Evidence row 218684

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-niche-briefs.fly.dev/v1/bullwhip-effect-scorer"
    ]
  ],
  "name": "Bullwhip effect scorer",
  "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": "Order variance amplification ratio.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "demand_mean": "100",
              "demand_std": "20",
              "orders_mean": "100",
              "orders_std": "45"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-25",
              "bullwhip_ratio": 5.06,
              "fixes": [
                "share POS data",
                "reduce lead time"
              ],
              "input": {
                "demand_mean": 100,
                "demand_std": 20,
                "orders_mean": 100,
                "orders_std": 45
              },
              "severity": "severe"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "demand_mean": {
                      "description": "Mean demand",
                      "type": "string"
                    },
                    "demand_std": {
                      "description": "Std dev of customer demand",
                      "type": "string"
                    },
                    "orders_mean": {
                      "description": "Mean orders",
                      "type": "string"
                    },
                    "orders_std": {
                      "description": "Std dev of orders placed",
                      "type": "string"
                    }
                  },
                  "required": [
                    "demand_std",
                    "orders_std",
                    "demand_mean",
                    "orders_mean"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "bullwhip_ratio": {
                      "type": "number"
                    },
                    "fixes": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "input": {
                      "properties": {
                        "demand_mean": {
                          "type": "number"
                        },
                        "demand_std": {
                          "type": "number"
                        },
                        "orders_mean": {
                          "type": "number"
                        },
                        "orders_std": {
                          "type": "number"
                        }
                      },
                      "required": [
                        "demand_std",
                        "orders_std",
                        "demand_mean",
                        "orders_mean"
                      ],
                      "type": "object"
                    },
                    "severity": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "input",
                    "bullwhip_ratio",
                    "severity",
                    "fixes",
                    "as_of"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T11:04:03.999Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T11:04:03.832Z"
    },
    "resource": "https://x402-niche-briefs.fly.dev/v1/bullwhip-effect-scorer",
    "serviceName": "Bullwhip effect scorer",
    "tags": [
      "supply-chain",
      "demand"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Order variance amplification ratio."
}

What the leaf hashes

{"body":"951e98913af30256b779eb95348e8e0522844523dc712051cdb92fcf74428bc3","id":218684,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026639958208,"prev":null,"subject":"x402_bazaar:https://x402-niche-briefs.fly.dev/v1/bullwhip-effect-scorer","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. 0x529ce3f66fd5e0e4301468a6448dab413c50e34d06fd9b7d57fab7f5c31cfb53
2. 0x2e6d0a1f66995542d2f39478207674c397d0f8609e3e91596a01ed766b754a41
3. 0x5fbc396651e819267d9bee2aaa14c523d481ebcf4a1bb8d97d01c982940e4ab0
4. 0xe5d903bbc46dbd6433c5d009d970f49632fb64ab3091e51e4e12728d4d1cd959
5. 0xeaf236f53e8d6dafa8e1579791608cdafcd118d2747207fb3ea91fc046b8fade
6. 0x4b22d58e012a01ee049dfc7460ca5066a81c358a90a75c93cd8e36af419c261a
7. 0x5f719026b2d2f0278ebe87dc8e330b93d8f019c5dea72cc2d7e0d3188ea9ab5a
8. 0x21c0ed66740821ddb62ccbe39bcaaa4277ae22f7eeb46b1328288a3320b8a536
9. 0x3607751c77b1cabe074486d0fd53659a0e321fb7a8fd3bf133eaa6801af9c112
10. 0xb8b1a249955b6487f765c3f074e474715f38edf3720c5c3ca9427be80aba6ea5
11. 0x11ae5fc5d08fb7b25beace35e67656980e21edfc94e809110b5b9ecae306b6c8
12. 0x94dd4ed7cf198df741ccda83eacc422aadb31119fc6e84c4a6d2f023453b7960
13. 0xd830c52e1e8095e014510110592485afcb02b9c9a36f85653e4891a8de941246
14. 0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae