records (observed_values, expected_values). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"field": "observed_values",
"method": "median",
"rows": [
{
"course_group": "group-a",
"date": "2026-10-01",
"expected_values": 1,
"observed_values": 10,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"expected_values": 2,
"observed_values": 20,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"expected_values": 3,
"observed_values": 15,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"expected_values": 4,
"observed_values": 30,
"row_id": "row-4"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"files": [],
"order_id": "ord_example",
"result": {
"completed": true,
"workflow": "ib26-education-22-187"
},
"sku": "assistant-ib26-education-22-187",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"field": {
"default": "observed_values",
"enum": [
"observed_values",
"expected_values"
],
"type": "string"
},
"method": {
"default": "median",
"enum": [
"zero",
"mean",
"median"
],
"type": "string"
},
"rows": {
"default": [
{
"course_group": "group-a",
"date": "2026-10-01",
"expected_values": 1,
"observed_values": 10,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"expected_values": 2,
"observed_values": 20,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"expected_values": 3,
"observed_values": 15,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"expected_values": 4,
"observed_values": 30,
"row_id": "row-4"
}
],
"items": {
"additionalProperties": false,
"properties": {
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"expected_values": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"observed_values": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"row_id": {
"default": "",
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"row_id",
"course_group",
"date",
"observed_values",
"expected_values"
],
"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": "2026-10-25T13:58:13.836Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-25T13:58:13.635Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-22-187",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Data collection completeness — Secondary-measure weighted mean + Explicit missing-value fill: Secondary-measure weighted mean + Explicit missing-value fill for supplied data collection completeness records (observed_values, expected_values). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows."
}What the leaf hashes
{"body":"7107ac375fda5b4fed3cd520c06b4f8a5ec0e7690e6ae5406073e9cdf3625123","id":92468,"kind":"listing","method":"baseline/1","observed_us":1793025536247846,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-22-187","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).
- 0x961d15e0a7b5c5b4e9cc5e6be393be185c959a2163e3fe9cac99a4d9a9fe2350
- 0x53b6097292bf6a40941c9e1ddf0f43d47ec83cfa0cb1b4854a5b03af77ea650d
- 0x5e9e76e4edd199e10ff8568655a0e5d88f94436ccf3cf10e4240dc0932353972
- 0x3c04caf58fca7c90f26e2227c37f80638582473478d8641b3753e15ff139b78c
- 0x62065b5f6700f20483c801f726b2bfe68009b06362da70fd938040e6b1c77914
- 0xcda13fd3fffa2c1166840b5edb1c3593d0e8af83265fd67a30665a31f5075e2b
- 0x348c3f0f8796b24350a02af5e6f88f1be6a7b12dbec8819e4eb428b0f85af1af
- 0xadef6b90537a324331aa9be785dce9a9ab0b8d570c1068440576bf626cd824a1
- 0xc5c915ab3c4c0606a82674c003b2a991c2b4007379fe8bba91c240c84aac99c5
- 0x3c0435b3d7eeeb3f37038b9e2ec10e64aa115ae1e408e3518ccf5e66098e8914
- 0x410382a743218ee37cce3087a0bdbcb3f5a456fc78a975bb16e175d9ceedd913
- 0x12169ac86722058ecf46a1b83c56e8b21899ab108a12c5a4429da74c5d191294
- 0xb314422bc93e7f1c0b706c67f5fff96c5ddf74934bb2fe8ab6291ae016907e37
- 0x49062da782c4f73855ddd5fdd51840749f928b5f17d1ce75ac50f2d829104e72
- 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae