Evidence row 68061

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.polls.karbach.digital/v1/briefing/:date"
    ]
  ],
  "name": "polls.karbach.digital",
  "owner_address": "0x6d8444caed95d9155785da10ac00247948957d61",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6d8444CaEd95D9155785Da10aC00247948957D61",
        "scheme": "exact"
      }
    ],
    "description": "Daily political briefing for a past date (YYYY-MM-DD, from 2026-04-19). Use for the political situation on a past date. Source-attributed, German data, updated every six hours.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "date": "2026-09-20"
            },
            "type": "http"
          },
          "output": {
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              "data": {
                "available_from": "2026-04-19",
                "date": "2026-09-20",
                "headline": "Merz unter Druck, AfD baut Vorsprung aus",
                "text": "Die AfD festigt ihre Position als stärkste Kraft im Bundestrend: Mit 28,3 Prozent der Stimmen liegt sie 9 Punkte vor der CDU/CSU, die auf 19,3 Prozent kommt...."
              },
              "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. Coalitions are arithmetic majorities only, not statemen...",
              "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
              "source": {
                "polls": "dawum.de",
                "polls_license": "ODbL 1.0",
                "polls_license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
                "processing": "polls.karbach.digital (Max Karbach)"
              },
              "uncertainty": null,
              "updated_at": "2026-09-20 00:00:04"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/briefing/:date",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
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                "pathParams": {
                  "properties": {
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                      "format": "date",
                      "type": "string"
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                  },
                  "required": [
                    "date"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
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                "method"
              ],
              "type": "object"
            },
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                  "type": "string"
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              },
              "required": [
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              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-18T14:02:42.345Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-18T14:02:42.137Z"
    },
    "resource": "https://api.polls.karbach.digital/v1/briefing/:date",
    "serviceName": "polls.karbach.digital",
    "tags": [
      "elections",
      "germany",
      "polls",
      "politics",
      "bundestag"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Daily political briefing for a past date (YYYY-MM-DD, from 2026-04-19). Use for the political situation on a past date. Source-attributed, German data, updated every six hours."
}

What the leaf hashes

{"body":"4477a293829ec96982a87b4404c81bc5fe14a6390ed6183978156944b0d9da56","id":68061,"kind":"listing","method":"baseline/1","observed_us":1793025466129669,"prev":null,"subject":"x402_bazaar:https://api.polls.karbach.digital/v1/briefing/:date","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. 0x10426485dfde25a66d2bbb99fda17ad2b3f512974289cacf0468298fa3fe45dc
2. 0xc8e61823bd1e42303c9da69929926257229ac2963cedb83aee814fc7bffc4211
3. 0xad45aca2e5f847ef1f3c36323223ef9956ad1c5e1013c6ef94cb9ed62eef852c
4. 0xe9771876bb72f05e761c32ead7af512d60974e1b275eb5d2251c705a1ba91c94
5. 0x9410df06bff4f3a4813f967a4a85fba11a80af02f3a0853bf110de250903cbad
6. 0x5d9def792328172bb58809143a0b3a64e9ed2f0891f335ba65bb619af8567efa
7. 0x1952965d877b198a0f34f8108a6c41a0cd5f79d1e9265abc0929e7bda26bdc12
8. 0x36bf52c7eeed10c4089d0d8ea33d21517cae2d51f436728542985e35f701e3f7
9. 0x465aab69fd4c4072371aa999c287e1b1b1240a9c41ac41a8dfae61dd8a81e0fd
10. 0x966bf10795d50c9f81eb3c272b7279beecfe723480c50bbb3c87bcd23b5cd5b5
11. 0x27ff2940d5376ec3cc70015c126b688bae838938b2846686279ceb190eb69456
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