← The evidence ledger
Evidence row 414646
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-18-181
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9b4cc01c432768a5152bbb2834e7a8bc19f8c89555c5506f90a6c725be61b2e4
- Leaf
- 0x85b568f2fe8341de3b44dfdec57763928d3414d4332441c4a0e8397c2427867c
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-18-181"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-18-181",
"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": "Question bank coverage — Two-measure correlation + Secondary-measure weighted mean: Two-measure correlation + Secondary-measure weighted mean for supplied question bank coverage records (item_count, objective_count). 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": "item_count",
"rows": [
{
"course_group": "group-a",
"date": "2026-10-01",
"item_count": 10,
"objective_count": 1,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"item_count": 20,
"objective_count": 2,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"item_count": 15,
"objective_count": 3,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"item_count": 30,
"objective_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-18-181"
},
"sku": "assistant-ib26-education-18-181",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"field": {
"default": "item_count",
"enum": [
"item_count",
"objective_count"
],
"type": "string"
},
"rows": {
"default": [
{
"course_group": "group-a",
"date": "2026-10-01",
"item_count": 10,
"objective_count": 1,
"row_id": "row-1"
},
{
"course_group": "group-b",
"date": "2026-10-02",
"item_count": 20,
"objective_count": 2,
"row_id": "row-2"
},
{
"course_group": "group-a",
"date": "2026-10-03",
"item_count": 15,
"objective_count": 3,
"row_id": "row-3"
},
{
"course_group": "group-b",
"date": "2026-10-04",
"item_count": 30,
"objective_count": 4,
"row_id": "row-4"
}
],
"items": {
"additionalProperties": false,
"properties": {
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"item_count": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"objective_count": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"row_id": {
"default": "",
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"row_id",
"course_group",
"date",
"item_count",
"objective_count"
],
"type": "object"
},
"maxItems": 200,
"minItems": 1,
"type": "array"
}
},
"required": [
"rows",
"field"
],
"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": "2026-10-27T05:15:21.608Z",
"quality": {
"lastCalledAt": "2026-10-27T05:15:21.608Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-18-181",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Question bank coverage — Two-measure correlation + Secondary-measure weighted mean: Two-measure correlation + Secondary-measure weighted mean for supplied question bank coverage records (item_count, objective_count). 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":"9b4cc01c432768a5152bbb2834e7a8bc19f8c89555c5506f90a6c725be61b2e4","id":414646,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080774006666,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-18-181","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).
- 0x85b5a327f2b2ebc183cf245ccf568f53c097b405194861235707c097dbb79960
- 0x374a7bc7ae1133ab2edc02928a0c474888028cd2e8cfa7c969648a187c0b4fbb
- 0x865e74a4006fb8c2f0455b9e28c7b33de5bc0b8c668079fcc8abaac71040291b
- 0x0892ecd873429075045d6684e97081be7388887fe538f4ebd2927b804463a08c
- 0xb4d7c09675b8ad7f177b3d80f9ee10971c2a5c2ffbaafbf0fc61bc24cd7f715b
- 0xfd5945aaddc3627520a2eb5448a9b3f9fce49ebaa9c77e18b03e2fcc328d5bf7
- 0x71f2684a52719757dbc2f535f94e8951ef1713e56e8c605c229decdb33488ce2
- 0x555142a58cdf1b0602ca37017eb5fc2abbdef6beaf0fe6af5ece5a5d663c0b0c
- 0xd283a28d6e852245fdfe8b9ec866401bb4ddfee62d5559e68ef4586070156661
- 0x96a0da13299187f33c6402d51c70a67e16424b1c2efecb62b5deff3accdc84f9
- 0x94b5117661526893571c5099bb213b21f54068dc9f381d688b9be7c593a99d91
- 0xe5ce8ac1ba4d6152605e0a032058cac5906d85f82e3fda1ad44852337b713b17
- 0x07d414626f116f3edc6ddb34183ed02538c3a805fec6db00f9d764f8fd595d04
- 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
- 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
- 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
- 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
- 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
- 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4