← The evidence ledger
Evidence row 92219
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-20-124
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 3d4f3c5d6afe93aabb42510102c49d634c3728ba88fd16a5587b42b6738c9ce6
- Leaf
- 0xb689b8f0d3d3f4993cecc8408553d5464fa4508caa2e3f8aa0108f6df1c522be
What was observed
{
"endpoints": [
[
"x402",
"https://market.datapackvibe.com/x402/assistant-ib26-education-20-124"
]
],
"name": "market.datapackvibe.com/x402/assistant-ib26-education-20-124",
"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": "Research grant spending — Numeric row ordering + Explicit missing-value fill: Numeric row ordering + Explicit missing-value fill for supplied research grant spending records (budget_amount, spend_amount). 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": "budget_amount",
"method": "median",
"rows": [
{
"budget_amount": 10,
"course_group": "group-a",
"date": "2026-10-01",
"row_id": "row-1",
"spend_amount": 1
},
{
"budget_amount": 20,
"course_group": "group-b",
"date": "2026-10-02",
"row_id": "row-2",
"spend_amount": 2
},
{
"budget_amount": 15,
"course_group": "group-a",
"date": "2026-10-03",
"row_id": "row-3",
"spend_amount": 3
},
{
"budget_amount": 30,
"course_group": "group-b",
"date": "2026-10-04",
"row_id": "row-4",
"spend_amount": 4
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"files": [],
"order_id": "ord_example",
"result": {
"completed": true,
"workflow": "ib26-education-20-124"
},
"sku": "assistant-ib26-education-20-124",
"status": "delivered"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"field": {
"default": "budget_amount",
"enum": [
"budget_amount",
"spend_amount"
],
"type": "string"
},
"method": {
"default": "median",
"enum": [
"zero",
"mean",
"median"
],
"type": "string"
},
"rows": {
"default": [
{
"budget_amount": 10,
"course_group": "group-a",
"date": "2026-10-01",
"row_id": "row-1",
"spend_amount": 1
},
{
"budget_amount": 20,
"course_group": "group-b",
"date": "2026-10-02",
"row_id": "row-2",
"spend_amount": 2
},
{
"budget_amount": 15,
"course_group": "group-a",
"date": "2026-10-03",
"row_id": "row-3",
"spend_amount": 3
},
{
"budget_amount": 30,
"course_group": "group-b",
"date": "2026-10-04",
"row_id": "row-4",
"spend_amount": 4
}
],
"items": {
"additionalProperties": false,
"properties": {
"budget_amount": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
},
"course_group": {
"default": "",
"maxLength": 80,
"type": "string"
},
"date": {
"default": "",
"maxLength": 10,
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"row_id": {
"default": "",
"maxLength": 80,
"minLength": 1,
"type": "string"
},
"spend_amount": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": [
"number",
"null"
]
}
},
"required": [
"row_id",
"course_group",
"date",
"budget_amount",
"spend_amount"
],
"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": "2026-10-25T02:52:18.746Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-25T02:52:18.551Z"
},
"resource": "https://market.datapackvibe.com/x402/assistant-ib26-education-20-124",
"tags": [
"ai",
"learning",
"workflow"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Research grant spending — Numeric row ordering + Explicit missing-value fill: Numeric row ordering + Explicit missing-value fill for supplied research grant spending records (budget_amount, spend_amount). 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":"3d4f3c5d6afe93aabb42510102c49d634c3728ba88fd16a5587b42b6738c9ce6","id":92219,"kind":"listing","method":"baseline/1","observed_us":1793025535870395,"prev":null,"subject":"x402_bazaar:https://market.datapackvibe.com/x402/assistant-ib26-education-20-124","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).
- 0xb689c830a1c6974a84ad548e45dcc1af2179b3b802d64f378f3d64d9bec32658
- 0x4203377865fbf81a40e14d2e7b81fd38116e07050717295f07b6662b00f0cc61
- 0x562e63fb408c3e696fb399f63f7fc93398733d3a9aceca5cfc50a2f95d55166a
- 0x01f10aef3ca86ec407946fefbead3a4579d4742f6e5df656094128357bbc53a5
- 0x0f62e0c0fd9999eef1c752ec66bc8f0f0b2b058a6f6f3d354ae3dab6057d069b
- 0xeca4b0a56ecab245f6f9512e3c2087b05711902c2f9b09ee2ec0df20d0131e52
- 0x13be281c2883aa9a6e6508f3a8404ad54767b1c49ba187289b7e5b7f8f0256f3
- 0x1b87fd515e343a5ff0fd1fe1dc078fbe0b4c23e8bf429df75492b7812db92b95
- 0x0585de311ce0311439459893eedb4cc55ed3c848458b8746571e30f6aefef6be
- 0x8ad504c3df28b2abf4893577952a0655be9d4e70ea34ee4e1147dc0aa281fdd2
- 0xfa91c460bb9b05b6890b46e5326a89c9e487b6419bd4d84337c05040222a2e6c
- 0x17930d484cab3f6850715eb0b77dd189c3c06f975cf9def12285fde3eb9b4234
- 0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
- 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
- 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae