Evidence row 64127

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agentstoolshub.com/api/v1/geo-time/distance-calculator"
    ]
  ],
  "name": "AgentsToolsHub",
  "owner_address": "0x8a0f2b0a6c82d1c54b16e2e4decd18ff0802b0f6",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8a0F2b0a6C82D1c54B16E2e4DEcd18fF0802b0f6",
        "scheme": "exact"
      }
    ],
    "description": "Great-circle (haversine) distance between two latitude/longitude points in km, miles and nautical miles, plus initial bearing and the geographic midpoint. Deterministic spherical math on the IUGG mean Earth radius. Use this when an agent needs to great-circle distance and bearing between coordinates.",
    "extensions": {
      "analytics": {},
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "lat1": 52.52,
              "lat2": 40.7128,
              "lon1": 13.405,
              "lon2": -74.006
            },
            "type": "http"
          },
          "output": {
            "example": {
              "result": {
                "answer": "6,385 km (3,967.5 mi)",
                "answerLabel": "Great-circle distance",
                "details": [
                  {
                    "label": "Miles",
                    "value": "3,967.46"
                  },
                  {
                    "label": "Nautical miles",
                    "value": "3,447.63"
                  },
                  {
                    "label": "Initial bearing",
                    "value": "296.0° (WNW)"
                  },
                  {
                    "label": "Midpoint",
                    "value": "55.5130, -36.2704"
                  }
                ],
                "steps": [
                  "Haversine: a = sin²(Δφ/2) + cos φ1 · cos φ2 · sin²(Δλ/2)",
                  "Central angle c = 2·atan2(√a, √(1−a)) = 1.002198 rad",
                  "Distance = R · c with R = 6371.0088 km"
                ],
                "value": 6385.012
              },
              "tool": "distance-calculator"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "lat1": {
                      "description": "Latitude 1",
                      "type": "number"
                    },
                    "lat2": {
                      "description": "Latitude 2",
                      "type": "number"
                    },
                    "lon1": {
                      "description": "Longitude 1",
                      "type": "number"
                    },
                    "lon2": {
                      "description": "Longitude 2",
                      "type": "number"
                    }
                  },
                  "required": [
                    "lat1",
                    "lon1",
                    "lat2",
                    "lon2"
                  ],
                  "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": "2026-10-19T20:36:47.011Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-19T20:36:46.867Z"
    },
    "resource": "https://agentstoolshub.com/api/v1/geo-time/distance-calculator",
    "serviceName": "AgentsToolsHub",
    "tags": [
      "geo-time",
      "general"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Great-circle (haversine) distance between two latitude/longitude points in km, miles and nautical miles, plus initial bearing and the geographic midpoint. Deterministic spherical math on the IUGG mean Earth radius. Use this when an agent needs to great-circle distance and bearing between coordinates."
}

What the leaf hashes

{"body":"b8063fd92daf4db3d1856ff5d5d1c16c50eaa352c4e4ef2cb5f8c8bc341d3a5f","id":64127,"kind":"listing","method":"baseline/1","observed_us":1793025456076726,"prev":null,"subject":"x402_bazaar:https://agentstoolshub.com/api/v1/geo-time/distance-calculator","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. 0x3e91c49cd21aa86a1c7bc4b0df60e2c3eaeae97744e4ffd825fbf2d7e1e76ebf
2. 0xef90380fc05936596efb658053fae867c3a0404492e37e274123b2b62f7406ea
3. 0x14aca88fd1040b9acc33d6d48ea0b316aab8e9fbba96cfd0aae18190115f2cd9
4. 0x4399c1a87edba137a1646520a452458c9b6208e13147b7fefcb80f5956d4164e
5. 0x2855641b4d4f8edb0ace8b2cbaa89a642a12910fa4b1096f5349d73c2ea89bd6
6. 0xcb283317c85aaf5e8f1d37789e39f1c16307838713143dbcc92c74d014e9eeee
7. 0x995b8534d26f782b95e501f1ab5f219c8e8128ebc4048fb943785f5b995b8951
8. 0x266023a7ca2e27ad2f8159a7a5f583b840e84538d5e24c91772258c7db63cb67
9. 0x278b57004432e1248c5169a8df1b1834df696ee7256b842515a2b0c2f6f3ecad
10. 0x870d07b9eca299ca4a4138d50bec59a15e7e0971fcb5751398118bfa5b9f74e6
11. 0xeff3ae4ccee9e9ab663bed39de24a2076950808876228a89701d6ab7f016bd7e
12. 0x1afc0318a98c6dbb5a80e5cb86eba22b844e3f3b185a16f17290e29ab7410f55
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae