Evidence row 543495

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Check a set of pedals as a pedalboard: a suggested signal-chain order with reasons, total current draw against a power supply, and a count of power and compatibility issues.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "pedals": {
            "description": "Pedal slugs from search_pedals, in any order",
            "items": {
              "description": "A pedal slug from search_pedals, e.g. boss-ds-1-distortion",
              "maxLength": 120,
              "minLength": 1,
              "type": "string"
            },
            "maxItems": 40,
            "minItems": 1,
            "type": "array"
          },
          "supplyOutlets": {
            "description": "How many outputs the power supply has",
            "maximum": 30,
            "minimum": 1,
            "type": "integer"
          },
          "supplyTotalMa": {
            "description": "The power supply's total current in mA, if known",
            "maximum": 20000,
            "minimum": 1,
            "type": "integer"
          },
          "usesFxLoop": {
            "default": false,
            "description": "True if the amp's effects loop is used, so time-based effects can go in the loop",
            "type": "boolean"
          }
        },
        "required": [
          "pedals"
        ],
        "type": "object"
      },
      "name": "check_board"
    },
    {
      "description": "Two to five pedals side by side: score, what each is best for, lowest new price, used median and key specs.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "slugs": {
            "items": {
              "description": "A pedal slug from search_pedals, e.g. boss-ds-1-distortion",
              "maxLength": 120,
              "minLength": 1,
              "type": "string"
            },
            "maxItems": 5,
            "minItems": 2,
            "type": "array"
          }
        },
        "required": [
          "slugs"
        ],
        "type": "object"
      },
      "name": "compare_pedals"
    },
    {
      "description": "One buying guide: who it is for, what matters when choosing, the three picks (best overall, budget, step up) with strengths, flaws and current prices, and the other pedals considered.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "slug": {
            "description": "A guide slug from list_guides",
            "maxLength": 160,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_guide"
    },
    {
      "description": "Everything PedalBro knows about one pedal: specs (power, size, bypass, controls), a plain-language summary, the PedalBro review score, what players say, professional review ratings with links, current new and used prices with buy links, and similar pedals.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "slug": {
            "description": "A pedal slug from search_pedals, e.g. boss-ds-1-distortion",
            "maxLength": 120,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_pedal"
    },
    {
      "description": "How a pedal's new and used prices have moved over the last 90 days (weekly points), recent sold used listings, and current prices. Useful for 'is this a good price' and 'should I buy used'.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "slug": {
            "description": "A pedal slug from search_pedals, e.g. boss-ds-1-distortion",
            "maxLength": 120,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_price_history"
    },
    {
      "description": "PedalBro's buying guides ('best overdrive pedals', 'best delay under $200', ...), each with its top pick. Use get_guide for the full picks.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "list_guides"
    },
    {
      "description": "Search guitar and bass pedals by brand, model, nickname or type (typos are fine), optionally only those buyable new under a price. Returns names, slugs and lowest new prices.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "brand": {
            "description": "Brand slug, e.g. boss, strymon, electro-harmonix",
            "maxLength": 60,
            "type": "string"
          },
          "category": {
            "description": "Category slug to narrow to, e.g. overdrive, fuzz, distortion, delay, reverb, chorus, compressor, looper",
            "maxLength": 60,
            "type": "string"
          },
          "limit": {
            "default": 10,
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "maxPriceUsd": {
            "description": "Only pedals buyable new and in stock at or under this price",
            "exclusiveMinimum": 0,
            "maximum": 100000,
            "type": "number"
          },
          "query": {
            "description": "e.g. 'tube screamer', 'strymon delay', 'fuzz'",
            "maxLength": 100,
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_pedals"
    }
  ]
}

What the leaf hashes

{"body":"8fee8065dba783022ef780be032e1171e97ac5280c9b5e7b396ba3453451c367","id":543495,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793131465824584,"prev":null,"subject":"6437176f-02fd-4bc7-a5d5-72cab84046f7","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. 0xec9eedb198744ebd43c151be1814a4dd2e6841220b832ef6bfaf0ad09ca9b2cc
2. 0x470e7ae26fe1c16dc8e7fb6efee8b317c848a350bfba9741b179a23bd78ed19f
3. 0x865080b478699ad82a34d11fba7a494ced0f6fa9a7a1cedfd95e8c16b0061f56
4. 0xb1290d122263f7b7d3d151a31e735843101e165dbee9a5092aa03129883ac569
5. 0x5e63245ca5e479d237c5dd13e0f2c73453354709f0ad5e671b0972b2282f31da
6. 0xd1363499c11d5c4c4048afca2d3cc3d5bb0d22626ff9f543e509384418604a8c
7. 0xce43009873acb5b2fbc0fe168c05205cc7af6b728aa00f76686555099123956d
8. 0xe104cb03f9ef5b2373c81e61ee5d655adb047a87b4a3732b8298f974bd0c3421
9. 0x9664032c5661474bbe85e8564705704d82970fbe9f9060208596cffbebb54b92
10. 0x608e9aca19f5b83664c8af52c01a5226be1e3df4671dd8fc685cc0d29cc1bac6
11. 0x4b58e29710bea760065b738e250d90dbefa1ab9ab46b03166a67e8b11ec5eec6
12. 0x1bd815b8c338cfc2bcf769f9c67988a5890577c27b5e900948b5339a99e158a8
13. 0x89602081fbcc80aef8908f5df765767a1a41cc8b089111259ea78e6583a8bc4b
14. 0x41f9f462759cb539183e979fb3eb967d94755cf039c44a64a9a3c4ad97523cfd
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4