Evidence row 407630

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": "2026-10-27T01:45:08.532Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T22:19:31.538Z"
    },
    "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":"5fa2a1b1c2d3f2ebb61c9ff17b6aa04d645ad2f14d6f3bdd63ff8bf6eacc4f7b","id":407630,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080250541900,"prev":298736,"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. 0xb0893bd280f07e43e2deb24ea607395eb417841ac4c77d2363e9a6bfe65b2073
2. 0x35004102e3e8e0ad899f1fb4ef3de78689d21bb85cf1eda0127434b0711288bf
3. 0xdeb73a0154c975da2e03046e29d370bacafdc60d431d4811b255d4869329d9ec
4. 0x4461cb087f2113113c77d3d0d6fb157291f932b07a2bdd41df418363c0194ed4
5. 0xba51379b7b1280f74a34606cbcaf14d251b798eede81454b4acf8053c7615d67
6. 0xa5029728f00c6bf5f44acac5ced35d1298c6786b208811bec837d1927dc27833
7. 0x2057da8eee6111aa6773495889dc0a7dd9526ca55156eb0e673167a3e766b2f4
8. 0x1b1392bed97588b46298340e71e67246d15f2180307ac276ab2217a9dff22423
9. 0x89b6f53441c3d52ab46f487e6e1954a24ebe662ded738447e9b97b08153e5be2
10. 0x0c46dda2e15f065ead08a037290f5610f861a452e45aada336acce8131bbb604
11. 0x56e7aed5204b5b8c5add89512d1cb8ce0fb6387142ec4c11a09b2afad3fc0a97
12. 0x6413c10d59083704c26ae4eedf79ca24dbf9c92cad846aac6f2a11f02ab3b17b
13. 0x4c82d20074b9d7d77e728b0250a2c662412d8d0f7eccff2d8100bfcc4434597f
14. 0x98c6ed3e7b5bb7f1757a8660af410226a11dd563bf83010040c2ce059ab45e54
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4