Evidence row 579109

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "List the provisions that have changed most often — the least stable areas of UK law.",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Max results (default 20)",
            "type": "number"
          }
        },
        "type": "object"
      },
      "name": "get_most_amended"
    },
    {
      "description": "Get the full point-in-time amendment history for one provision: every version boundary date and what changed at each.",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "Provision id, e.g. 'ukpga/1996/18/section/94'",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_provision_history"
    },
    {
      "description": "List the most recent amendments across all tracked UK provisions. Useful for answering 'what changed in UK employment law recently?'",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Max results (default 50)",
            "type": "number"
          },
          "since": {
            "description": "ISO date, e.g. '2026-01-01'",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_recent_amendments"
    },
    {
      "description": "Search UK legislation provisions (employment, equality, consumer, data protection, company, health & safety law) by keyword. Returns provisions with their amendment history.",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Max results (default 20)",
            "type": "number"
          },
          "query": {
            "description": "Keywords, e.g. 'unfair dismissal' or 'disability'",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_uk_legislation"
    }
  ]
}

What the leaf hashes

{"body":"3c8a8713579c1fc67c9def130c32c9b0adcff90bdae63854d9567fd59150f2f8","id":579109,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143307230156,"prev":null,"subject":"22424545-1c53-4945-aef3-62520f812f79","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. 0x91acc9fb83af76dd6ad8633a696f3a8a3621ddd488b0bb5a4f963b2707ad0230
2. 0xc0d41f4f4244a4b6dd805eb61bf1e6aa90b276146d1ca83e1acf4bb7df548dde
3. 0x4134f99ad225f5db863a6ee6d61fa1ea837fee37bb256ed6b646068414f64ba9
4. 0xdeed5428da3af0ef75b1b06d16f51121a0f0c12c371089530735dff3e8807350
5. 0x44c582a091415f058c9b1ca786088e508e2b66233b73384d322a26216e3fc2e1
6. 0x8d288c4c40adfd93c0a133b92e9bd0359090e08da2fd733a3c6320544d1a3b87
7. 0x40719c509e5c32f52ce4bc0b586e74098712563d8942d5e5237fc50990043299
8. 0x02ad3eba39542c7631c0aba80e2a1a15b539d821e2cfd2f27db17f850f67f55c
9. 0x58b8a552fd884077a8898971f1073528479c2a4561337c256ecaeacafa9a4ff0
10. 0x661ad45868f05f6657414194f024a4b958ade814e0bdf453fcda52c79b0de636
11. 0xaa9773e9c492a92149563af713a17e44011b905d5edb354dd70fb0a97c82a438
12. 0xfd2b06953e26e4e360d929209ec04f8c67b7bbdc4861dbc60618fbc5f9b393f0
13. 0x5c9cbca5bb1d6be4d84e301b4e4c1a280536eb16ee98ed4add9057142c132dde
14. 0x06e3b43165f5b3c31d850bc32f20b2e25b844564c4e042c141b9748c26a5a600
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4