Evidence row 291827

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Load one free persona pack by slug. Returns the production system prompt, the character brief, and the style configuration. The pack is free and the text is MIT licensed.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "slug": {
            "description": "Persona slug, such as otis-code-reviewer.",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_persona"
    },
    {
      "description": "List free CastMyAgent persona packs. Optionally filter by department. Returns slug, name, role, department, a short summary, and the roster URL.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "department": {
            "description": "Optional department. Use a roster code such as ENGINEERING, or a label such as Engineering.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_personas"
    },
    {
      "description": "Find free persona packs by keyword. Matches the role and specialties.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "keyword": {
            "description": "Keyword matched against the role and specialties.",
            "type": "string"
          }
        },
        "required": [
          "keyword"
        ],
        "type": "object"
      },
      "name": "search_personas"
    }
  ]
}

What the leaf hashes

{"body":"d193cb2294a5b0be2932ad273a5ada51dd5f58b96f7fca9e92b5236ad3725dc4","id":291827,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793048353835568,"prev":null,"subject":"34be3463-5cc5-43d9-a630-867349e91754","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. 0x3e6f34a1d3b51e575f4740be2ac5e5803a4a09f9ed600ccb7beb86727d37f450
2. 0x3071ab21bc04d5433c33829fde683a9da6a56c1a461a05eaef386e1d28da5f26
3. 0x752b14aedd2ef730ae86b742e9e307b7f87aaf8e03104fa850882cca67d0bd63
4. 0x2afaa1ad2d39bea02ef475da32bf399789451b97fbcc2d39db0c19e0d693b7f0
5. 0xa2c6771fe300514ee52f3b5e67bd365a34b436f8ab957f2c71a14468fe8153b9
6. 0x0efb3e57e122c70b40de6fdbebc80dd85846c72f2ebd1b27a5481049760f2416
7. 0x2899255a1f0b1212961ffedc7936f22fc77681995259b37d5dce5523650ed529
8. 0x140e4daf5eec801b8dc692ffddeadb0bfc1a7c613c12e7f509ebfba9855fe36f
9. 0x3d4ea6620a9a3187c738107cb7e798de006b9fce6eaf571fb470ce6d29450bb8
10. 0x8e5649068bfe1600b5f38cb8d5f950b0cad91a024600039e3ba08f751258e697
11. 0xeff3ae4ccee9e9ab663bed39de24a2076950808876228a89701d6ab7f016bd7e
12. 0x1afc0318a98c6dbb5a80e5cb86eba22b844e3f3b185a16f17290e29ab7410f55
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae