Evidence row 426867

Observed 27 Oct 2026, 07:31 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://x402-niche-briefs.fly.dev/v1/amazon-vine-roi-estimator
Recorded: 27 Oct 2026, 07:31 UTC
Previous row: #409327
Body SHA-256: 8e4e566d17e0d525108e15501cb93887c1fb3379e6e99f62b8d7a490f5526efa
Leaf: 0x838d9af3269ecb131bb13e5b079f9cce176b9337720eea6a50ddd5c625c473c4

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-niche-briefs.fly.dev/v1/amazon-vine-roi-estimator"
    ]
  ],
  "name": "Amazon Vine ROI estimator",
  "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": "Estimate Vine enrollment cost and break-even incremental units.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "unit_cogs_usd": "8",
              "unit_margin_usd": "9",
              "units_enrolled": "30"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-25",
              "breakeven_incremental_units": 49,
              "enrollment_fee_usd": 200,
              "input": {
                "unit_cogs_usd": 8,
                "unit_margin_usd": 9,
                "units_enrolled": 30
              },
              "total_cost_usd": 440
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "unit_cogs_usd": {
                      "description": "Unit landed cost",
                      "type": "string"
                    },
                    "unit_margin_usd": {
                      "description": "Unit contribution margin",
                      "type": "string"
                    },
                    "units_enrolled": {
                      "description": "Units enrolled",
                      "type": "string"
                    }
                  },
                  "required": [
                    "units_enrolled",
                    "unit_cogs_usd",
                    "unit_margin_usd"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "breakeven_incremental_units": {
                      "type": "number"
                    },
                    "enrollment_fee_usd": {
                      "type": "number"
                    },
                    "input": {
                      "properties": {
                        "unit_cogs_usd": {
                          "type": "number"
                        },
                        "unit_margin_usd": {
                          "type": "number"
                        },
                        "units_enrolled": {
                          "type": "number"
                        }
                      },
                      "required": [
                        "units_enrolled",
                        "unit_cogs_usd",
                        "unit_margin_usd"
                      ],
                      "type": "object"
                    },
                    "total_cost_usd": {
                      "type": "number"
                    }
                  },
                  "required": [
                    "input",
                    "enrollment_fee_usd",
                    "total_cost_usd",
                    "breakeven_incremental_units",
                    "as_of"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T02:13:32.658Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T02:13:32.493Z"
    },
    "resource": "https://x402-niche-briefs.fly.dev/v1/amazon-vine-roi-estimator",
    "serviceName": "Amazon Vine ROI estimator",
    "tags": [
      "marketplace",
      "amazon",
      "reviews"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Estimate Vine enrollment cost and break-even incremental units."
}

What the leaf hashes

{"body":"8e4e566d17e0d525108e15501cb93887c1fb3379e6e99f62b8d7a490f5526efa","id":426867,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086313677296,"prev":409327,"subject":"x402_bazaar:https://x402-niche-briefs.fly.dev/v1/amazon-vine-roi-estimator","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).

0x838df0374ccfe5ee3ee622a9608622b1f3f3f9d7fe88dd0a0733a6c4126f35dd
0xc8632f570961c2e1791f18a96495cd92e1ab0e40dfc3e521c2890cce1328d1f7
0x51f6c0c91e376f5dbb44b0e11efde3362655f97efba5ad96bb8402d26ee34d54
0x04923c1b0f0c1b2934aac60de45e264097fe92fac671b0f000ed0c464a44b7ce
0x595c7b76d560a7ced8309bbf14d187d502984f9ad5538cf0a79b34554a8fef05
0x9f360ac84913c9c9b4db39065f8d7a27eea77e079eb30edc4c8a6f0859ce2a16
0x69c927f1b8276bbba394d38b227a9175ea29e0d273294aa913c3f89f0832c748
0xb0c005d2020a6dbd3922a08a0fd1b191c751b6f38a4ccd617235b76ed1acbc3b
0xd8c261019a96069dc1c17173a782e027b253613aa1e5cf94b4623bd7c83d6eab
0xcd8ebc31a4970d231d9ce2d1cb1373a6e375df5d9f74c42470cffde84210b3da
0x69ad1309fe9bbc24d7bdbeeaf4d207a05f7951e907da0dcd9dfb83b3df0c6253
0xfe1f74bbe32292598f931fa103e4afbd12a8e628c1b49eb8ec0da417a917061f
0x07d414626f116f3edc6ddb34183ed02538c3a805fec6db00f9d764f8fd595d04
0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root: 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
Chained: 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
Published: On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4

How to check it · This row as JSON