Evidence row 123733

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vat.openverbs.com/v1/poland"
    ]
  ],
  "name": "Validate Polish VAT number",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "6000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Validate a Polish VAT (NIP) number against the official VAT register. Validity means the taxpayer's VAT status is active (Czynny).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "vatNumber": "PL5260250274"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "vatNumber": {
                      "description": "Polish VAT/NIP number — \"PL\" + the 10-digit NIP. A leading \"PL\", spaces and dashes are tolerated.",
                      "maxLength": 20,
                      "minLength": 10,
                      "type": "string"
                    }
                  },
                  "required": [
                    "vatNumber"
                  ],
                  "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"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:25:42.189Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:25:41.921Z"
    },
    "resource": "https://vat.openverbs.com/v1/poland",
    "serviceName": "Validate Polish VAT number",
    "tags": [
      "polish vat validation",
      "poland nip lookup",
      "validate polish nip",
      "vat white list lookup",
      "poland vat api"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Validate a Polish VAT (NIP) number against the official VAT register. Validity means the taxpayer's VAT status is active (Czynny)."
}

What the leaf hashes

{"body":"fe0c844f384e7c58ecdbb32cab0187d8ddebeac6f6047540f1f0d4b06f829292","id":123733,"kind":"listing","method":"baseline/1","observed_us":1793025623661639,"prev":null,"subject":"x402_bazaar:https://vat.openverbs.com/v1/poland","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. 0x2941bee76cc89a1b89b2086af52795527428baec1c685c19dcf67aadeb5ac15b
2. 0xf747d639cdb96424c913f6d49f6b9e0ca0b9b43af8790d2c66684bbc1b6c5317
3. 0xddc5c93c17bcea8aa1825524065e1474693a3285f6d6fce7d81d9c6736ce2d5d
4. 0x8571bf9520b3d7fa9caf9103ae23c6c27ff7801d60d24fef50a13a6fb631994f
5. 0x93c62d3527714eb14be0dd830dd2f9161d18bf62ed0dd4244cb17cefbf291675
6. 0xaa0d3036df6147e65fc0f691ba7b65654e5106a9c11c019a73d54b212dd14c6d
7. 0x78d45e260766d13688b489fcc8636248bb449e82b148ef69d23c866581b8a5e4
8. 0x5cc42c120ddfda0dbc28bca4953ab5d1e9ae5633aed5680b13ca9f65334c70a0
9. 0xd063e448ebafb059e39a979ee95d340c26135ba57eb09da8f9869d87e9dc4153
10. 0x1a9dd2d6c9bfb929760c53b8e10be270bca312fc14f5154114295b3087b11726
11. 0x525ed12bc40d74342377fb46a14f281838d153c85147520116f4d7fa219aff5e
12. 0xeab0020f03650c1a79ed79927ae9d808c59a41295a86d1285582516590c954e6
13. 0x16a8fb19a5e4f4535e7cb3fce5c15ecfa188586bb74e347ee71164f8af27dfe1
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae