Evidence row 452195

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.alexstokes.com/v1/tenders"
    ]
  ],
  "name": "api.alexstokes.com/v1/tenders",
  "owner_address": "0x6180a2f87c9ac53a3ca527c15c1a81a951b95073",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6180a2F87C9Ac53A3CA527c15c1A81A951B95073",
        "scheme": "exact"
      }
    ],
    "description": "UK tenders and public procurement search for apps, automations and AI agents. Search UK government contract notices from Find a Tender by keyword, CPV, delivery region, deadline and value. Returns up to 25 structured notices with buyers, deadlines, values and official source links where available. Bounded ingestion window, not all UK contracts; check free /status. Successful empty searches are chargeable.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "limit": 10,
              "q": "cleaning",
              "status": "open"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": [],
              "meta": {
                "coverage": "Notices in the ingested update window only.",
                "fresh": true,
                "limit": 10,
                "next_offset": null,
                "offset": 0,
                "source": "Find a Tender",
                "total": 0
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "cpv": {
                      "description": "CPV code prefix.",
                      "pattern": "^\\d{2,8}$",
                      "type": "string"
                    },
                    "currency": {
                      "description": "Required with value filters; no currency conversion.",
                      "pattern": "^[A-Z]{3}$",
                      "type": "string"
                    },
                    "deadline_from": {
                      "type": "string"
                    },
                    "deadline_to": {
                      "type": "string"
                    },
                    "limit": {
                      "default": 10,
                      "maximum": 25,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "max_value": {
                      "minimum": 0,
                      "type": "number"
                    },
                    "min_value": {
                      "minimum": 0,
                      "type": "number"
                    },
                    "offset": {
                      "default": 0,
                      "maximum": 1000,
                      "minimum": 0,
                      "type": "integer"
                    },
                    "q": {
                      "description": "Literal case-insensitive AND keyword terms across title, description, buyer and CPV descriptions.",
                      "maxLength": 200,
                      "type": "string"
                    },
                    "region": {
                      "description": "Published delivery region code prefix, e.g. UKG for West Midlands. Not buyer office location; national-only and missing locations may be omitted.",
                      "maxLength": 12,
                      "type": "string"
                    },
                    "snapshot": {
                      "description": "Copy meta.snapshot from page one when offset > 0; changed dataset returns 409.",
                      "maxLength": 80,
                      "type": "string"
                    },
                    "status": {
                      "default": "open",
                      "description": "Derived from the latest ingested notice. Open does not establish supplier eligibility.",
                      "enum": [
                        "open",
                        "closed",
                        "cancelled",
                        "planned",
                        "unknown",
                        "all"
                      ],
                      "type": "string"
                    }
                  },
                  "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": "2026-10-27T09:58:52.753Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-23T23:33:33.367Z"
    },
    "resource": "https://api.alexstokes.com/v1/tenders",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "UK tenders and public procurement search for apps, automations and AI agents. Search UK government contract notices from Find a Tender by keyword, CPV, delivery region, deadline and value. Returns up to 25 structured notices with buyers, deadlines, values and official source links where available. Bounded ingestion window, not all UK contracts; check free /status. Successful empty searches are chargeable."
}

What the leaf hashes

{"body":"488b07919c8a8c890976963815285d81085e9529f21f34eebe505d6bc47304e1","id":452195,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100518541379,"prev":64990,"subject":"x402_bazaar:https://api.alexstokes.com/v1/tenders","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x9d694893224fb1611d90d3dfb99ff8fe7babfb98e9799ec9ecaa5c1c5f7451ee
2. 0x4265f744b8dd18b7f177c06fe953a194a8eace1492b47c137a0815b713a13a50
3. 0xea2dc5902bd0105bf992e74dde06cbdacbfce0230d073a491a38a372fc5fa614
4. 0x6e1d5a3a148790300474b1941e865cbccba571b0450e540ed0328e1bca467921
5. 0xee1c8e5bfc358ef4faf3c87c711ef9550803a482be03cf5a99027854aa727097
6. 0x363708c21c7ac74b9d1e6a59e00e078b3de65ec8332a71bf1428265af730bec4
7. 0xc7cce059be658a791ad63dea5b44e477752e5c813c2c2c4835b2501fc71ac086
8. 0x04e0ccda458cf45bfa800a30eae70da9703a8eaf2bee749da582e6eba4196d39
9. 0xe1f1feb944b74b233bdbd51fa247618504ff3042fbe4b1384ab8a7ac32d1dfc9
10. 0xff9e180b3d149e0efd3fdce83f8cba40e051b166a2b118467d73ab2d083ffb91
11. 0x00030ef583f69b3277c49a56d1ebdd422f1784bcc963473282ee6631e8d9cca4
12. 0x6e52b67215988e172a57437ef7e49cbf100e86fb3bb11c32506b78488daa7f10
13. 0xe8a6f20810396abd4baf9472081cda6d396bc7cf52a77bffdd9f33b41c62adcc
14. 0xb37e6165108af3c1962db6b76953aee5ee86201747a07444ad2760bf2d5dca23
15. 0xa3fff4662cd48659f5bafd0612931759a90e53a7b4209ed8f26f6594a07bb547
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4