← The evidence ledger
Evidence row 91442
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-12-166
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 4ec2194c5c9f0d9e75160d66510e46252759c1c5b6ccfcb64ff365f8804de2ab
- Leaf
- 0x87e48648ca56220c8c31a1e461c413450def4dbb2ad79e56a1ccdcbe8fe25973
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-12-166"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-12-166",
"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 — Base-100 series + Secondary-measure weighted mean: Base-100 series + Secondary-measure weighted mean for supplied learning resource usage records (access_count, resource_minutes). 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": {
"base_index": 0,
"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-12-166"
},
"sku": "assistant-ib26-education-12-166",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"base_index": {
"default": 0,
"maximum": 199,
"minimum": 0,
"type": "integer"
},
"field": {
"default": "access_count",
"enum": [
"access_count",
"resource_minutes"
],
"type": "string"
},
"rows": {
"default": [
{
"access_count": 10,
"course_group": "group-a",
"date": "2026-10-01",
"resource_minutes": 1,
"row_id": "row-1"
},
{
"access_count": 20,
"course_group": "group-b",
"date": "2026-10-02",
"resource_minutes": 2,
"row_id": "row-2"
},
{
"access_count": 15,
"course_group": "group-a",
"date": "2026-10-03",
"resource_minutes": 3,
"row_id": "row-3"
},
{
"access_count": 30,
"course_group": "group-b",
"date": "2026-10-04",
"resource_minutes": 4,
"row_id": "row-4"
}
],
"items": {
"additionalProperties": false,
"properties": {
"access_count": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"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",
"base_index"
],
"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": "2026-10-25T21:11:48.474Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-25T21:11:48.267Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-12-166",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Learning resource usage — Base-100 series + Secondary-measure weighted mean: Base-100 series + Secondary-measure weighted mean for supplied learning resource usage records (access_count, resource_minutes). 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":"4ec2194c5c9f0d9e75160d66510e46252759c1c5b6ccfcb64ff365f8804de2ab","id":91442,"kind":"listing","method":"baseline/1","observed_us":1793025527132445,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-12-166","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).
- 0x87e49c010140d9e3015cd5895c694246239a93b1c8f5e642475de1f91fa8db18
- 0x05e18adb4d8383801f7d5c24ec49ffdab3a2c40c794f0f23b24df029ca3fb93e
- 0x99c2a4889ba733cae57ea4dea1280d45990c5bcc9c4b21e4564efd370f8c35db
- 0x77689dfff5f17af6a38768ef797171d7d7b083815a67728b8f779f53241b790b
- 0x0b2d13f003184b75c6b4809545f48cf2ebda473c7e776d9895c06f60efc9f21a
- 0x9d89b56150679d359ac385180d0808143b9a997e144e0ecce48e60a3887cba28
- 0xcb6a1ea4f36d2ece0c930512f04ceebdf90409c3a89b8fc01e1d45c901abde2d
- 0x1b766ae932f7a8945ef600313390005013f6fa1ccc06eae822bfd8b178d8b96c
- 0xbaa1ce1c5cbf1b3300a4244927f40a028bd6b41ac39500640cecb2b188c7a0dd
- 0x07754f5d18ae94a58145ba055e77f9866d011c666e0e742dac34d5f46dce7f76
- 0xab0c5c1fde083e427b8955a771d679773808751fc069bed2944e88e84fcb655e
- 0x099dd43573993f2a1bea674129b7ed050429a0ac76c3bfda8aaf82a3af126469
- 0x49d11be052a4c069b10250aaba214f566b3f2e5aaa7a98e82ccc6a71c0e801a0
- 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
- 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae