Evidence row 302641

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Sign in to b59.link to raise the rate limit from 2 to 300 requests/minute and own what you create. Pass api_key to get a session key straight away. Or pass email to have a 6-digit code emailed, then call again with email and otp to get a session key (new emails are signed up and also get their api_key). Send the session key as the HTTP header 'Authorization: Bearer <session_key>'.",
      "inputSchema": {
        "properties": {
          "api_key": {
            "description": "The account's 256-character API key.",
            "type": "string"
          },
          "email": {
            "description": "Email to send a one-time code to.",
            "type": "string"
          },
          "otp": {
            "description": "The 6-digit code from the email.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "auth"
    },
    {
      "description": "Create a free page-view tracker for a website. Returns the tag image URL and ready-to-paste snippets for the site's pages, plus the stats URL where views, visitors, pages and referrers are shown. When signed in, the tracker belongs to the account; otherwise keep the manage_token to claim it later.",
      "inputSchema": {
        "properties": {
          "name": {
            "description": "Optional display name for the tracker.",
            "type": "string"
          },
          "site_url": {
            "description": "The site's address, e.g. example.com. Views are only counted on this domain and its subdomains.",
            "type": "string"
          }
        },
        "required": [
          "site_url"
        ],
        "type": "object"
      },
      "name": "create_tracker"
    },
    {
      "description": "Generate a trackable QR code for a URL. Creates a b59.link short URL at the same time so scans are counted. Returns the short URL, a stats URL, and the QR code as a base64-encoded PNG.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "The URL to generate a QR code for.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "generate_qr"
    },
    {
      "description": "Get the stats page URL for anything b59.link tracks: a slug or short URL, the destination URL of a short link or QR code, a tracker id or tag URL, or any page URL / domain that has a tracker tag. Stats themselves are viewed on b59.link; this returns where.",
      "inputSchema": {
        "properties": {
          "identifier": {
            "description": "Slug, short URL, page URL, domain, tracker id or tag URL.",
            "type": "string"
          }
        },
        "required": [
          "identifier"
        ],
        "type": "object"
      },
      "name": "get_stats_url"
    },
    {
      "description": "Check whether a URL already has a b59.link short URL. Handles variations: http/https, www prefix, trailing slash. Returns the existing short URL and QR code if found.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "The URL to look up.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "lookup_url"
    },
    {
      "description": "Make a QR code image for any text (URL, Wi-Fi string, phone, email, plain text) without creating a short link. Supports colors, size and SVG. Returns the image plus a permanent image URL that can be embedded with <img src>. Use generate_qr instead when scans should be counted.",
      "inputSchema": {
        "properties": {
          "bg": {
            "description": "Background hex color, e.g. ffffff.",
            "type": "string"
          },
          "data": {
            "description": "Text to encode (max 1500 chars).",
            "type": "string"
          },
          "fg": {
            "description": "Foreground hex color, e.g. 000000.",
            "type": "string"
          },
          "format": {
            "description": "Image format (default png).",
            "enum": [
              "png",
              "svg"
            ],
            "type": "string"
          },
          "size": {
            "description": "Width/height in pixels, 64-1200 (default 300).",
            "type": "integer"
          }
        },
        "required": [
          "data"
        ],
        "type": "object"
      },
      "name": "make_qr_image"
    },
    {
      "description": "Shorten a long URL and get a memorable b59.link short URL. Optionally specify a custom slug. Returns the short URL and a stats URL.",
      "inputSchema": {
        "properties": {
          "slug": {
            "description": "Optional custom slug (letters, digits, hyphens, underscores, max 100 chars). A random slug is used if omitted.",
            "type": "string"
          },
          "url": {
            "description": "The URL to shorten.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "shorten_url"
    }
  ]
}

What the leaf hashes

{"body":"df2dcacd9d0e7b0363b159f84e0720febe5a252fe56ba1b5c48914764bfb9a05","id":302641,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793054866316352,"prev":null,"subject":"e32cfd91-4d03-4be2-8a0b-401ba69783d2","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. 0xbbe157e120b881bb954e43dd772afdf9c3ff96932f721718096f7fa7c5ef5973
2. 0xe617402c56f60a2de641eab3190346ba7a4c70b1e95ce1ec167eb2a14a850518
3. 0x188b6de9e97587f2f7b6caa859298ad406d7e88eb1431d86d05725f4b01cad90
4. 0xf3bc37e60025c1273b830bcadb1517ece1222fa59f7e609ccaceb9a6962b9b6c
5. 0xcdf68871f9cb5b99c67bb656bca6b0a893776cf06999647edca0d185bcde2664
6. 0xe5f1798c170aa60eafcdb448fc91fdd3bff3dd96cfa0318bfbba4bbf2be7999f
7. 0x0dad76b1e6794b7d819d5a30cb0ec3292454804bea46fdde62cd288303c290b6
8. 0x50e2b056bc67c4880b8eed5798035aac8209488f2ccd3e8e124adaad244409d8
9. 0x845e693323af85635cb326d470d8d418882858c3ef2b40b0d6d7903ca18b8db1
10. 0xff2d4f941fd0a20bb13feaaab2cfa12f33654e2b0ed185cce0c62986dd52c038
11. 0x66ed746e8b7893417ecf36cd9e7178eac8d5a36914238191ee21e14d3aa57d8d
12. 0x571bf2cc487a35d2ef7662b375d1fa9179fe0f6cab6f6cebdb1a6113d25f3c92
13. 0xd5b5bb5812612371a70171b2252d90e95bb0581ea5a3be198122adc8442e4f79
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae