Evidence row 541772

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Published city readings ranked by price (EUR). Optionally filter by country code or by a substring of the city name.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "country": {
            "description": "ISO 3166-1 alpha-2 country code",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          },
          "query": {
            "description": "Case-insensitive substring of the city name",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "cities"
    },
    {
      "description": "Side-by-side omelette index readings for two or more countries, ranked by price in EUR.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "countries": {
            "description": "ISO 3166-1 alpha-2 country codes",
            "items": {
              "maxLength": 2,
              "minLength": 2,
              "type": "string"
            },
            "maxItems": 20,
            "minItems": 2,
            "type": "array"
          }
        },
        "required": [
          "countries"
        ],
        "type": "object"
      },
      "name": "compare"
    },
    {
      "description": "The omelette price index by country. Without arguments: every published country ranked by price (EUR, trimmed median). With a country: that country's full reading.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "country": {
            "description": "ISO 3166-1 alpha-2 country code, e.g. US, DE, SE",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "country_index"
    },
    {
      "description": "Descriptive statistics for The Omelette Index: how many places serve a plain omelette, countries/subdivisions/cities published, the global price centre in EUR, and the dearest and cheapest published countries.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "index_overview"
    },
    {
      "description": "Published state/province readings inside one country, ranked by price, with each subdivision measured against its own country (vsCountryPct).",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "country": {
            "description": "ISO 3166-1 alpha-2 country code",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "country"
        ],
        "type": "object"
      },
      "name": "subdivisions"
    }
  ]
}

What the leaf hashes

{"body":"fae7a2e66db77fae64c2860a84a4939f1fba1bc8fb7579a47f539fa42ddd0b1e","id":541772,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793130525837920,"prev":null,"subject":"4318f640-7813-4643-8b05-fa3ca3e24d29","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. 0x2f0cefe5e235c6e6bf6917ba8700beb8337dea52fa1340b01c57b7b24f096c2a
2. 0x36e80332c1ed6b7fba5adaf220de138ccb10470c5eb54090bd1ff361c4f0e2fd
3. 0xd4fa8131410b4f897c76de1a2a3803019289ca852ebb771ab36f2c1f91171598
4. 0xe83101c369ac88e9fd8ca53e351f830bda241584e5dd796dedd5b0207e07954a
5. 0x16c847094c397eb72b9ad3c42ef8ce42d082702ac541897c3a50d7e5df882c38
6. 0xfb6cd9fcd89f736d04c7144c892139dfba9c3e7fc4b7c1524a6b7fb7981c5a52
7. 0x03feaef96590902c383307077146e6d84ae0131d1c627e9e5d65bb779ccbfe3d
8. 0xc17ec994349866766f5429e7c149393b9939962a749d29344bc005e1997ed410
9. 0x3952b5446c1b64ab02b957dd4ee4ac11af6cd93d8d85563b3c34a21b1838b1ab
10. 0xcb2ca9ab824056f7e354a29fb0c627eccacecbba9628e903cc3960727611d8bb
11. 0xebaa56a29a2dfdf39f8c55fe4433bd513a26a783d93a8d85e51192ee9bb2860f
12. 0x2d9c2517fb6dcdc0ce42dd3a93f7e33064509cbed0a9132fb1209ec8f33ef0ab
13. 0x2a25cd9926d8f2ef4726fd2a80f77b1ca202b6c3ca56aeb2f520555c93efd434
14. 0x595de2dea3b8fa56dbd6142dd78ae79f3e7169c631e41a844b100613abb3e430
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4