Evidence row 116725

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://material.halowerk.com/awg-metric"
    ]
  ],
  "name": "awg_metric_convert",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "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": "Uses the geometric AWG definition, so results are exact for solid round conductors. Mass per metre and resistance follow from the material density and resistivity at 20 degrees Celsius; stranded conductors carry roughly two to five percent more mass and resistance per metre than the same nominal size and are not modelled separately. Supply either awg or cross_section_mm2, not both. Sizes 4/0 through 40 AWG are covered.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "bodyType": "json",
            "exampleUrl": "https://material.halowerk.com/awg-metric/schema#/requestExample",
            "method": "POST",
            "schemaUrl": "https://material.halowerk.com/awg-metric/schema#/inputSchema",
            "type": "http"
          },
          "output": {
            "example": {
              "assumptions": [
                "Solid round conductor per the geometric AWG definition.",
                "Stranded conductors add roughly two to five percent mass and resistance per metre.",
                "Resistance is DC at 20 degrees Celsius, no temperature or skin effect correction."
              ],
              "awg": "12",
              "awg_exact_match": true,
              "cross_section_mm2": 3.3088,
              "dc_resistance_ohm_per_km_at_20c": 5.2107,
              "density_g_per_cm3": 8.96,
              "diameter_mm": 2.0525,
              "direction": "awg_to_metric",
              "length_m": 10,
              "mass_kg": 0.2965,
              "mass_kg_per_km": 29.647,
              "material": "copper",
              "method": "diameter_mm = 0.127 * 92^((36-n)/39)",
              "nearest_iec_60228_mm2": 4,
              "resistivity_ohm_mm2_per_m": 0.017241
            },
            "exampleUrl": "https://material.halowerk.com/awg-metric/schema#/outputExample",
            "schemaUrl": "https://material.halowerk.com/awg-metric/schema#/outputSchema",
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": true,
          "properties": {
            "input": {
              "additionalProperties": true,
              "properties": {
                "bodyType": {
                  "const": "json"
                },
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "method": {
                  "const": "POST"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "json"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T21:58:01.1Z",
    "quality": {
      "l30DaysTotalCalls": 11,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-25T21:58:00.699Z"
    },
    "resource": "https://material.halowerk.com/awg-metric",
    "serviceName": "awg_metric_convert",
    "tags": [
      "materials",
      "cable",
      "conversion"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Uses the geometric AWG definition, so results are exact for solid round conductors. Mass per metre and resistance follow from the material density and resistivity at 20 degrees Celsius; stranded conductors carry roughly two to five percent more mass and resistance per metre than the same nominal size and are not modelled separately. Supply either awg or cross_section_mm2, not both. Sizes 4/0 through 40 AWG are covered."
}

What the leaf hashes

{"body":"b822cb1783f576995832e39f7e4665c2916c4fdb56df0cb743f16ba3bc04cb8e","id":116725,"kind":"listing","method":"baseline/1","observed_us":1793025610209127,"prev":null,"subject":"x402_bazaar:https://material.halowerk.com/awg-metric","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. 0x67f1897f5b8baa1fc6421a13576dca69d058ac329d7c97f6f41b3e82a159f945
2. 0x665c79f60f3eee28753a38b3ba56da285494e9f139879017af7a92981a2a59d7
3. 0x669c9d000ab10312fdc30d94c749952fdde5b7e213495e7a02c0ee08f8d32fa1
4. 0x2f585407b6a420c11f8d5527731f97ba59fcdad85715ea394a917ead59c4c8e2
5. 0x2d06de008424e1e6c143783794e972fd4a70cc2c5b32bd294661aa1827f84f38
6. 0x0a2c1d1476cc2e398d613e5b30b132f6f81a9ae6271a59bbcb665e08b615c8a1
7. 0x14b3d3c2d5b0810f1b778b465807364541dbe40bed0fb8ee093224b29bad6450
8. 0x941f810a93787b7ce4c4baae1ab782ef87214def01d27354b112f4967bb97e92
9. 0x13288c9f27a5bd23388a0ba6abf632e55acfde3a5ac34f9fa55b4fe5acfadbcb
10. 0x5dcc212c9908f2e34dd2b4875dc4504249562165079f2f9e4c59886cedb5b544
11. 0x077c74551bfc77d0c61421c3d34c02b1086f7d8fae7a09ac5ef6d43246c34a52
12. 0x260682fd6ecd274e73505c5e0bd798abdd0e702afca4f8eebd4331b607a6b175
13. 0x5f350d70c252ff1169c0210fd45fce1b0ab8d7316f048741a9e90a6c8cb65dcf
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae