Evidence row 75784

Observed 26 Oct 2026, 14:38 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://geo.halowerk.com/v1/line-simplify
Recorded: 26 Oct 2026, 14:38 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 2c184a31570440620946108dccf19b4c40ff96bbf355c00e8c63aa569b728010
Leaf: 0xbd1569720cb2bd59395350983e13066b417b6ae53a268027a3288e37c2a6ac30

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://geo.halowerk.com/v1/line-simplify"
    ]
  ],
  "name": "geo.halowerk.com/v1/line-simplify",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Simplifies a planar line with the Ramer-Douglas-Peucker algorithm. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. ",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "points": [
                {
                  "x": 0,
                  "y": 0
                },
                {
                  "x": 1,
                  "y": 0.01
                },
                {
                  "x": 2,
                  "y": 0
                }
              ],
              "tolerance": 0.1
            },
            "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": {
                    "points": {
                      "items": {
                        "additionalProperties": false,
                        "properties": {
                          "x": {
                            "description": "",
                            "maximum": 1000000000000,
                            "minimum": -1000000000000,
                            "type": "number"
                          },
                          "y": {
                            "description": "",
                            "maximum": 1000000000000,
                            "minimum": -1000000000000,
                            "type": "number"
                          }
                        },
                        "required": [
                          "x",
                          "y"
                        ],
                        "type": "object"
                      },
                      "maxItems": 100000,
                      "minItems": 2,
                      "type": "array"
                    },
                    "tolerance": {
                      "description": "",
                      "maximum": 1000000000000,
                      "minimum": 0,
                      "type": "number"
                    }
                  },
                  "required": [
                    "points",
                    "tolerance"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:13:35.894Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-08T06:13:35.434Z"
    },
    "resource": "https://geo.halowerk.com/v1/line-simplify",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Simplifies a planar line with the Ramer-Douglas-Peucker algorithm. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age."
}

What the leaf hashes

{"body":"2c184a31570440620946108dccf19b4c40ff96bbf355c00e8c63aa569b728010","id":75784,"kind":"listing","method":"baseline/1","observed_us":1793025491086185,"prev":null,"subject":"x402_bazaar:https://geo.halowerk.com/v1/line-simplify","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).

0xbd155f5daed0ca7995e812f3de0baccce05d3eaaeaece68219688fbd7f08caea
0x9ff8e568b01a6ac6fde1c84a9cbc1c5c032082576cabe15d615302e96d06da3f
0xf9e988ce37ad3083ec842d31d1477351c37c4e9d7ccb33f2e94f8421952001a3
0x69061a87ccb9a199a97b777ae39317d5eb799dbe97333c0a70d6b7402b8e7677
0xfa493af5e69543a9bb28fffdee7c05fbc628abfb986bf5df68e42faadc037687
0x2d824ca82b8a5c8ae20b18f1f618415a7e368b46dcf27d632c18944b287af14b
0xf2cc16a91d4b8f281ddf2b768be5e49a6c43aed3b6b3efed96e89ad45a45d5f1
0xe02d20198d0a38058f13dffb86a054b3c5bb89d1cc8fe9c1558da9e8233b5cb2
0x64a2f21b5af86d870bb79dbf55048006abbad7fee92c3e44e2ea5cf5c80c86af
0x70fe24d78b58f8abec40e79e3452c3ede45cf737f4a71973b737bc6cdda64101
0x135102b1595b48b3b1604ed9b55766b9654dc2e33631a8be15cb316d09a36075
0xa6f71fd6c3a59323bf7c5386a54935b14c555d8c717289cc73700f56d86994cd
0xd5b5bb5812612371a70171b2252d90e95bb0581ea5a3be198122adc8442e4f79
0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON