Evidence row 586857

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Free public discovery. Use {\"view\":\"tasks\",\"task\":\"exact_historical_evidence\",\"subject\":\"postgresql\"} to choose by historical task and held output, or {\"view\":\"summary\",\"limit\":64} for the short offer index. Read {\"product_id\":\"<exact listed ID>\"} alone for the public contract before advertised selectors or a quote. Omitting view/product_id preserves the full catalogue, default3 and limit1..64/next_cursor. Zero task cards is not zero vulnerabilities; a summary or schema enum is not MATCH or current applicability.",
      "inputSchema": {
        "additionalProperties": false,
        "allOf": [
          {
            "not": {
              "required": [
                "product_id",
                "view"
              ]
            }
          },
          {
            "not": {
              "required": [
                "product_id",
                "limit"
              ]
            }
          },
          {
            "not": {
              "required": [
                "product_id",
                "cursor"
              ]
            }
          },
          {
            "not": {
              "required": [
                "product_id",
                "task"
              ]
            }
          },
          {
            "not": {
              "required": [
                "product_id",
                "subject"
              ]
            }
          },
          {
            "if": {
              "not": {
                "required": [
                  "product_id"
                ]
              }
            },
            "then": {
              "properties": {
                "limit": {
                  "default": 3
                }
              }
            }
          },
          {
            "if": {
              "required": [
                "task"
              ]
            },
            "then": {
              "properties": {
                "view": {
                  "const": "tasks"
                }
              },
              "required": [
                "view"
              ]
            }
          },
          {
            "if": {
              "required": [
                "subject"
              ]
            },
            "then": {
              "properties": {
                "view": {
                  "const": "tasks"
                }
              },
              "required": [
                "view"
              ]
            }
          }
        ],
        "properties": {
          "cursor": {
            "maxLength": 256,
            "type": "string"
          },
          "limit": {
            "maximum": 64,
            "minimum": 1,
            "type": "integer"
          },
          "product_id": {
            "maxLength": 160,
            "minLength": 1,
            "type": "string"
          },
          "subject": {
            "enum": [
              "apache_httpd",
              "cert_fr",
              "cisa_kev",
              "cpython",
              "go",
              "multi_source_cve",
              "postgresql"
            ],
            "type": "string"
          },
          "task": {
            "enum": [
              "correction_group_dossier",
              "declared_version_conditions",
              "exact_historical_evidence",
              "historical_comparison",
              "historical_support_end"
            ],
            "type": "string"
          },
          "view": {
            "enum": [
              "summary",
              "tasks"
            ],
            "type": "string"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "foundry_products"
    },
    {
      "description": "Buy a configured public product by product_id and its exact business body. Generic clients receive a payment challenge; paying requires an external authorized client.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "body": {
            "type": "object"
          },
          "product_id": {
            "maxLength": 256,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "product_id",
          "body"
        ],
        "type": "object"
      },
      "name": "foundry_purchase"
    },
    {
      "description": "Read/recover this exact original purchase through existing HTTP READ authentication. Never signs or settles. Supply cursor for an existing result page.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "authorization_id": {
            "pattern": "^x402_auth_[a-f0-9]{64}$",
            "type": "string"
          },
          "cursor": {
            "maxLength": 8192,
            "minLength": 1,
            "type": "string"
          },
          "original_request": {
            "type": "object"
          }
        },
        "required": [
          "authorization_id",
          "original_request"
        ],
        "type": "object"
      },
      "name": "foundry_purchase_read"
    },
    {
      "description": "Discover exact held historical request parameters for a currently configured listed product. Free, no payment or purchased evidence; use next_cursor and exact filters. Currentness remains UNKNOWN.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "cursor": {
            "maxLength": 256,
            "minLength": 1,
            "type": "string"
          },
          "filters": {
            "additionalProperties": false,
            "properties": {
              "after_observation_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "before_observation_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "cve_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "module": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "native_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "native_schema_version": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "record_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              },
              "snapshot_id": {
                "maxLength": 1024,
                "minLength": 1,
                "type": "string"
              }
            },
            "type": "object"
          },
          "limit": {
            "default": 3,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "product_id": {
            "maxLength": 160,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "foundry_selectors"
    }
  ]
}

What the leaf hashes

{"body":"dc91caff9fbbd0e717f2c4981728ddcc4525c127d587a6c52b88babfff50faa1","id":586857,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793147745945836,"prev":null,"subject":"933cc3c5-897b-45a5-b8c3-85cd8a11dac2","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. 0x8187a71e3766a5b34eeeda3b20c56b65cd0b89cc682daa5cbae726feeefa9ae1
2. 0x322fa7402db7bb767d8159b9e7e22bf36c1d0eda06b405ef10940b721b613a88
3. 0xb752ca2041621f12cc07f992ead0fe5f06e81f6ef0a7e1ad993a86e703d39c85
4. 0xa59b27c0bc3184568ff01a7977ccf242ed6e76eedfd35e7deea50f36b821513f
5. 0xe8baf5375fa201dacc379dde5db7774b9bded95e2cea7869f6f2b3ec97187ca7
6. 0xd6da3908c6aecd0c4112005bc4e31d027bd9a065a2f0716705eecffe3d6a59dc
7. 0x347b60e2f945830c01259d5f7913d8512947c72a8e8bcb51bbccce3c726d4dec
8. 0x277a64709bc5c1f6177999d80567d332037df0016442403207b729cee99b2f91
9. 0x1759231ef3600d9a22537baa3f71dfcf6b3e73b48e347f7e6a31f354784a3950
10. 0x8f84b6c1e9898de772beb510b34279ccde91371485c5c103a8db799939c9cc75
11. 0xd7c926044bd985b94f31a90f39dc96fa7bb0648c99f5b0dab6c48b680b4ed1ef
12. 0xd773e62e3fa245dfab9c30947560cc156240e587db3cb1b87c317110ed74b8e0
13. 0xf1b08e19add97f7d3b5db1ce7ce9b5c26cbfa721b2974dc0ed5c92e3949de6e8
14. 0x91b395e5953edc1b4bb2db979b59b2d9a20f0df47d841196dccdb5128537aaaa
15. 0xe2f9c120d14f36fdddf9b4e605c5d0b8a13b835e2380472255dc22e14b93e84e
16. 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae