Evidence row 766045

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Connector-style fetch of one press release by the id from search. Same summary as get_release.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "Release slug from search",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "fetch"
    },
    {
      "description": "One published press release by slug (the last part of its URL) or by its full courierpr.com URL: title, company, category, dateline, date, the opening 120 words and a link to the full release. Use it after a search or list result when the user wants more on one item. Limitation: returns a summary, not the full text; media contact details are never included and are on the page behind a human check.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "Release slug, e.g. acme-raises-series-b, or the full release URL",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_release"
    },
    {
      "description": "What filing a release on CourierPR involves: what is accepted (the press code) and the links to file, for agencies and for journalists. Use it when the user asks how to publish or distribute a press release. Returns links only; it does not file anything.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "required": [],
        "type": "object"
      },
      "name": "how_to_file"
    },
    {
      "description": "The newest published press releases, optionally within one desk or one category. Use it for 'what is new in tech', 'latest funding announcements', 'recent releases on CourierPR'. Each result is a title, company, date, short summary and a link; the full text is on the linked page. Limitation: at most 10 per call, newest first, no date filter.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category slug or name from list_desks, e.g. business-finance. Takes precedence over desk.",
            "type": "string"
          },
          "desk": {
            "description": "Desk slug or name from list_desks, e.g. science-tech",
            "type": "string"
          },
          "limit": {
            "default": 8,
            "description": "How many to return",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "latest_releases"
    },
    {
      "description": "The six newsroom desks and the twenty categories under them, with slugs and links. Use it to resolve a topic the user named ('tech', 'health') into a desk or category before calling latest_releases. Returns no releases.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "required": [],
        "type": "object"
      },
      "name": "list_desks"
    },
    {
      "description": "Connector-style search over published press releases. Returns ids for fetch. Prefer search_releases when you can filter by category.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "query": {
            "description": "Words to search for",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    },
    {
      "description": "Full-text search over every published press release (title and body), optionally within one category. Use it when the user names a company, product, person or topic. Returns short summaries with links; the full text is on the linked page. Limitation: English full-text matching, at most 10 results, no date filter.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category slug or name from list_desks",
            "type": "string"
          },
          "limit": {
            "default": 8,
            "description": "How many to return",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Words to search for; quotes and minus work like a search engine",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_releases"
    }
  ]
}

What the leaf hashes

{"body":"23a52edb1ad316e2f4b1b1956e3f8f2d20fbba3e8a9f2a6292e08a1f0acfeb86","id":766045,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793179386394888,"prev":null,"subject":"c4221f59-25f1-4c89-adb9-15f79a380cae","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x6784c8bc3b98d6d638dbeb70dd20a0537f0ec8dc73a96d85c752de32fb0d1018
2. 0xf97ffd661e3d87a45b9cb6df8fa70d6dfe5002649b157417fe21eb0c89a9106d
3. 0xa7aaa48b41d90a4d31ef0d604461d2126eff547efe1cb9bd9c1a6c7f1aa88d05
4. 0x3a1b383024b411295def7e8e0ca463bad1ce595befdd55793e27445496942910
5. 0xf801297ecf295a1472420c1ca91e31bdaa8471e225cb5b87952b7de238396f96
6. 0x777732f50d0b674e31a96857d1a8e9c8b98c0bf940ef4188c5fb91fbcba1d1fa
7. 0x4aa852c3f36c8d69fc2504e52d418c5ec641ee071c2e4ab16ed1535bf605cc43
8. 0x1b5eeb621691287cbfc50a1f6e948975a30eebdf32f9976d1195692d216d3e12
9. 0x8937337378642c7c5d0817754cdb26ab48df350e07b4ff78ebdc3acd322a9c0b
10. 0x51e2b46468735e2e483f04dedd969f1b56e404cd86fcfcec27e1c8d9dc23ed89
11. 0x5c2f568c73887cdfff6451c99a7768fc09d8d51a6d3d9f478617c596f7ff2116
12. 0x936c51422bf9379f2c8af54a2b63b4b73e4ce7a148d72b227df49214539e17c2
13. 0xc62ea618517c23fad9d7fd6ad52434f086d88cb28c9eeb4e698664b2137cd107
14. 0x9629b9515160844aacc33a6aff292bbb444ac65e0d773f2fa899885c3481fa54
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae