Evidence row 301687

What was observed

{
  "count": 11,
  "tools": [
    {
      "description": "Creates a webhook subscription (additive). The project will POST to target_url when the chosen event fires. REST API: POST /webhooks/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "event": {
            "description": "Event to subscribe to. Default \"file.uploaded\".",
            "type": "string"
          },
          "is_active": {
            "description": "Whether the webhook is active. Default true.",
            "type": "boolean"
          },
          "target_url": {
            "description": "URL the webhook will POST to.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "target_url"
        ],
        "type": "object"
      },
      "name": "uploadcare_create_webhook"
    },
    {
      "description": "Permanently deletes a file from the project. Destructive. REST API: DELETE /files/{uuid}/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "uuid": {
            "description": "File UUID to delete.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "uuid"
        ],
        "type": "object"
      },
      "name": "uploadcare_delete_file"
    },
    {
      "description": "Get full info for a single file: uuid, url, original_filename, size, mime_type, is_image, is_ready, timestamps, variations, content_info, metadata, tags. REST API: GET /files/{uuid}/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "uuid": {
            "description": "File UUID.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "uuid"
        ],
        "type": "object"
      },
      "name": "uploadcare_get_file"
    },
    {
      "description": "Get all custom metadata key/value pairs for a file. REST API: GET /files/{uuid}/metadata/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "uuid": {
            "description": "File UUID.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "uuid"
        ],
        "type": "object"
      },
      "name": "uploadcare_get_file_metadata"
    },
    {
      "description": "Get info for a single file group by its id. REST API: GET /groups/{uuid}/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "uuid": {
            "description": "Group id in the form \"<uuid>~<count>\", e.g. \"badfc9f7-...~2\".",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "uuid"
        ],
        "type": "object"
      },
      "name": "uploadcare_get_group"
    },
    {
      "description": "Get project details: name, public key, collaborators, and whether autostore is enabled. REST API: GET /project/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "uploadcare_get_project"
    },
    {
      "description": "List files in the project (paginated envelope: next, previous, total, per_page, results). REST API: GET /files/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "from": {
            "description": "Pagination cursor taken from a previous response's `next` URL.",
            "type": "string"
          },
          "limit": {
            "description": "Files per page (max 1000). Default 100.",
            "exclusiveMinimum": 0,
            "maximum": 1000,
            "type": "integer"
          },
          "ordering": {
            "description": "Sort order, e.g. datetime_uploaded or -datetime_uploaded (descending).",
            "type": "string"
          },
          "removed": {
            "description": "Filter by removed status (true = removed, false = present).",
            "type": "boolean"
          },
          "stored": {
            "description": "Filter by stored status (true = stored, false = not stored).",
            "type": "boolean"
          }
        },
        "type": "object"
      },
      "name": "uploadcare_list_files"
    },
    {
      "description": "List file groups in the project (paginated envelope: next, previous, total, per_page, results). REST API: GET /groups/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "limit": {
            "description": "Groups per page (max 1000). Default 100.",
            "exclusiveMinimum": 0,
            "maximum": 1000,
            "type": "integer"
          },
          "ordering": {
            "description": "Sort order, e.g. datetime_created or -datetime_created (descending).",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "uploadcare_list_groups"
    },
    {
      "description": "List all webhook subscriptions configured for the project. REST API: GET /webhooks/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "uploadcare_list_webhooks"
    },
    {
      "description": "Marks a file as permanently stored (otherwise unstored files are deleted after 24h). Additive. REST API: PUT /files/{uuid}/storage/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "uuid": {
            "description": "File UUID to store.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "uuid"
        ],
        "type": "object"
      },
      "name": "uploadcare_store_file"
    },
    {
      "description": "Uploads a file into the project from a public URL (additive). Uses the Upload API host with the public key. Returns { type: \"token\", token } for async ingestion (poll separately) or the file info. Upload API: POST /from_url/.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "filename": {
            "description": "Override the stored filename.",
            "type": "string"
          },
          "source_url": {
            "description": "Public URL of the file to ingest.",
            "minLength": 1,
            "type": "string"
          },
          "store": {
            "description": "Store the file: \"1\" = store, \"0\" = don't store, \"auto\" = project default. Default \"auto\".",
            "enum": [
              "0",
              "1",
              "auto"
            ],
            "type": "string"
          }
        },
        "required": [
          "source_url"
        ],
        "type": "object"
      },
      "name": "uploadcare_upload_from_url"
    }
  ]
}

What the leaf hashes

{"body":"9ef0f5020633df56e189768998355d418060560bfcf8f46b73637f5ff043a6e3","id":301687,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793054221801363,"prev":null,"subject":"4d62e1fc-7ae6-4631-bf8b-cd85300b9d45","subject_kind":"endpoint"}

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. 0x877d78b3cf05871507a4c5376aec1763505cc35c321c8208f95e24732a9755de
2. 0xed974fb0f555d3d2ec01a0994132c9e6c1366fbf865fba1190fd581f9b92b0c2
3. 0xd5b440a5d5cf68abbdd644cabd9907d6e78013ac19b7816b664104a7132089ce
4. 0xfebca30df28bacc5bfb37eb0c96d4b83b8de5d23e5efd5f2401bbecf99cce270
5. 0x2c5228bcc2151136a1b082bc407949f71fc0ab3a60e58575c4ec80240c348fbc
6. 0xaf665900dda994fc87232a31e5ec02cfdd4ae4b41f6b32dc8c13b0c2b012c393
7. 0xe25366af2af274496ca41787eafb2c119ce9a251db42a02a5eb1561d64ea1966
8. 0xec5e8d8107df73a55b5645397c05edbd1f63c299281c6362a3438a21d64fc937
9. 0xf711b9b9e4c3b8926dcd8da66413d329b6436fc26d19d8021ba003e1303e5918
10. 0xe0e4a60716d95ec12c35a9b9e1bff1012120a026fa97f38064a594590f5c029f
11. 0xab0c5c1fde083e427b8955a771d679773808751fc069bed2944e88e84fcb655e
12. 0x099dd43573993f2a1bea674129b7ed050429a0ac76c3bfda8aaf82a3af126469
13. 0x49d11be052a4c069b10250aaba214f566b3f2e5aaa7a98e82ccc6a71c0e801a0
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae