Evidence row 303644

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Base64-encode or decode a string.",
      "inputSchema": {
        "properties": {
          "op": {
            "enum": [
              "encode",
              "decode"
            ],
            "type": "string"
          },
          "text": {
            "type": "string"
          }
        },
        "required": [
          "text",
          "op"
        ],
        "type": "object"
      },
      "name": "b64"
    },
    {
      "description": "Convert text to camelCase, snake_case, kebab-case, PascalCase, UPPER, lower or Title.",
      "inputSchema": {
        "properties": {
          "text": {
            "type": "string"
          },
          "to": {
            "enum": [
              "camel",
              "snake",
              "kebab",
              "pascal",
              "upper",
              "lower",
              "title"
            ],
            "type": "string"
          }
        },
        "required": [
          "text",
          "to"
        ],
        "type": "object"
      },
      "name": "case"
    },
    {
      "description": "Mint a free API key for this server's HTTP API (500 calls/day, no signup). Optional email for usage stats. Pass the key as ?key= on any HTTP endpoint.",
      "inputSchema": {
        "properties": {
          "email": {
            "description": "Optional contact email",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_api_key"
    },
    {
      "description": "MD5 / SHA-1 / SHA-256 / SHA-512 hex digest of a string.",
      "inputSchema": {
        "properties": {
          "algo": {
            "default": "sha256",
            "enum": [
              "md5",
              "sha1",
              "sha256",
              "sha512"
            ],
            "type": "string"
          },
          "text": {
            "type": "string"
          }
        },
        "required": [
          "text"
        ],
        "type": "object"
      },
      "name": "hash"
    },
    {
      "description": "Convert text to a clean, URL-safe slug (unicode/accent aware).",
      "inputSchema": {
        "properties": {
          "text": {
            "description": "Text to slugify",
            "type": "string"
          }
        },
        "required": [
          "text"
        ],
        "type": "object"
      },
      "name": "slug"
    },
    {
      "description": "Convert ISO-8601 timestamp to Unix, or Unix to ISO-8601.",
      "inputSchema": {
        "properties": {
          "iso": {
            "description": "ISO-8601 timestamp, e.g. 2026-10-20T20:00:00Z",
            "type": "string"
          },
          "unix": {
            "description": "Unix seconds to convert to ISO",
            "type": "number"
          }
        },
        "type": "object"
      },
      "name": "ts"
    },
    {
      "description": "Generate 1-50 random v4 UUIDs.",
      "inputSchema": {
        "properties": {
          "n": {
            "default": 1,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "uuid"
    }
  ]
}

What the leaf hashes

{"body":"a5dc07e905e943c5ac16c6ceadf88861712e7818d7c8d1bd4f9cdaa499ac3b5b","id":303644,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793055440427200,"prev":null,"subject":"543ed18f-0aa7-4a6a-910b-8c72c1b9c259","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. 0x563a801f5b465e838c25d17088ee338dbfca7df66f6759a50c8bf436bf2d6754
2. 0x5351c841c81745dabac0a33ce7755cf02dc8200cc4378c8351ed718c9aa2bd5f
3. 0x94dbe032e9a6247ba32875fb7f28247e9143174de54a148ef39e7868dd500546
4. 0x24439549b3c5ee9e15a1e592dece1b657ffe21ce7ac0cae8f80ba4c9def03c9c
5. 0xb39813adb1ea0454c0a2355de76f8918e1f6a6d8f166fa2394d3ee09bb75d292
6. 0x8d0cccf4c297e964d358d0b5e45de3265bc1f3010a43d36a9453f2fba9d34f5e
7. 0x51ef3a6c39a7cfc044d8ee610d85383eb74b7c8dddd9ae307da57afcd28119eb
8. 0x8e238d6bb9fe2f86693fd1a13ea8968ce4a6e1beac095291e5b4c7ccff6a9e51
9. 0x17570ddc8746e95aa55363c9245282d4d222499a7feb4a3f90c49493b98040fa
10. 0x110be28c9460fde9da5777e67d467b9565876e6ebc73c8245c5d1e989797387f
11. 0x014e6ac2bd09cb47ef261fa8d56392362b98c9b103bb1037674237d3604f081f
12. 0x31b890f57b06aeb1ca9fb0cdc688bb75678ab9b2ff8ba49765e3d7bc0ae98597
13. 0x8ba3430866b4c11cea7eba9923ee4fa8a5074849df417006e4441426c1f13056
14. 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae