Evidence row 116888

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mearef.dev/v1/answers/vat"
    ]
  ],
  "name": "Mearef - Mid-East reference data",
  "owner_address": "0x1f0409ccd20a2fb497d4decef4e17e9d0688fea6",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1F0409ccD20A2fb497d4DeCeF4E17e9d0688FeA6",
        "scheme": "exact"
      }
    ],
    "description": "VAT rate gross-up or extract for an amount: net/tax/gross incl. statutory levy components",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "amount": 1000,
              "country": "ae",
              "mode": "add"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "amount": {
                      "description": "Amount in the country's own currency",
                      "type": "number"
                    },
                    "band": {
                      "description": "Optional. Apply a statutory reduced/zero/super-reduced band instead of the standard rate. Valid keys per country: GET /catalog (vat_bands_available). Omit for the standard rate — we say when we assumed it. Unknown key is refused free with the list.",
                      "type": "string"
                    },
                    "country": {
                      "description": "ISO country code",
                      "enum": [
                        "ae",
                        "bh",
                        "il",
                        "iq",
                        "jo",
                        "kw",
                        "om",
                        "qa",
                        "sa"
                      ],
                      "type": "string"
                    },
                    "mode": {
                      "description": "add = amount is net, add VAT on top; extract = amount is gross, back the VAT out (default add)",
                      "enum": [
                        "add",
                        "extract"
                      ],
                      "type": "string"
                    },
                    "receipt": {
                      "description": "Optional. true adds an Ed25519 answer receipt on a paid 200, included in this price. Not a certified extract.",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "country",
                    "amount"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "components": {
                      "description": "Per-levy breakdown where the rate is composite (e.g. Ghana VAT + NHIL + GETFund)",
                      "type": "array"
                    },
                    "disclaimer": {
                      "type": "string"
                    },
                    "gross": {
                      "type": "number"
                    },
                    "net": {
                      "type": "number"
                    },
                    "provenance": {
                      "description": "The statutory instrument the answer rests on: effective_from, last_confirmed, official source URL, notes",
                      "type": "object"
                    },
                    "rate": {
                      "description": "Rate applied (combined effective rate where levies stack)",
                      "type": "number"
                    },
                    "receipt": {
                      "description": "Only when receipt=true on a paid 200. kind answer_receipt. Verify at /certified/public-key.",
                      "type": "object"
                    },
                    "status": {
                      "type": "string"
                    },
                    "tax": {
                      "type": "number"
                    },
                    "workings": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "status",
                    "rate",
                    "net",
                    "tax",
                    "gross"
                  ],
                  "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/v1791989458/bazaar-icons/f7fc99e5e62a5464.png",
    "lastUpdated": "2026-10-17T10:24:11.962Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-17T10:24:10.832Z"
    },
    "resource": "https://mearef.dev/v1/answers/vat",
    "serviceName": "Mearef - Mid-East reference data",
    "tags": [
      "vat",
      "tax",
      "gst",
      "middle-east"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "VAT rate gross-up or extract for an amount: net/tax/gross incl. statutory levy components"
}

What the leaf hashes

{"body":"36e0bf7046be351864b51f60c43369c988a4d695f5128eda4cf1991d5271e78b","id":116888,"kind":"listing","method":"baseline/1","observed_us":1793025610377638,"prev":null,"subject":"x402_bazaar:https://mearef.dev/v1/answers/vat","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. 0x117d1790620bc1231546097424b7b0854d35184cabb8961a3ef1243503069e5c
2. 0xe5a9fa8c9b4c59f7c4f4631265ccfa8898c9b29f0369e31cf583ea3051f47401
3. 0xabdfb67f78bc48935bfdaf618dc0984f8978c46db43525dff3c2bff2e69f661d
4. 0x31c56cf5eb525dc3d12105560ebb92a5f0062fa54ac7d9f2321887edfe6f0d90
5. 0x71991611c4848427cd569c5d2a65e50f66c3e52be2b17c036b08774cb980a6f4
6. 0x64b54e7476fb98d0804b52e37fa40a1929e6a3d0afca93efe04d1c2f4a60b7e4
7. 0x708cf8ea61f08dfc3c4f31476a00a3f1213976cfc7a73f270dc9a1b1b3bd9ac3
8. 0x780a3576c7d927124c59b571e86801e4afb554c1c3d64fd257400fdee83c4eef
9. 0x90c81e0dacb4c443b1a82c1637adcc6c98ae484d805a589fb55ce0f8f0af16c0
10. 0x59eeaadc4738eed3343bd128dc8e9beeacada4d8b43799e35d914cb411b97394
11. 0xb3d22f508aaf8117a0a5454390284c48363baa096e225b30af56d708d8dcd0b3
12. 0xc02d9eff6ef94d46d90d54320548f18fc3f05787047265548577569253c19969
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