Evidence row 2201939

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://electronics-calc.x402tookit.com/resistor-color"
    ]
  ],
  "name": "Electronics Calculators",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Decode 3 to 6 resistor color bands to ohms, tolerance and temperature coefficient, or encode a value into 4 or 5 bands.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "bands": "red,violet,orange,gold"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T08:33:12.777Z",
              "bands": [
                "red",
                "violet",
                "…2 more"
              ],
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "formatted": "27 kohm",
              "maxOhms": 28350,
              "minOhms": 25650,
              "notChecked": [
                "band reading direction (the tolerance band is usually spaced apart; read from the other end if the first band looks like gold or silver)",
                "the actual measured resistance (use a meter: parts drift and are only within tolerance)",
                "…1 more"
              ],
              "ohms": 27000,
              "reasons": [
                "4-band code: 2 digits, then multiplier, then tolerance."
              ],
              "source": "computed locally",
              "summary": "red-violet-orange-gold = 27 kohm +/-5% (25.65 kohm to 28.35 kohm).",
              "temperatureCoefficientPpm": null,
              "tolerancePct": 5,
              "verdict": "DECODED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "bands": {
                      "description": "Colors in order, e.g. red,violet,orange,gold",
                      "type": "string"
                    },
                    "tolerancePct": {
                      "description": "Tolerance to encode (default 5)",
                      "type": "number"
                    },
                    "value": {
                      "description": "Value to encode, e.g. 4.7k",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "bands": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "formatted": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "maxOhms": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "minOhms": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "ohms": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "temperatureCoefficientPpm": {},
                    "tolerancePct": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:51:53.171Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:51:52.989Z"
    },
    "resource": "https://electronics-calc.x402tookit.com/resistor-color",
    "serviceName": "Electronics Calculators",
    "tags": [
      "electronics",
      "resistor",
      "color-code"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Decode 3 to 6 resistor color bands to ohms, tolerance and temperature coefficient, or encode a value into 4 or 5 bands."
}

What the leaf hashes

{"body":"3b2daf819d5dfcad99ce8c186d1168ddf4ee665807ba015571ec6f10f5ec3ebc","id":2201939,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810278032,"prev":null,"subject":"x402_bazaar:https://electronics-calc.x402tookit.com/resistor-color","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x4b9a91d0df4168fd2858c3f53c3bb56710724b955f56afb29790831788954b14
2. 0x7461b7074be135e8275b39f0e27b70f9d2a033ef5b1868f2148d5b9a7e6dd0c3
3. 0xcaa47672bd8ce573792edbadce77a45556484b4e0faba7bc40a00f64e1bfb31b
4. 0x730f2b16982303d3313cac0b933e599e1ab44f3d2de19e8454c736cbee9433c8
5. 0x14035f17658a7617c0e3cb93b4575c368e169adcc39a733e030689027f2f6588
6. 0x81c410266c8dc8690ab345c26ba0f30ee1d296ffdc89d228c1f7d20ffba3f8a1
7. 0xd89076f44ba08e4c2c21a29d2efe0f54b5b6e62289642821ae2d34d56f9fa0a7
8. 0x7333dd13f115e02cb11947c037bb50cd3f6fe4ec3d86b8a10f6e44c4fcd0773a
9. 0x6617b386f6eb9e4a640b6489dff98bfc5495da032073e214ce900c179bca5abf
10. 0xfd757211cc26abe4b273b7d498cb5c666bca5248fdc3fd63e7f38752ebe52deb
11. 0x2d4bf17549b7dc371aa1c0252d8cb88bd4e60aa372a64e8d504325bb55032782
12. 0xa75340e0bbabb2f0ca98fb3825535e0c36ea9da96d1d4b1af9ca29649e0fc148
13. 0xc2ea6f7cdcf0c6904201c0d186a72f2a6fa2d355f41deec0e55aad057d5b8897
14. 0xf01d425f0c05ac504062d9b471f06fbf10480b3526efb1ee77bb71aebd05f0de
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af