Evidence row 571798

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Books like one the user enjoyed, or for a genre. For requests like \"books like The Martian\" or \"a good cosy mystery\". Suggestions are English-language books for the same readers (picture book, children, young adult or adult), one per author and one per series. Well-read books of the same kind come first (picked_from: shelf, and because names the kind, for example \"celebrated dystopian novels\"), then books sharing specific subjects on Open Library (picked_from: subjects, and because lists the shared subjects). Novels never get self-help, textbooks, anthologies, study guides, category romance lines or explicit books as suggestions, and popular books are preferred over obscure ones. Other books by the same author are left out unless same_author=true. Give title or subject; common other titles work (1984, The Sorcerer's Stone)",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "author": {
            "description": "The author's name, to pin down the right book or list their books.",
            "type": "string"
          },
          "country": {
            "description": "Two-letter country code for the shop links, for example US or GB.",
            "type": "string"
          },
          "same_author": {
            "description": "True to include more books by the same author.",
            "type": "boolean"
          },
          "subject": {
            "description": "A genre or theme, for example space opera, cozy mystery, heist.",
            "type": "string"
          },
          "title": {
            "description": "A book the user liked, 2 to 120 characters.",
            "type": "string"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "find_similar_books"
    },
    {
      "description": "An author's books, newest first. For requests like \"what has Andy Weir written?\" or \"Sally Rooney's books\"",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "author": {
            "description": "The author's name, to pin down the right book or list their books.",
            "type": "string"
          },
          "country": {
            "description": "For buy links: US, GB, IE, CA, AU. Default from the request.",
            "type": "string"
          }
        },
        "required": [
          "author"
        ],
        "type": "object"
      },
      "name": "get_author_books"
    },
    {
      "description": "A book's details and any film or series made from it. For requests like \"tell me about Project Hail Mary\", \"is The Name of the Wind being made into a film?\", \"how long is Dune?\". Misspellings are fine. If screen_checked is false, the film and TV check could not run just now, so the film and TV status is unknown.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "author": {
            "description": "The author's name, to pin down the right book or list their books.",
            "type": "string"
          },
          "country": {
            "description": "For buy links: US, GB, IE, CA, AU. Default from the request.",
            "type": "string"
          },
          "title": {
            "description": "The book's title, 2 to 120 characters. Add author for very short or common titles.",
            "type": "string"
          }
        },
        "required": [
          "title"
        ],
        "type": "object"
      },
      "name": "get_book"
    }
  ]
}

What the leaf hashes

{"body":"eb624b7a6993f327a76abfee185a1cbddb4b0a50ed71b9a816b7a686b0551184","id":571798,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793140427201218,"prev":null,"subject":"c165d138-7ab5-42e6-85e9-182537604c59","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xc1621b43d9aa256d10a002bf12d5e9473aa29a0f2e225a5881b5dd3634a9554f
2. 0x89997f46eb7244c6f1f85e1f811818c130df633d5e5e81d7b3a83ad9d44b8fe9
3. 0x59fd74cae19aad429d865b3cb919d70dfe02aefc3daa975db627fad8b1670e6c
4. 0x14258db3e2282b26ea509e3e6c682c609c706921847d4ed4af74e330480eac68
5. 0xb8d1099442ca7dc47218768f4b35ddc97ae1779f7ce1aa3ac93cc29682408ad3
6. 0x752d5baf6f5487f69110efdb0ad31b3560eb9051e5554a5a631b342ed83a767d
7. 0xdd40799f278d8138db48ccb78023a054a618407a57626bdc16f2c404652139d4
8. 0x68a671d7dfccc459b59a92cfb5f3e8779e17f76fed5683d292d940f52a73414a
9. 0x541a393926f1ac9763f10e22d98d781509fd82f0510ca816b28bd2cfc146941e
10. 0x4ad2073b6d060aec55c09d199990b7db63b4239e653699d60c64726663e6c134
11. 0x5a13fca65d8a7a99a0b9f7a1e93e4c0383a76a0fdbe04d70632715947f716ff4
12. 0xf60d24675361c4e691254e637b8ecddfc4470b91e0ce8ab4c088e46b7460f7f1
13. 0xb48b088603004f0a5232faea4acd65999cbb4832f4c15b0098e853144cb91655
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4