← The evidence ledger
Evidence row 71597
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://bess-x402.onrender.com/v1/research/books
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9de2565d20deaa21dd6594b7572b34d78d9db23fefcd3070b05686e005198f60
- Leaf
- 0x918c82964e294bf4d71394f56a069261d322963199270017a4ca8837203c5f70
What was observed
{
"endpoints": [
[
"x402",
"https://bess-x402.onrender.com/v1/research/books"
]
],
"name": "Book Search",
"owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
"scheme": "exact"
}
],
"description": "Find books by title, author or ISBN (Open Library): authors, first publication year, editions, pages, ISBNs, subjects, publishers, languages, rating and cover image. Use for book lookups, reading lists or metadata.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"limit": 3,
"q": "dune frank herbert"
},
"type": "http"
},
"output": {
"example": {
"books": [
{
"authors": [
"Frank Herbert"
],
"cover": "https://covers.openlibrary.org/b/id/11481354-L.jpg",
"editions": 155,
"first_published": 1965,
"isbn": [
"9780340839935",
"9782266320481"
],
"languages": [
"heb",
"dut"
],
"pages": 608,
"publishers": [
"Berkley",
"Berkley Books"
],
"rating": 4.3,
"subjects": [
"Dune (Imaginary place)",
"Fiction"
],
"title": "Dune",
"url": "https://openlibrary.org/works/OL893414W"
},
{
"authors": [
"Frank Herbert"
],
"cover": "https://covers.openlibrary.org/b/id/980253-L.jpg",
"editions": 101,
"first_published": 1969,
"isbn": [
"8418037679",
"9788466372015"
],
"languages": [
"spa",
"pol"
],
"pages": 279,
"publishers": [
"Orion Publishing Group, Limited",
"Putnam"
],
"rating": 3.94,
"subjects": [
"American Science fiction",
"Dune (Imaginary place)"
],
"title": "Dune Messiah",
"url": "https://openlibrary.org/works/OL893461W"
}
],
"count": 3,
"query": "dune frank herbert",
"source": "Open Library",
"total": 121
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
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"type": "integer"
},
"q": {
"description": "Title, author or ISBN",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
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}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-23T12:51:56.854Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-23T12:51:56.495Z"
},
"resource": "https://bess-x402.onrender.com/v1/research/books",
"serviceName": "Book Search",
"tags": [
"books",
"isbn",
"library",
"metadata"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Find books by title, author or ISBN (Open Library): authors, first publication year, editions, pages, ISBNs, subjects, publishers, languages, rating and cover image. Use for book lookups, reading lists or metadata."
}What the leaf hashes
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Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
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- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae