Evidence row 578968

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Find the best current LEGO deals — sets selling below RRP at major retailers. Returns sets ranked by discount percentage.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "description": "Number of results (max 25)",
            "maximum": 25,
            "minimum": 1,
            "type": "number"
          },
          "minDiscount": {
            "default": 10,
            "description": "Minimum discount percentage (default 10%)",
            "maximum": 90,
            "minimum": 1,
            "type": "number"
          },
          "retailer": {
            "description": "Filter by retailer (e.g. 'Amazon', 'Walmart', 'Target')",
            "type": "string"
          },
          "theme": {
            "description": "Filter by theme name",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_deals"
    },
    {
      "description": "Get price history and trends for a LEGO set across retailers over a given time period.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "days": {
            "default": 90,
            "description": "Lookback period in days (default 90)",
            "maximum": 365,
            "minimum": 1,
            "type": "number"
          },
          "retailer": {
            "description": "Filter to a specific retailer",
            "type": "string"
          },
          "setNum": {
            "description": "Set number (e.g. '75313' or '75313-1')",
            "type": "string"
          }
        },
        "required": [
          "setNum"
        ],
        "type": "object"
      },
      "name": "get_price_history"
    },
    {
      "description": "Find LEGO sets retiring soon. Useful for collectors who want to buy before sets become unavailable and prices increase on the secondary market.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "daysAhead": {
            "default": 180,
            "description": "How many days ahead to look (default 180)",
            "maximum": 365,
            "minimum": 1,
            "type": "number"
          },
          "limit": {
            "default": 15,
            "description": "Number of results (max 50)",
            "maximum": 50,
            "minimum": 1,
            "type": "number"
          },
          "theme": {
            "description": "Filter by theme name",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_retiring_soon"
    },
    {
      "description": "Get full details for a specific LEGO set including current retailer prices, BrickLink market data, and retirement status.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "setNum": {
            "description": "Set number (e.g. '75313' or '75313-1')",
            "type": "string"
          }
        },
        "required": [
          "setNum"
        ],
        "type": "object"
      },
      "name": "get_set_details"
    },
    {
      "description": "Search LEGO sets by name, set number, theme, year, or price range. Returns matching sets with key details.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "description": "Number of results (max 25)",
            "maximum": 25,
            "minimum": 1,
            "type": "number"
          },
          "maxPrice": {
            "description": "Maximum RRP in USD",
            "type": "number"
          },
          "maxYear": {
            "description": "Maximum release year",
            "type": "number"
          },
          "minPrice": {
            "description": "Minimum RRP in USD",
            "type": "number"
          },
          "minYear": {
            "description": "Minimum release year",
            "type": "number"
          },
          "query": {
            "description": "Search by set name or set number",
            "type": "string"
          },
          "theme": {
            "description": "Filter by theme name (e.g. 'Star Wars', 'Technic')",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_sets"
    }
  ]
}

What the leaf hashes

{"body":"aa7a63e7510858f350bbcebb7e9183fa110e1aac683f2cba8df8b693e55eaae6","id":578968,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143240464230,"prev":null,"subject":"aca935ef-e086-4902-93ef-3375357b35af","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. 0xd9ef9344639994353be0b94114877a582785387fa545e61e1e2c796bbf18951f
2. 0x7363d24c3802e8836f662994abf775a6dea6debaaacc514dd183975cc22202c2
3. 0x533a58eb61f60e98e6d1438b3b5e260aff802cee312d90fe6b75c2e5df99fea6
4. 0x0d0a4c0cb93be933a98277a0df481037b0a71ad6766939d547c1e927148f4d2e
5. 0x03308bfb7ff1ba6bd79800f62143894456c50c3e746463b88727702acd5480da
6. 0xf9c59cf391deed9792cf861799010b988a77894f88eb4c4ed8f85603650c4b89
7. 0xdcf8d5f0eafd38555fb5963b2f05be39854e61b468c15b2e6237738620b609d6
8. 0x1ec2a5fab358a9cfd2f9c2eef8a915eaea63dfa147d97550e306aad6651ecec2
9. 0x8bdce616c4c909642a48bdb5fb39d6e33534087a2d54a59595210f48e4576ac3
10. 0xdc65632ba8f717775d73727335b362506eea0dbb2f72c31e86c99a58a8007610
11. 0x51d2dfffae7b5a32ea0581772134c7771ab69d32e784a62f9ee589642395fc86
12. 0x29ce226640d83db3bc63fef23427a7af561200d30ffde9b1b7a61b814b844a39
13. 0x13692b463800846f580925c8ea49b43f92b7df3f9e8d32b8a18802640cca3780
14. 0xd59f3e577867f5105dd7f75598f16da8286185e426dfcdafb84e733fde2b2492
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4