Evidence row 218620

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-niche-briefs.fly.dev/v1/retail-media-roas-calc"
    ]
  ],
  "name": "x402-niche-briefs.fly.dev/v1/retail-media-roas-calc",
  "owner_address": "0x847f54ae8ddfd71ed7bc930c1f7a73576fab03a9",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
        "scheme": "exact"
      }
    ],
    "description": "ROAS, iROAS and CPA for CPG retail-media campaigns.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "attributed_sales_usd": "7000",
              "incrementality_pct": "40",
              "orders": "350",
              "spend_usd": "2000"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-25",
              "cpa_usd": 5.71,
              "input": {
                "attributed_sales_usd": 7000,
                "incrementality_pct": 40,
                "orders": 350,
                "spend_usd": 2000
              },
              "iroas": 1.4,
              "roas": 3.5
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "attributed_sales_usd": {
                      "description": "Attributed sales",
                      "type": "string"
                    },
                    "incrementality_pct": {
                      "description": "Incremental share %",
                      "type": "string"
                    },
                    "orders": {
                      "description": "Attributed orders",
                      "type": "string"
                    },
                    "spend_usd": {
                      "description": "Ad spend",
                      "type": "string"
                    }
                  },
                  "required": [
                    "spend_usd",
                    "attributed_sales_usd",
                    "incrementality_pct",
                    "orders"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "cpa_usd": {
                      "type": "number"
                    },
                    "input": {
                      "properties": {
                        "attributed_sales_usd": {
                          "type": "number"
                        },
                        "incrementality_pct": {
                          "type": "number"
                        },
                        "orders": {
                          "type": "number"
                        },
                        "spend_usd": {
                          "type": "number"
                        }
                      },
                      "required": [
                        "spend_usd",
                        "attributed_sales_usd",
                        "incrementality_pct",
                        "orders"
                      ],
                      "type": "object"
                    },
                    "iroas": {
                      "type": "number"
                    },
                    "roas": {
                      "type": "number"
                    }
                  },
                  "required": [
                    "input",
                    "roas",
                    "iroas",
                    "cpa_usd",
                    "as_of"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T11:02:51.178Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T11:02:51.021Z"
    },
    "resource": "https://x402-niche-briefs.fly.dev/v1/retail-media-roas-calc",
    "tags": [
      "marketplace",
      "retail-media",
      "cpg"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ROAS, iROAS and CPA for CPG retail-media campaigns."
}

What the leaf hashes

{"body":"c3517137d322e0b6b0e7ebc82d44ce7c040a9dd050501a07bdbbc82119c793cd","id":218620,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026638338705,"prev":null,"subject":"x402_bazaar:https://x402-niche-briefs.fly.dev/v1/retail-media-roas-calc","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x0ff20c0f31274f023ad5cf08d4db8081ef36016a86b60e69224e2f961de27329
2. 0x27675b13b067965f10a4cfa91769ac1fd7add7461fde4f13d98a4e6105afbd51
3. 0x95cf9924292ef12e426a9d7f4e069dff81def5f18791733c905ba5f812df03d6
4. 0xa77b9d4e89c5cb0a111c41b7830f77ab8733402afe7c1bca82cfdb8b24fb0673
5. 0x263ce0bd87afd7e854b1ddf0dfdcdd10bda63dc2357515470ee626faa799101b
6. 0xb7fed6bedf4be54fbb0f0857f501d43c09b77ca131dae1f65a897e3c1b6ac439
7. 0x7a27c14fd8d61c15a60d7cb2aa1820cef4227eef25b271f00ed9ba3e23222a60
8. 0xa91362cae38843248918946141ef338c25d76caf5b912d3bd0d2fdd44ca15130
9. 0x408b4b0d88b50e53b862ace299a0857608e658ebbbe49159e1bfa41d695e3552
10. 0xaa43465b4a572fffa8395a77131320726863b79220ee24a33f803988e66ef177
11. 0xb8387431db70826417a9bc1c445139bee1e0c5d359e4f9e2d85832f49bafe68b
12. 0x129649b2ec48fbc611fb055c3f5627bda42692beb65d09e853d75bcda4e06239
13. 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae