Evidence row 526644

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://asin402.com/api/deal-check"
    ]
  ],
  "name": "ASIN402",
  "owner_address": "0x820bb89345d372288c77c65d70b6ca3db395c191",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x820bb89345d372288C77c65d70b6CA3dB395C191",
        "scheme": "exact"
      }
    ],
    "description": "Is this Amazon price a good deal? Buy now or wait. Price check against history for any ASIN: compares today's price with its 30/90/180-day averages and typical 180-day range (fake-low outlier offers filtered out) and returns a verdict (buy_now, fair_price, wait or verify_offer) with a one-line reason. Use before buying or recommending a product. Amazon price tracker / price drop check. 11 marketplaces. Free sample: /api/sample/deal-check",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "asin": "0735211299"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asin": "0735211299",
              "avg_180d": 29.5,
              "avg_30d": 26.5,
              "avg_90d": 28.99,
              "currency": "USD",
              "current_price": 24.99,
              "data_as_of": "2026-10-26T18:40:00.000Z",
              "marketplace": "us",
              "median_180d": 29.5,
              "percent_vs_90d_avg": -13.8,
              "price_basis": "buy_box",
              "reason": "Price is at or near the low end of its usual range.",
              "title": "Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones",
              "typical_high_180d": 29.5,
              "typical_low_180d": 25.5,
              "verdict": "buy_now"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "asin": {
                      "description": "Amazon ASIN, 10 characters (books: ISBN-10)",
                      "type": "string"
                    },
                    "domain": {
                      "description": "Marketplace: us, uk, de, fr, jp, ca, it, es, in, mx, br. Default us",
                      "type": "string"
                    }
                  },
                  "required": [
                    "asin"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asin": {
                      "type": "string"
                    },
                    "avg_180d": {
                      "type": "number"
                    },
                    "avg_30d": {
                      "type": "number"
                    },
                    "avg_90d": {
                      "type": "number"
                    },
                    "currency": {
                      "type": "string"
                    },
                    "current_price": {
                      "type": "number"
                    },
                    "data_as_of": {
                      "type": "string"
                    },
                    "marketplace": {
                      "type": "string"
                    },
                    "median_180d": {
                      "type": "number"
                    },
                    "percent_vs_90d_avg": {
                      "type": "number"
                    },
                    "price_basis": {
                      "type": "string"
                    },
                    "reason": {
                      "type": "string"
                    },
                    "title": {
                      "type": "string"
                    },
                    "typical_high_180d": {
                      "type": "number"
                    },
                    "typical_low_180d": {
                      "type": "number"
                    },
                    "verdict": {
                      "type": "string"
                    }
                  },
                  "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": "2026-10-27T14:41:23.717Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T08:30:15.682Z"
    },
    "resource": "https://asin402.com/api/deal-check",
    "serviceName": "ASIN402",
    "tags": [
      "amazon",
      "ecommerce",
      "product-data",
      "price-history",
      "fba"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Is this Amazon price a good deal? Buy now or wait. Price check against history for any ASIN: compares today's price with its 30/90/180-day averages and typical 180-day range (fake-low outlier offers filtered out) and returns a verdict (buy_now, fair_price, wait or verify_offer) with a one-line reason. Use before buying or recommending a product. Amazon price tracker / price drop check. 11 marketplaces. Free sample: /api/sample/deal-check"
}

What the leaf hashes

{"body":"c3cc5d8464ed4627729eef939998e45933ac248a5db8618d2de7636b365c9951","id":526644,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124789921491,"prev":452349,"subject":"x402_bazaar:https://asin402.com/api/deal-check","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. 0x170a849317610066235a7d8257fb9f757cbc87f105e41c85dce7362bd62a9518
2. 0xd45d4ce73db8ca35e41a8c07f7d7a423818026289f863d0ca0921162bc7fb292
3. 0xcdcbb2426159209dbe77906080bc9ffd0e9bec1fae976855d83f79acea8b6b1b
4. 0x78018d9ad02060aa2b4ee492af3569fb7a087463a66ecb0a369f981a3546a9a0
5. 0x49bda8528cfc59955656e618c004640b79b49ac98ff09774e1d44780f5fe34e7
6. 0xbed4273443425c4938f559a3ccdecf45f36c9ac64a12e69d4cf753c87ff836a0
7. 0x52fe9947e45d8670e801a7891d54ffbf1c8b85e77d50a1aa0179da1b3a8ed29b
8. 0xde2be648131afb4aebd6d9fa44233dfecd5c35929e32cb955682a5f7bdb8648f
9. 0x82c880c9aef6d10fc2c00e382627e9c782d7eac1cc14d677293ec7ecd4e71e6f
10. 0xdb7245f9298926c48a065defbaa157febf69634706cf59e907767fc1334235cc
11. 0x55acee356f0b717dd0920b0cde9e99b43bd0a0b1161a35ac6c315aa50f2d66f6
12. 0x62c7e7967ec467dcf70ca9a9f01831f05b5b4a07c07491cc03340b1479c7ea31
13. 0xfae7ed2d06f4d6ced86c104b6381c26d795f82be10e6314b53b0524bd75a292f
14. 0x52c5141da0cbee106a30396ee7d1360fd22f55084aca2ca436c8007892775670
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4