Evidence row 526643

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://asin402.com/api/fba-profit"
    ]
  ],
  "name": "ASIN402",
  "owner_address": "0x820bb89345d372288c77c65d70b6ca3db395c191",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x820bb89345d372288C77c65d70b6CA3dB395C191",
        "scheme": "exact"
      }
    ],
    "description": "Amazon FBA profit calculator by ASIN. Should I sell this on Amazon FBA? Give an ASIN and your unit cost: returns referral fee, FBA fulfillment fee, net profit, margin, ROI, break-even cost and the maximum landed cost for a 30% ROI (the number to negotiate with suppliers). Uses the live buy box price. For Amazon sellers, wholesale and online arbitrage. Free sample: /api/sample/fba-profit",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "asin": "0735211299",
              "cost": 4.5,
              "shipping": 0.8
            },
            "type": "http"
          },
          "output": {
            "example": {
              "amazon_is_seller": false,
              "asin": "0735211299",
              "break_even_landed_cost": 16.12,
              "currency": "USD",
              "data_as_of": "2026-10-26T18:40:00.000Z",
              "fba_fee_source": "marketplace_data",
              "fba_fulfillment_fee": 5.12,
              "landed_cost": 5.3,
              "margin_pct": 43.3,
              "marketplace": "us",
              "max_landed_cost_for_30pct_roi": 12.4,
              "net_profit": 10.82,
              "note": "Excludes storage fees, inbound placement fees, returns and taxes.",
              "referral_fee": 3.75,
              "referral_fee_pct": 15,
              "roi_pct": 204.2,
              "sell_price": 24.99,
              "title": "Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones"
            },
            "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"
                    },
                    "cost": {
                      "description": "Your unit cost of goods",
                      "type": "number"
                    },
                    "domain": {
                      "description": "Marketplace: us, uk, de, fr, jp, ca, it, es, in, mx, br. Default us",
                      "type": "string"
                    },
                    "price": {
                      "description": "Override the sell price (defaults to current buy box)",
                      "type": "number"
                    },
                    "shipping": {
                      "description": "Inbound shipping per unit",
                      "type": "number"
                    }
                  },
                  "required": [
                    "asin"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "amazon_is_seller": {
                      "type": "boolean"
                    },
                    "asin": {
                      "type": "string"
                    },
                    "break_even_landed_cost": {
                      "type": "number"
                    },
                    "currency": {
                      "type": "string"
                    },
                    "data_as_of": {
                      "type": "string"
                    },
                    "fba_fee_source": {
                      "type": "string"
                    },
                    "fba_fulfillment_fee": {
                      "type": "number"
                    },
                    "landed_cost": {
                      "type": "number"
                    },
                    "margin_pct": {
                      "type": "number"
                    },
                    "marketplace": {
                      "type": "string"
                    },
                    "max_landed_cost_for_30pct_roi": {
                      "type": "number"
                    },
                    "net_profit": {
                      "type": "number"
                    },
                    "note": {
                      "type": "string"
                    },
                    "referral_fee": {
                      "type": "number"
                    },
                    "referral_fee_pct": {
                      "type": "integer"
                    },
                    "roi_pct": {
                      "type": "number"
                    },
                    "sell_price": {
                      "type": "number"
                    },
                    "title": {
                      "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": "2026-10-27T14:41:28.801Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T08:30:30.514Z"
    },
    "resource": "https://asin402.com/api/fba-profit",
    "serviceName": "ASIN402",
    "tags": [
      "amazon",
      "ecommerce",
      "product-data",
      "price-history",
      "fba"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Amazon FBA profit calculator by ASIN. Should I sell this on Amazon FBA? Give an ASIN and your unit cost: returns referral fee, FBA fulfillment fee, net profit, margin, ROI, break-even cost and the maximum landed cost for a 30% ROI (the number to negotiate with suppliers). Uses the live buy box price. For Amazon sellers, wholesale and online arbitrage. Free sample: /api/sample/fba-profit"
}

What the leaf hashes

{"body":"fbbcb6bf49b82b6df30af395513098fe7ee2225fa63ff4d740f31660df566f64","id":526643,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124789916113,"prev":452348,"subject":"x402_bazaar:https://asin402.com/api/fba-profit","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. 0xaa8944d4a126c7b19adf80239ec0c123ab548a73986114e46291e742ec700b3c
2. 0xd2d9493cce37417f059dd4cc3335dafe15feef7a24fc87397a7051f0de36c165
3. 0x885e75ba1126aac72083a2aee4b6e551211bea3a2fe0d03333b727dc6e029670
4. 0xa38ca84447085673234693888e28ee83dbee92bead2cf5159c6dac7069e69c3e
5. 0xa4afbb205d798b0f44be40d4f1718b550dc350930a3e7c4b2dd4a56bc032aae8
6. 0xc45c6835d7cf98f4a940f576e327910ae453f280dd03851ceec173163115444a
7. 0xac59d14fb80022ad683a9c2efc54a6855492a38c4347c22528d8c7ffc4e1d7fd
8. 0x7a231f59d2dc8fb8bc4c7f7ca1769c06f5af64a0c4938cc636ef2606151fb47e
9. 0xdf52ed1ce8a310a1709190b7068e7f1460ca9071d87c2d06c3befbfccfa80a4c
10. 0x85f3e9344adf71e33ea4f162d6e6702e9ba77aab979e7b191943a496f56f7cb9
11. 0x5c27d95be506ce4f10a1351119cc83ab56836cc66985a189f89638e2256fa7a5
12. 0x209c5ec9dadef949213746eeb17aaa8b9acf049b484430fc0bc152ee10f2e007
13. 0x5e700087f2a5e8fb7372f2c2db037d66942006d666bb45dd92f745011295fa7b
14. 0x98c6ed3e7b5bb7f1757a8660af410226a11dd563bf83010040c2ce059ab45e54
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4