Evidence row 571599

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Calendar reminder for the last safe day to cancel. Returns a calendar file (.ics) with an all-day event on the cancel-by day, the steps and the official link, with alerts at 9am the day before and 9am on the day. Nothing is stored. get_cancel_steps gives this link as add_to_calendar whenever renews_on is given and the day hasn't passed.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Two-letter country code. GB (or UK) gives UK pages, UK notice rules and uk_rules; defaults to the caller's country, else US.",
            "type": "string"
          },
          "renews_on": {
            "description": "Next renewal or billing date, YYYY-MM-DD.",
            "format": "date",
            "type": "string"
          },
          "service": {
            "description": "The subscription, as for get_cancel_steps.",
            "type": "string"
          }
        },
        "required": [
          "service",
          "renews_on"
        ],
        "type": "object"
      },
      "name": "get_cancel_reminder"
    },
    {
      "description": "How to cancel one subscription. For requests like \"how do I cancel Netflix?\", \"cancel my Planet Fitness membership\", \"how do I leave Sky?\", \"cancel my PureGym\", \"what's the cheapest way to keep Spotify?\", \"stop my Audible\". Returns the official page, steps, catches and a cheaper option. UK answers add region (\"UK\") and uk_rules; a US-only service asked about from the UK has region \"US only\".",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Two-letter country code. GB (or UK) gives UK pages, UK notice rules and uk_rules; defaults to the caller's country, else US.",
            "type": "string"
          },
          "renews_on": {
            "description": "Next renewal or billing date (or next delivery for meal kits), YYYY-MM-DD. Adds cancel_by: the last safe day to cancel using the service's own notice rule, or a day early where it has none, and add_to_calendar: a link to a calendar reminder for that day.",
            "format": "date",
            "type": "string"
          },
          "service": {
            "description": "The subscription's name in everyday words, up to 80 characters.",
            "type": "string"
          }
        },
        "required": [
          "service"
        ],
        "type": "object"
      },
      "name": "get_cancel_steps"
    },
    {
      "description": "Which subscription is this charge? For requests like \"what is this APPLE.COM/BILL charge?\", \"I see AMZN Digital on my statement\", \"what is DD *DOORDASH DASHPASS?\". Returns the likely service, or for Apple, Amazon, Google and Microsoft the few it could be and where to check, or match: purchase when it looks like a one-off order (marketplace, a ride, a restaurant through a delivery app). Then call get_cancel_steps.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "text": {
            "description": "The charge as it appears on the statement, up to 120 characters.",
            "type": "string"
          }
        },
        "required": [
          "text"
        ],
        "type": "object"
      },
      "name": "identify_charge"
    },
    {
      "description": "Every subscription Cancel My Sub covers. For requests like \"which subscriptions can you help me cancel?\" or \"what gyms do you know?\". Also returns the current status of the FTC click-to-cancel rule and the UK rules (uk_rules)",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category: streaming, music, membership, gym, news, meal kit, software, app store, dating, wellness, home security, phone and internet, tv and broadband.",
            "type": "string"
          },
          "country": {
            "description": "Two-letter country code. GB (or UK) leaves out US-only services; defaults to the caller's country, else US.",
            "type": "string"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "list_services"
    }
  ]
}

What the leaf hashes

{"body":"3bd4f1d02189211ff239fc36ba8669b8c241f538c58b8d2293f9a8e72195ec64","id":571599,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793140314678843,"prev":null,"subject":"f8f373d0-4dfe-440c-bb97-3dee81f31cac","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. 0xc4fc67703512fbd0d45ad48c36e5517c68243ce568d467b21c40eba9f3ad4b4a
2. 0xefa064fecbd6f5ce9f31dbb5efa0b3ff95aa3c689b8185761324c6c0a046b828
3. 0x8368f360604a79e93748aafb114fb2751715c78089dde4878aec6896ce8db12c
4. 0x0d6fb6b62c0d7fca2d1d07e428b3eaa7c4ef789caec7b86b66856ccc11328e80
5. 0x85fc54e2bca2f9e9dffe5539ee4001ba01c027bf339d218b0a0d2aa1c56e4f94
6. 0x869b0db9341572f8c9b33edb4b31fc6c9bb8048a67fd554cd0b1f15b0a41d22c
7. 0x720d0f75edc6568daa7c73b7e371c89c55cb150773f5107e11566cbd42b5d97e
8. 0x25b24c0b3f31f50f7c37a0c215391dabdb68bfe5965c93014d3ff67aca3dc98b
9. 0xa6ec063406a9ef99206325ec105286cdd2a9901b002231dd85e7927b9590a58a
10. 0x8146a517146b86a75519653f38e4a0ea7ee73e59d3e8dfc4b94a1352c4aec5f4
11. 0x9d79c109b429ce5375001cf2e916267ca09b43dfbad2a069e99583f56986b4e3
12. 0xee8734682e9314905d7abd2575a48cec1c4d752265d2b88ce346211a72684543
13. 0x72d49c3472216d5e76117068ea9a2a5f617bdb2ffda241f677ce8098a0219dfc
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4