Evidence row 547753

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://asin402.com/api/lookup"
    ]
  ],
  "name": "ASIN402",
  "owner_address": "0x820bb89345d372288c77c65d70b6ca3db395c191",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x820bb89345d372288C77c65d70b6CA3dB395C191",
        "scheme": "exact"
      }
    ],
    "description": "Barcode to Amazon ASIN lookup (UPC, EAN, ISBN). Turn barcodes into Amazon listings: give 1-20 UPC, EAN, GTIN or ISBN-13 codes and get the matching ASINs with title, brand, image, link, current buy box / Amazon / lowest prices, sales rank and estimated monthly sales. For sourcing lists, supplier catalogs and scanned products. 11 marketplaces. From $0.005; codes with no match are not charged (404 if none match).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "code": "9780735211292"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "_meta": {
                "cached": false,
                "marketplace_domain_id": 1,
                "price_paid": "$0.005"
              },
              "affiliate_disclosure": "As an Amazon Associate I earn from qualifying purchases.",
              "codes_requested": 1,
              "marketplace": "us",
              "matches": [
                {
                  "amazon_is_seller": false,
                  "asin": "0735211299",
                  "brand": "Avery",
                  "category": "Books > Self-Help > Motivational",
                  "currency": "USD",
                  "image": "https://m.media-amazon.com/images/I/81ANaVZk5LL.jpg",
                  "marketplace": "us",
                  "matched_codes": [
                    "9780735211292"
                  ],
                  "monthly_sold_estimate": 600,
                  "new_offer_count": 7,
                  "price": {
                    "buy_box": 24.99,
                    "new_lowest": 23.99,
                    "used_lowest": 18.5
                  },
                  "rating": 4.6,
                  "review_count": 3840,
                  "sales_rank": 4210,
                  "title": "Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones",
                  "url": "https://www.amazon.com/dp/0735211299?tag=asin402-20"
                }
              ],
              "matches_found": 1
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "code": {
                      "description": "UPC, EAN, GTIN or ISBN-13; up to 20, comma-separated.",
                      "type": "string"
                    },
                    "domain": {
                      "description": "Amazon marketplace: us, uk, de, fr, jp, ca, it, es, in, mx, br. Default us.",
                      "type": "string"
                    },
                    "max_per_code": {
                      "description": "Max matching products per code, 1-5 (default 3). Some barcodes map to several listings.",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "code"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "_meta": {
                      "properties": {
                        "cached": {
                          "type": "boolean"
                        },
                        "marketplace_domain_id": {
                          "type": "integer"
                        },
                        "price_paid": {
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "affiliate_disclosure": {
                      "type": "string"
                    },
                    "codes_requested": {
                      "type": "integer"
                    },
                    "marketplace": {
                      "type": "string"
                    },
                    "matches": {
                      "items": {
                        "properties": {
                          "amazon_is_seller": {
                            "type": "boolean"
                          },
                          "asin": {
                            "type": "string"
                          },
                          "brand": {
                            "type": "string"
                          },
                          "category": {
                            "type": "string"
                          },
                          "currency": {
                            "type": "string"
                          },
                          "image": {
                            "type": "string"
                          },
                          "marketplace": {
                            "type": "string"
                          },
                          "matched_codes": {
                            "items": {
                              "type": "string"
                            },
                            "type": "array"
                          },
                          "monthly_sold_estimate": {
                            "type": "integer"
                          },
                          "new_offer_count": {
                            "type": "integer"
                          },
                          "price": {
                            "properties": {
                              "buy_box": {
                                "type": "number"
                              },
                              "new_lowest": {
                                "type": "number"
                              },
                              "used_lowest": {
                                "type": "number"
                              }
                            },
                            "type": "object"
                          },
                          "rating": {
                            "type": "number"
                          },
                          "review_count": {
                            "type": "integer"
                          },
                          "sales_rank": {
                            "type": "integer"
                          },
                          "title": {
                            "type": "string"
                          },
                          "url": {
                            "type": "string"
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "matches_found": {
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "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/v1793047148/bazaar-icons/9e69a0fc0922f515.png",
    "lastUpdated": "2026-10-27T15:34:48.277Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T15:34:48.069Z"
    },
    "resource": "https://asin402.com/api/lookup",
    "serviceName": "ASIN402",
    "tags": [
      "amazon",
      "ecommerce",
      "product-data",
      "price-history",
      "fba"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Barcode to Amazon ASIN lookup (UPC, EAN, ISBN). Turn barcodes into Amazon listings: give 1-20 UPC, EAN, GTIN or ISBN-13 codes and get the matching ASINs with title, brand, image, link, current buy box / Amazon / lowest prices, sales rank and estimated monthly sales. For sourcing lists, supplier catalogs and scanned products. 11 marketplaces. From $0.005; codes with no match are not charged (404 if none match)."
}

What the leaf hashes

{"body":"9510dc98cad9f11f3391f3354eea1c460ecd3638ce48c40e2a5994353bd3530a","id":547753,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133215398987,"prev":null,"subject":"x402_bazaar:https://asin402.com/api/lookup","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xeec194a32544ea87e140abbf137b8aa3cd3a898d78b498b722a5d0d4dd468e68
2. 0xfa6f5417905f346ce0bbecb0958d0179de6ec0e803cd0441370948652f704b30
3. 0xff1412b3e9eda7d9bd7e8ccd212466d459d761597c338819e87518c2fcee4383
4. 0xf80a5abb03dd57c849b8140053a6cbafdb118795aaacb6e480cb7154ae381422
5. 0x7336cb5bb80d1067d4a268c32e62d1b7775d7fe8c51e485f7e98b3ed563569ac
6. 0xd8a80540ebb8b4ace772d82866472b38e20441b6a9d3969ce170ce121808667e
7. 0x31462325abc45b8153ab2dfa44883c40a94b5f5ad5b3bc8db6da0495ee18b584
8. 0x2616d8d16efdb6db81b3e9e54834793ea932b31513690bc254f494a280fc4730
9. 0xea0703842e146f38a877f41b7b5d826da0e310267d25a82662764ad9b1a65994
10. 0x7822c4b652255b3b973e1d15069be7538a6a787558f35d1947b363ffe4129717
11. 0x1b4399bae757271424da8a4da03b907adf56af6574a865598cf68ad834ce7e01
12. 0xc0448a83784154aec794ac7a249e46b6f618529dfd246ef492240c5d9b62d921
13. 0xe0ddf3e1c8349b7fe55d4b2a6864486a77de3e3c0e371df44d69aeb837cfd79c
14. 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4