Evidence row 568100

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Checks the SPF, DKIM and DMARC DNS records of an email domain and explains what to fix so that emails do not land in spam (Gmail and Yahoo sender requirements). Read-only DNS lookups.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "domain": {
            "description": "Domain or email address, e.g. mon-entreprise.fr",
            "maxLength": 300,
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "check_email_domain"
    },
    {
      "description": "Builds a professional HTML email signature (tables and inline styles, compatible with Gmail, Outlook, Apple Mail and Thunderbird) from the user's details. Returns the HTML, how to install it, and, if a profession is given, the legal mentions it requires in France.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "accentColor": {
            "description": "Hex color for the name and links, e.g. #0f766e",
            "pattern": "^#[0-9a-fA-F]{6}$",
            "type": "string"
          },
          "agendaUrl": {
            "description": "Booking link (Calendly, Google Agenda...)",
            "maxLength": 300,
            "type": "string"
          },
          "city": {
            "maxLength": 80,
            "type": "string"
          },
          "company": {
            "maxLength": 100,
            "type": "string"
          },
          "email": {
            "maxLength": 200,
            "type": "string"
          },
          "facebook": {
            "maxLength": 200,
            "type": "string"
          },
          "firstName": {
            "description": "First name",
            "maxLength": 60,
            "minLength": 1,
            "type": "string"
          },
          "font": {
            "description": "Web-safe font",
            "enum": [
              "Arial",
              "Helvetica",
              "Verdana",
              "Tahoma",
              "Trebuchet MS",
              "Georgia",
              "Times New Roman"
            ],
            "type": "string"
          },
          "imageSize": {
            "enum": [
              "small",
              "medium",
              "large"
            ],
            "type": "string"
          },
          "includeBranding": {
            "description": "Adds a discreet \"Signature créée avec SignaMail\" line (default true, the user may remove it)",
            "type": "boolean"
          },
          "instagram": {
            "maxLength": 200,
            "type": "string"
          },
          "jobTitle": {
            "maxLength": 100,
            "type": "string"
          },
          "lastName": {
            "description": "Last name",
            "maxLength": 60,
            "minLength": 1,
            "type": "string"
          },
          "legalText": {
            "description": "Small print under the signature: legal form, SIRET, regulated mentions",
            "maxLength": 600,
            "type": "string"
          },
          "linkedin": {
            "maxLength": 200,
            "type": "string"
          },
          "logoUrl": {
            "description": "https URL of the company logo (PNG or JPEG). Ignored if not https",
            "maxLength": 500,
            "type": "string"
          },
          "mobile": {
            "maxLength": 40,
            "type": "string"
          },
          "phone": {
            "description": "Landline, French format accepted (01 23 45 67 89)",
            "maxLength": 40,
            "type": "string"
          },
          "photoUrl": {
            "description": "https URL of a square portrait photo. Ignored if not https",
            "maxLength": 500,
            "type": "string"
          },
          "postalCode": {
            "maxLength": 20,
            "type": "string"
          },
          "profession": {
            "description": "Optional profession slug from list_professions: the answer then includes the mentions required for it",
            "type": "string"
          },
          "street": {
            "maxLength": 150,
            "type": "string"
          },
          "twitter": {
            "maxLength": 200,
            "type": "string"
          },
          "website": {
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "firstName",
          "lastName"
        ],
        "type": "object"
      },
      "name": "generate_email_signature"
    },
    {
      "description": "Step-by-step instructions (French UI labels) to install an HTML email signature in a given mail client.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "client": {
            "enum": [
              "gmail",
              "outlook-web",
              "outlook-classic",
              "outlook-mac",
              "apple-mail",
              "iphone",
              "thunderbird"
            ],
            "type": "string"
          }
        },
        "required": [
          "client"
        ],
        "type": "object"
      },
      "name": "get_install_instructions"
    },
    {
      "description": "Returns what a French professional must, should and must not put in an email signature for a given profession (mandatory mentions, recommended ones, mentions to avoid), with tips, common mistakes and official sources.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "profession": {
            "description": "Slug from list_professions, e.g. \"avocat\"",
            "type": "string"
          }
        },
        "required": [
          "profession"
        ],
        "type": "object"
      },
      "name": "get_profession_signature_rules"
    },
    {
      "description": "SignaMail plans and prices (excluding VAT), what each includes and how to sign up. Use it when the user needs signatures for a team or a digital business card.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_signamail_plans"
    },
    {
      "description": "Lists the professions (France) for which SignaMail documents the mentions required in an email signature: lawyer, real estate agent, doctor, accountant, craftsman, sole trader... Use a slug with get_profession_signature_rules or generate_email_signature.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_professions"
    }
  ]
}

What the leaf hashes

{"body":"2cbec7f67fd2f8e4e2c98082e645f9f11a79bd1ca471fc8573cd89b5ab12440f","id":568100,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138927069234,"prev":null,"subject":"3efbd4f0-99c6-4e17-b22e-04745778f450","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. 0xc1d6133b087e1a21e22a02c064d3d0be12b89bc87748e65c0302d5e25f15efcc
2. 0x629a9514df45eda69700f07cb0f388d62ea58f31384d72fd1eb34cc4a10f0574
3. 0x69ed86325f868b2fff9394959985822d5001537ee17a505181e42d0e891271ad
4. 0xa474a0cc6a3b8e39a92cbba7f713d6371bca478636751f1407955da7f3f7fb1d
5. 0x807d60443cc2c1d6b3a80d1e4d482334900c552c32e646e782218c75f650ddbd
6. 0x342cb118f467298d476b7bcda9f9bff9e2b643fc5a2d818eb79026fae2a1bb42
7. 0x42b9155cb9abf85e5819069a1c2cf023993392713e8ccbe07016cbbacead3394
8. 0xa448116d9bced576b1443896960355b2349f506a4940c8eacc395f2aca0db006
9. 0x43811e56383620534275d91652470ee8b4cae9fd8eef4611a8adae5007ead9af
10. 0x603e5d7d552008939814da11386784fe82a74a23617e6ed24fbe3fa47ea3d596
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