addrbookFor publishers
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Evidence row 119413

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/books/isbn/:isbn
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
bc6d09565b431882557d2a08a78340edccf95f7aa04b3d842cac64a9ae4d2713
Leaf
0x82d1bd4b38f02455e2093b1daf077f26453b39b49e89351a33c0f9f3b114d66c

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/books/isbn/:isbn"
    ]
  ],
  "name": "Saylor Innovations Books",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:books:isbn",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:books:isbn",
          "reference": "2uDEUQJhLaKNfqNqnjBtjX1d689mFDW9bjt1UFpBU1LR",
          "session": "eyJhcnRpY2xlSWQiOiJib29rczppc2JuIiwicmVmZXJlbmNlIjoiMnVERVVRSmhMYUtOZnFOcW5qQnRqWDFkNjg5bUZEVzlianQxVUZwQlUxTFIiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MTgwODYxNTE4NH0.ZZU5G9dGTeZeEfmXdyZfnq0LIkYppgucDQPi5R1mN-A"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "ISBN-10 and ISBN-13 lookup - title, authors, publisher, publish date, pages, subjects and cover image",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "isbn": "9780441013593"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "authors": [
                "Frank Herbert"
              ],
              "cover": "https://covers.openlibrary.org/b/id/12345-L.jpg",
              "description": "Set on the desert planet Arrakis...",
              "found": true,
              "isbn": "9780441013593",
              "pages": 528,
              "published": "2005",
              "publishers": [
                "Ace Books"
              ],
              "subjects": [
                "Science fiction"
              ],
              "title": "Dune"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/books/isbn/:isbn",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "isbn": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "isbn"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "pathParams"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "authors": {
                      "type": "array"
                    },
                    "found": {
                      "type": "boolean"
                    },
                    "title": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "found"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-12T12:34:55.235Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-12T12:34:54.562Z"
    },
    "resource": "https://saylorinnovations.com/api/books/isbn/:isbn",
    "serviceName": "Saylor Innovations Books",
    "tags": [
      "books",
      "isbn",
      "open-library",
      "literature"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ISBN-10 and ISBN-13 lookup - title, authors, publisher, publish date, pages, subjects and cover image"
}

What the leaf hashes

{"body":"bc6d09565b431882557d2a08a78340edccf95f7aa04b3d842cac64a9ae4d2713","id":119413,"kind":"listing","method":"baseline/1","observed_us":1793025615316651,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/books/isbn/:isbn","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).

  1. 0x82d1e2616e08db7023b5ce9ea7b7ac8c74352ccee90349c592a61cf94fcc700e
  2. 0xd2caf1c1effcf009a358f2a3d5f6ab82d0e485b2b87c2a7e9f5d9aea6b0f6295
  3. 0x0ed1532a65ee26091dee459d60263e6663938110781e427503a319dbb08b70ad
  4. 0xbf03c65ed6b5fe7c49cad9f5f69f6e5e97329849be70eb4d2c215e7f89675544
  5. 0x293d96d9bae7feb38f22348be27f3dd1c63413995273aae894f50f58f6dda46b
  6. 0x2313b84e6681ee9ece87ab20d8e2286475ef813d858c5c914cdacdd7450200d8
  7. 0x2db53e0fa28953e7d8d6d5a7f0c573d74e707c2bb3938c0f66c51aa4f280eb33
  8. 0xfd981b6d893ee1bda662370d6dccec1fcbcda66ad837b83b9e410bc0c1283a49
  9. 0xe381981faf4090d2a270681916d4ac58edcc0a97d757c7728ec01890e28d7918
  10. 0x68b9c13007eacffd2dc146b099ac237e3cce9c995bb23c895d088539fb9a0df0
  11. 0xc99774cfa2126cb7b4c49d6b3fd2510795689e2dec7886bdb1a009218327ef2e
  12. 0x08155d70132f82e370214fc5b72194dfa6f5e57670b7bcf74776e8418302897e
  13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
  14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
  15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
  16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
  17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON