Evidence row 2201980

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://dev-reference.x402tookit.com/mime-type"
    ]
  ],
  "name": "Dev Reference",
  "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": "Media type (MIME) for a file extension, or extensions for a media type, with IANA registration status.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "ext": "webp"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T14:26:46.641Z",
              "conventionalOnly": false,
              "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.",
              "ext": "webp",
              "extensionsForType": [
                "webp"
              ],
              "fallback": "application/octet-stream",
              "ianaRegistered": true,
              "lookup": "extension",
              "mediaType": "image/webp",
              "notChecked": [
                "the extension table is a curated list of about 150 common extensions, not exhaustive, and the OS or server may map differently",
                "the actual content of a file (a .jpg can contain anything: sniff the bytes if it matters)",
                "…2 more"
              ],
              "reasons": [
                "The media type appears in the IANA registry."
              ],
              "source": "IANA Media Types registry (retrieved 2026-10-11) for registration status; extension pairs curated for this shelf (IANA publishes no extension table)",
              "summary": ".webp is image/webp (registered with IANA).",
              "verdict": "REGISTERED_TYPE"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "ext": {
                      "description": "File extension without the dot, for example webp",
                      "type": "string"
                    },
                    "type": {
                      "description": "Media type, for example image/svg+xml",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "conventionalOnly": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "ext": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "extensionsForType": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "fallback": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "ianaRegistered": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "lookup": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "mediaType": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:49:11.96Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:49:11.794Z"
    },
    "resource": "https://dev-reference.x402tookit.com/mime-type",
    "serviceName": "Dev Reference",
    "tags": [
      "mime-types",
      "media-types",
      "file-extensions",
      "reference"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Media type (MIME) for a file extension, or extensions for a media type, with IANA registration status."
}

What the leaf hashes

{"body":"2a2c5c85550c6c71abc8d89f709534d353723aeb33ba9305e2751d6faad88c32","id":2201980,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646811112699,"prev":null,"subject":"x402_bazaar:https://dev-reference.x402tookit.com/mime-type","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. 0x4ab5e76cad095ee41ad3b6873e130c8640a257b16e1179af1c33381d1ca72168
2. 0x0ca5986bbb5cb05f66512f6586a51dbc5369479d1575239da14ea8213f3cd5a5
3. 0x91950b321e45a7bd62186545e8dee83b7c0ffcb6b8e3ed8d37f6b069237c4ee6
4. 0x4b30ee9f6bf4798c469b436573279db4c033c1d272e4ba2130a39b4c0d5f41bf
5. 0x1c32a26d5c3121fca44e82397e98a237418ef328add46e36cb0661900c8148f2
6. 0x12d366a2eec82f538e597b0ff6369e7ab592b57a79657119fae01687c84f51a2
7. 0xd7ed34adc2d8a7eea6477785d9e5a977f70a2e9cbf5ffb163d9d3c425529bf4f
8. 0x691899a7105c68131d9b6db064ed6a2b44629d925f97016cd4aabb31a60c637e
9. 0x3b634c3faa41a709c609892875537d801356eca05870ad2df8dc57c540448e54
10. 0x40a81db79d8a8f12896a32cfa57ccd2e0a1e86d5f5130b08e2eb389493b79c8d
11. 0xf16e12df21054354b1988db5a37e1fa0f47be3ed7efc71b621151fb1957d1e4d
12. 0x3b4b3d1662d175bef0331a8e093b2c1fad598947e07aab3c5c1843104097cf03
13. 0xec50fb8bdb629a8eec60882415de93b837c0015821049eeb6965a6cdd0d6c186
14. 0xdc58bc56b35577036d6185abcf0d4c91a45df10bd65f767505c1d43fcecde566
15. 0x3217f821997a6d778dcf0814a25b1296c55ab77710c675e7b15695d25a6ce67d
16. 0x8760c227928c5295506cd8606e763f86cf8cd2a549820fab4dc86d29ca0d816d
17. 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af