Evidence row 567527

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Get the latest published European Commission CBAM certificate price based on European Energy Exchange (EEX) EU ETS auction averages.",
      "inputSchema": {
        "properties": {
          "all": {
            "description": "Set true to retrieve the complete historical price series.",
            "type": "boolean"
          }
        },
        "type": "object"
      },
      "name": "cbam_certificate_price"
    },
    {
      "description": "Retrieve the CBAM Data dataset change feed tracking amendments and updates to Annex I scope and default emissions benchmarks.",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Changes per page (default 50, max 200).",
            "maximum": 200,
            "minimum": 1,
            "type": "integer"
          },
          "page": {
            "description": "Page number (default 1).",
            "minimum": 1,
            "type": "integer"
          },
          "since": {
            "description": "Filter changes since this dataset version.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "cbam_changes"
    },
    {
      "description": "Search the European Commission default emission values dataset under Regulation (EU) 2025/2621 as corrected by Regulation (EU) 2026/1740 by CN code prefix, country of origin, or sector.",
      "inputSchema": {
        "properties": {
          "cn": {
            "description": "Filter by CN prefix (digits only).",
            "type": "string"
          },
          "origin": {
            "description": "Two-letter ISO origin or ROW for rest-of-world fallback.",
            "type": "string"
          },
          "sector": {
            "description": "CBAM sector.",
            "enum": [
              "cement",
              "iron_steel",
              "aluminium",
              "fertilisers",
              "electricity",
              "hydrogen"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "cbam_defaults"
    },
    {
      "description": "Calculate EU Carbon Border Adjustment Mechanism (Reg (EU) 2023/956) embedded direct and indirect emissions, the Art. 31 free allocation adjustment (CBAM factor times the Reg (EU) 2025/2620 CBAM benchmark), required CBAM certificates, and total euro cost for an imported product given CN code, country of origin, quantity in metric tonnes, and import year (2026-2034).",
      "inputSchema": {
        "properties": {
          "carbonPricePaid": {
            "description": "Optional verified carbon price effectively paid in the country of origin (EUR/tCO2e) under Art. 9.",
            "minimum": 0,
            "type": "number"
          },
          "cn": {
            "description": "Combined Nomenclature (CN) or TARIC code at 4, 6, 8, or 10 digits.",
            "type": "string"
          },
          "origin": {
            "description": "Two-letter ISO 3166-1 alpha-2 country of origin code (e.g. TR, CN, IN, US).",
            "pattern": "^[A-Z]{2}$",
            "type": "string"
          },
          "tonnes": {
            "description": "Net mass in metric tonnes (or MWh for electricity).",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "year": {
            "description": "Import year (2026 to 2034).",
            "maximum": 2034,
            "minimum": 2026,
            "type": "integer"
          }
        },
        "required": [
          "cn",
          "origin",
          "tonnes",
          "year"
        ],
        "type": "object"
      },
      "name": "cbam_resolve"
    },
    {
      "description": "Check whether a Combined Nomenclature (CN) code falls within Annex I of Regulation (EU) 2023/956, and inspect sector coverage, direct/indirect rules, or child sub-headings.",
      "inputSchema": {
        "properties": {
          "cn": {
            "description": "CN or TARIC code at 4, 6, 8, or 10 digits (e.g. 7208, 72083900).",
            "type": "string"
          }
        },
        "required": [
          "cn"
        ],
        "type": "object"
      },
      "name": "cbam_scope"
    },
    {
      "description": "Retrieve the active CBAM dataset version, build date, total scope and default rows, and latest price period.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "cbam_status"
    }
  ]
}

What the leaf hashes

{"body":"7d539d69e86eeb847d7fc0ca38358ea2e9fe05426d79575d4279f8c1d227611c","id":567527,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138753455371,"prev":null,"subject":"d3b3dd28-3698-4aae-9d97-1d5af7822ac5","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. 0x4bd83493fd5cf472251196c26f82e09afb513caacbd8484c054db3af5627f171
2. 0xc65c848f09eaf6922d001fb6543d1bacc639da4cf6e9dcbd256993afbb6b4dfd
3. 0x2387e0b0f951814e88274760519600e92f5b341a31cbfb841c44c47c6b0a8f6b
4. 0xb67ed7bf88e1a3ac761d19bade59ec74e2129cf5898097a630f3fae4cd18f87b
5. 0xed9f63854be3b4e4e9296246d9f344ff7c58b4561b34245c2a522f410dbff756
6. 0xde25777b71fcc84cc58be89bdfeb0ccc04d473c3bf72b2c427164369a5ad4520
7. 0xa9d2b02356f00eb250005cdbb8142d2f8bf95d83a0caacf5aa7889f8932bdaa2
8. 0xf477a726d3db4db1aac3d55c839aacbacd3f7fd92a61e1ae3d206230ca306744
9. 0x4cde6f0a82d51fa93b887c446d0b5dad4b690115ace2407a581b69e190cd2a42
10. 0xc5c8c1cab44dcac92464fe5056ed0cd782b104eaed78c431f44ecca1467a48a1
11. 0x5b15539a9e45c30d985cffa0f43853909d4e3a207bff9b6e3e35303e52a3c2d2
12. 0xf5ad7dee20c9ad48ff75cc443e6c6ae3a718321f07b826d581afdb243e59305f
13. 0x150dc531eedad3837a4be47dd0bf1a84bf98feb63216c125982425fda525a3fd
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4