Evidence row 572250

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Calendar arithmetic for Medicare Advantage appeal deadlines. Give notice_date (the date printed on the plan’s denial notice) for the plan reconsideration deadline: 65 days from that date (the rule is 60 days from receipt, presumed 5 days after the date). Or give care_end_date (the date covered skilled nursing, home health or outpatient rehab care ends, on the Notice of Medicare Non-Coverage) for the fast appeal: by noon the day before. The notice’s own instructions come first.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "care_end_date": {
            "description": "The date covered care ends, from the Notice of Medicare Non-Coverage, YYYY-MM-DD.",
            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
            "type": "string"
          },
          "notice_date": {
            "description": "The date printed on the denial notice, YYYY-MM-DD.",
            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "appeal_deadline"
    },
    {
      "description": "How Claim Back helps with a Medicare Advantage appeal, and what it costs: a free check of the denial letter, then two fixed-price services (we handle it for you, paid only if the decision is reversed; or we prepare it and you send it). It also says what Claim Back offers for a long-term care insurance claim denial. Returns the link where the user uploads their letter. Use it when the user wants help with an appeal or asks about Claim Back.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "claim_back_services"
    },
    {
      "description": "Lists Claim Back’s guides (US), each with its slug, title, one-line summary and link. Medicare Advantage: how to appeal and who can ask, the appeal deadline, the fast appeal when care is ending, and the independent review. Long-term care insurance: what to do after a denial, and the independent review of benefit-trigger denials state by state. Use it to find the guide that answers the user’s question, then read_guide.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_guides"
    },
    {
      "description": "Returns one guide in full as Markdown, with its sources (federal and state regulations, Medicare.gov, CMS and state insurance departments). Use it to answer questions about Medicare Advantage appeals and long-term care insurance claim denials accurately, and link the guide in the answer.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "The guide’s slug, from list_guides.",
            "enum": [
              "appeal-a-medicare-advantage-denial",
              "medicare-advantage-appeal-deadline",
              "care-ending-fast-appeal",
              "independent-review",
              "denied-long-term-care-insurance-claim",
              "long-term-care-independent-review"
            ],
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "read_guide"
    }
  ]
}

What the leaf hashes

{"body":"0b81db4041f81a1de059e43ec1e94d94cf8012516e92107a175c14031516e13d","id":572250,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793140650363938,"prev":null,"subject":"697de17b-41dc-4990-bb35-88b5b8b9e7d0","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. 0xce5933b10609476bdade7ae7620fcad31c87dd11b88434410fa6affa62ad84b0
2. 0x69ac5cfd4c0be5420949a5f0d646b23360e1f9705b15f66f11cd17d79490246a
3. 0x70e98d24f8d387ad3b260c10be299b9acf8cf54430c983df26a8aad01aedb97c
4. 0xad88ab26b0fcb5ac94511841071265ad7bf7a652b699ac76b24b1a2008dcb7d7
5. 0x7e5008d9a5ba27f632967aa2d21eeabb506119e29dac5e756df70fca5d937723
6. 0x3a8b1f40ef2bc9c89f27babba2f6b3064850a15986bedc0ce3615e744f7631bf
7. 0xddbcafb4a37bd0b651fa8ed8625c6fb3aa799a8342ebe00b4510e2dfeb58bc85
8. 0xcad52a0ea3774ba0a1183dd1f4126acd577f437ebdb7238504fe9557c4b172b1
9. 0xaf18667ec79d5d9a4652ab25003518e955692eb524bdfdd5946cf228c8204571
10. 0x565614630cc5d6ff60ad6f6c7fc1c4b5b5798fdc1022da11bdaa14d43b299533
11. 0x8e565ff0c748ae2cc61548174e51ddca11de3dc906e11accf31e6523b86a600c
12. 0x66e8d9e469038ef11a686abeed12c8ceb38a1a8cd79012ccf20d29a30858cbbc
13. 0xeb77e9d1884bf470f4a13a5869956a83ac37957112a29ccb9e63ddf7791b5a0b
14. 0xcc49fd573532e5a29f5be4033f62a2eff71456c020bd2258312b98e95cfe301e
15. 0x969cd44e5a4e8dc3110540398fbf689659eb51df735c1cda5d8f021ef9ff5683
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4