← The evidence ledger
Evidence row 211487
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-12-202
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8bacc7175477b60fe8678ee3acddef0e0af59689cd43227c39ea92b53d8d6d37
- Leaf
- 0x082fded8434576e2b76699d3707b78726277260a391de2278ee6d5c39a69f619
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-12-202"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-12-202",
"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": "Learning resource usage — Record quality audit + String normalisation + Equal-width histogram: Record quality audit + String normalisation + Equal-width histogram for supplied learning resource usage records (access_count, resource_minutes). 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": {
"bins": 5,
"field": "access_count",
"rows": [
{
"access_count": 10,
"course_group": "group-a",
"date": "2026-10-01",
"resource_minutes": 1,
"row_id": "row-1"
},
{
"access_count": 20,
"course_group": "group-b",
"date": "2026-10-02",
"resource_minutes": 2,
"row_id": "row-2"
},
{
"access_count": 15,
"course_group": "group-a",
"date": "2026-10-03",
"resource_minutes": 3,
"row_id": "row-3"
},
{
"access_count": 30,
"course_group": "group-b",
"date": "2026-10-04",
"resource_minutes": 4,
"row_id": "row-4"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"files": [],
"order_id": "ord_example",
"result": {
"completed": true,
"workflow": "ib26-education-12-202"
},
"sku": "assistant-ib26-education-12-202",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"bins": {
"default": 5,
"maximum": 30,
"minimum": 1,
"type": "integer"
},
"field": {
"default": "access_count",
"enum": [
"access_count",
"resource_minutes"
],
"type": "string"
},
"rows": {
"default": [
{
"access_count": 10,
"course_group": "group-a",
"date": "2026-10-01",
"resource_minutes": 1,
"row_id": "row-1"
},
{
"access_count": 20,
"course_group": "group-b",
"date": "2026-10-02",
"resource_minutes": 2,
"row_id": "row-2"
},
{
"access_count": 15,
"course_group": "group-a",
"date": "2026-10-03",
"resource_minutes": 3,
"row_id": "row-3"
},
{
"access_count": 30,
"course_group": "group-b",
"date": "2026-10-04",
"resource_minutes": 4,
"row_id": "row-4"
}
],
"items": {
"additionalProperties": false,
"properties": {
"access_count": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"resource_minutes": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"row_id": {
"default": "",
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"row_id",
"course_group",
"date",
"access_count",
"resource_minutes"
],
"type": "object"
},
"maxItems": 200,
"minItems": 1,
"type": "array"
}
},
"required": [
"rows",
"field",
"bins"
],
"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": "2026-10-26T09:42:56.234Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-26T09:42:56.018Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-12-202",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Learning resource usage — Record quality audit + String normalisation + Equal-width histogram: Record quality audit + String normalisation + Equal-width histogram for supplied learning resource usage records (access_count, resource_minutes). 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":"8bacc7175477b60fe8678ee3acddef0e0af59689cd43227c39ea92b53d8d6d37","id":211487,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026464799126,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-12-202","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).
- 0x083031b9a3ab001e632de23ffd21804bcb99b1cd740bd0ac6f487892ebc86ad5
- 0xcc7ed7ceef2c7dba160f1f396118530e4590766f77425b595f0edd29ecf51314
- 0xf5da8d6a72307439c0931ff44ede92bbd75f3caa5722b958b2579e0a73ea9319
- 0xa50cac289fefaaf4b44f5b691a24233ed1779427ec05586c055de56ea7993817
- 0xda49069ec39d97c0b694a85cf8dd9ecd87ff733a305967e771ad8961fd468322
- 0x37056156c9c77a4c4576748722b7625f9a898e8396e2bb8efd568e4ea05c73cd
- 0xd36fdf454717c0743478bdf980117945a51a363c103c3b89317d27fd52b1b77b
- 0x960b6af45a51a246581332c253046d53f8e1cf7a3efc1e31d2609de8ac177c8d
- 0x17487bdd8a24c59ee9743f1f5e4fe998668e6e05e30a4719999b9bec35cb8955
- 0x8c7a98ae2cb4ce9806641729f82b9b19104c8b000de3727bbd7eb046927d1d21
- 0x3585060104222ad1aae3396450719e555d4d013fa2b3a7b43777a1722ca9ce22
- 0x6003e14d04cde1d24b195ac15b568dd483e04047e0f2ff64d9632a51a8f7123d
- 0xe5a836cf25a8dfc72c9e3b6a69a7561a1f61f50f9cf36707d36f6e926aa15dec
- 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
- 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae