Evidence row 68072

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.polls.karbach.digital/v1/constituencies/by-postcode/:plz"
    ]
  ],
  "name": "polls.karbach.digital",
  "owner_address": "0x6d8444caed95d9155785da10ac00247948957d61",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6d8444CaEd95D9155785Da10aC00247948957D61",
        "scheme": "exact"
      }
    ],
    "description": "Which Bundestag constituency a German postcode belongs to. Use when you have a German postcode and need the constituency. Source-attributed. Refused (503, not charged) if data is older than 13 hours.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "plz": "10115"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "constituency": 299,
                "detail": "https://api.polls.karbach.digital/v1/constituencies/299",
                "name": "Homburg",
                "note": "The postcode lies in one constituency.",
                "postcode": "66453",
                "race": "https://api.polls.karbach.digital/v1/constituencies/299/race",
                "state": "SL"
              },
              "docs": "https://api.polls.karbach.digital/v1/",
              "model": null,
              "notice": "Scenario analysis based on published opinion polls. Not a prediction and not a voting recommendation. Coalition figures count simulated seat majorities (see ...",
              "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
              "source": {
                "constituency_boundaries": "Die Bundeswahlleiterin, Wiesbaden",
                "constituency_boundaries_license": "Datenlizenz Deutschland Namensnennung 2.0",
                "polls": "dawum.de",
                "polls_license": "ODbL 1.0",
                "polls_license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
                "postcode_centroids": "WZB, plz_geocoord (CC BY)",
                "postcode_mapping": "polls.karbach.digital",
                "postcode_municipalities": "OpenPLZ API (municipalities per postcode) and the municipal administration postcodes of the Bundeswahlleiterin's constituency list",
                "processing": "polls.karbach.digital (Max Karbach)"
              },
              "uncertainty": null,
              "updated_at": "2026-10-21T18:41:09.343791"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/constituencies/by-postcode/:plz",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "plz": {
                      "description": "German postcode",
                      "pattern": "^\\d{5}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "plz"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T18:21:20.088Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T18:21:19.424Z"
    },
    "resource": "https://api.polls.karbach.digital/v1/constituencies/by-postcode/:plz",
    "serviceName": "polls.karbach.digital",
    "tags": [
      "elections",
      "germany",
      "polls",
      "politics",
      "bundestag"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Which Bundestag constituency a German postcode belongs to. Use when you have a German postcode and need the constituency. Source-attributed. Refused (503, not charged) if data is older than 13 hours."
}

What the leaf hashes

{"body":"b3affdc76a5b142561920f64e22918f2c3a02bd39e805132d35db29bd6adf012","id":68072,"kind":"listing","method":"baseline/1","observed_us":1793025466144631,"prev":null,"subject":"x402_bazaar:https://api.polls.karbach.digital/v1/constituencies/by-postcode/:plz","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. 0xd41ed229a272b96d106d46a2890e350e0c8dae02c7d7ef7ab7fe738de1521561
2. 0xcf784242bbf6268abe2661acf7319f500f27abdb46ecdd1dddb262ed91ca2000
3. 0x4598ef58d019527ff05ea7b586564c512af696372e825a1fd331750ddc7bdc90
4. 0xcbcf5dbe1fe06b07cc370a7d88447f5cb68c51580bbb5e582ed19c04f1e34b54
5. 0x27e7cc7f4fbfec9a9ced64a5b6ff5ca0a2300c7a17f980e42b05566065864bdb
6. 0x52d4c62ea89bfcb48196d57ed3d541db02202ced2fa5b139449b981851fcc0d9
7. 0x2aa33a6d219a2fc0c67330c9a32e9c14248667817b17e1c9a293eb0cf8a51636
8. 0x1d50a7b6b0ba757441b7039084ee3bdbec2064b85bd5be74ce28299258528bf0
9. 0x77710ff073cbaa3d56a41cbab3e18e18de3f9c30092854e03c86fa1bf50efe30
10. 0xa2e80671dd591188e2f9ffca4feadda9599a056a371af323021b390343be0982
11. 0x14362d8e1df4e5c0cf9c6949986f8f51c6a0b5605b593e145aade16c5f5c871a
12. 0x9f6b360f1992898cb3f17e45d0bf5a96f946d7eaf9705a57af03c151a407d239
13. 0x889eefefef2d4457fe6114f397df813a5cbb85011a6f40309b54ddcd4aba3bd1
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae