Evidence row 123560

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://unit.openverbs.com/v1/list"
    ]
  ],
  "name": "List units",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "measure": "length"
            },
            "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": {
                    "measure": {
                      "description": "Restrict to one measure, one of length, area, mass, volume, each, temperature, time, digital, partsPer, speed, pace, pressure, current, voltage, power, reactivePower, apparentPower, energy, reactiveEnergy, volumeFlowRate, illuminance, frequency, angle.",
                      "enum": [
                        "length",
                        "area",
                        "mass",
                        "volume",
                        "each",
                        "temperature",
                        "time",
                        "digital",
                        "partsPer",
                        "speed",
                        "pace",
                        "pressure",
                        "current",
                        "voltage",
                        "power",
                        "reactivePower",
                        "apparentPower",
                        "energy",
                        "reactiveEnergy",
                        "volumeFlowRate",
                        "illuminance",
                        "frequency",
                        "angle"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:37:20.223Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-08T05:37:19.952Z"
    },
    "resource": "https://unit.openverbs.com/v1/list",
    "serviceName": "List units",
    "tags": [
      "list supported units",
      "unit metadata lookup",
      "valid unit abbreviations",
      "measurement units api",
      "discover conversion units"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values."
}

What the leaf hashes

{"body":"426c0b21b0fc2a9dec830e7d1bcf5148c36c758ab54d5719958601bef4867265","id":123560,"kind":"listing","method":"baseline/1","observed_us":1793025623317422,"prev":null,"subject":"x402_bazaar:https://unit.openverbs.com/v1/list","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. 0x6e5fe59ec390dbb3bd85f1c24709ccc2e155d8cb256eebc85363249d59765fc2
2. 0x207645aa4fb3df5922bd19782fce644a01c7b373afdc619d54255c72c44258e5
3. 0xc4223c9cc4bbfc63dd7602ebc0eee8a925442cbc7d8a329fa474fed6aac84a3d
4. 0x3a63640cc9ac3a56bc289ce99d555ef6c6539bd07947051470a7d7fa00bb7b46
5. 0x844acaae8b5ad11b1a92ace496842a3321d965d78893f5d9cfd45ec882bb7950
6. 0x0613080ba954796d8d59fe2bb1d0a6e58add4bd9b38479202fda5b9da4dc3fc0
7. 0x1a433e68536690335336478e330e27c4937ea0919f27122215b797bf3b7c1a9e
8. 0xc6ec6f8442cee646d73855f0d46a7def612f9e4d1ce74d0f13ca05a0307e1e24
9. 0x027bacb03f66fd117cebcfa0c93fcbed349f8cd34d7ca4b62a1550f1b51d83c1
10. 0xaee08b0a7fe6600aebc470a11e9a419553ea293db9d18d86b66fe6794f3e5b55
11. 0x3167834b22bda59442a4af0440d698d3a42612c3d6ce4e293e0fa97975320c38
12. 0x134f9b6d26973548d1c789e6b61a12b25e2a5a8fb632e692cd20a1b08d766a1b
13. 0x14b83e3bc6587240f31cd033d09d131e0775b7b00aada9042597008a70399013
14. 0xfc9b5a81a7a83a1c735a4fe64590beb9db14d2366f463161358af28c3ea9a81d
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae