Evidence row 294873

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Fetch a URL and return its current state: HTTP status, final URL after redirects, SHA-256 content hash, classification, readability score, title/meta-description, and wayback archive fallback if dead. Cached 10 minutes.",
      "inputSchema": {
        "properties": {
          "force_fresh": {
            "default": false,
            "type": "boolean"
          },
          "include_body_sample": {
            "default": false,
            "description": "If true, return first 1KB of body text.",
            "type": "boolean"
          },
          "max_bytes": {
            "default": 1500000,
            "maximum": 1500000,
            "minimum": 1024,
            "type": "integer"
          },
          "timeout_ms": {
            "default": 6000,
            "maximum": 15000,
            "minimum": 1000,
            "type": "integer"
          },
          "url": {
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "linkpulse_check"
    },
    {
      "description": "Classify content you already have (status code + content-type + body sample) without an outbound fetch. Useful if your agent already fetched the URL via another tool.",
      "inputSchema": {
        "properties": {
          "body_sample": {
            "type": "string"
          },
          "content_type": {
            "type": "string"
          },
          "status": {
            "type": "integer"
          }
        },
        "required": [
          "status",
          "content_type",
          "body_sample"
        ],
        "type": "object"
      },
      "name": "linkpulse_classify"
    },
    {
      "description": "Re-check a URL and tell you whether its content hash has changed since a previous hash you supply. Returns boolean + new hash.",
      "inputSchema": {
        "properties": {
          "previous_hash": {
            "type": "string"
          },
          "url": {
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url",
          "previous_hash"
        ],
        "type": "object"
      },
      "name": "linkpulse_diff"
    },
    {
      "description": "Resolve redirect chain for a URL without downloading the full body. Returns final URL + redirect count.",
      "inputSchema": {
        "properties": {
          "url": {
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "linkpulse_resolve"
    }
  ]
}

What the leaf hashes

{"body":"110aae135abcd48cfbd9f784183a112a716725d5af9408a67e949bb6790c5e9f","id":294873,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793050461702989,"prev":null,"subject":"e8a50485-d739-4ddc-88d7-181d2d2222fa","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. 0xc9670fae8f3777ad3c297fa49778796507418f24f7802c0fd0304907cef32cd3
2. 0x41638abee390b2d957b70d57d651656b6fdbcbde84fafaf4b152b84515278c89
3. 0x36084a74e3ca25971444663f893fd757bc3c676d8c687cffd4420f12cc12eb47
4. 0xb149bf76f43247e6f03baae6cd4c315a4498b807b5e29508897fa1fb51771ab6
5. 0x487a4b4e4abee68298391a91c7fc4e44fc8b7a2ea7b88a42fb27806ab768f0bd
6. 0xbb0202e904bf4da35a2b739dd74c41be9aed492a82e9ee8faf4b06114e0bfbc2
7. 0x1c40a3d70e6eee588097a2ef6f14d03c010a93da1d841558ff91ad58358111a8
8. 0x255e3653b29f1d3f38ea6a63c011b2be8e384400e8e4e5c80443655c0061fd17
9. 0x19371ac31dc54dd266460f6772fd154ff43f2492dbc49df948134b9503159020
10. 0xaf49c58b07f643adc422bcd56cf09b773ac862513c92c8ec09dac6240a88a8cc
11. 0xde080106ffe5b9071b2505ae31b17f7da4d3a9c7f4f4d9819f700d720702beeb
12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae