Evidence row 578557

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Checks a quoted HRV or ERV against bedroom airflow needs using exact-model HVI-certified data. Returns a screening verdict, reasons, assumptions and questions for the installer. Ambiguous model names return candidates for clarification rather than a guessed model. Does not provide a permit-ready design or guarantee installation performance.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "bedrooms": {
            "description": "Every bedroom, with how many people sleep in each",
            "items": {
              "properties": {
                "name": {
                  "description": "What the household calls the room, e.g. \"Main bedroom\"",
                  "maxLength": 40,
                  "type": "string"
                },
                "sleepers": {
                  "description": "People who sleep there (a large dog counts about like a person)",
                  "maximum": 6,
                  "minimum": 0,
                  "type": "integer"
                }
              },
              "required": [
                "sleepers"
              ],
              "type": "object"
            },
            "maxItems": 8,
            "minItems": 1,
            "type": "array"
          },
          "floorAreaSqft": {
            "description": "Conditioned floor area in square feet, for the daytime code rate",
            "maximum": 20000,
            "minimum": 200,
            "type": "number"
          },
          "model": {
            "description": "The brand and model exactly as the quote prints it, e.g. \"Broan-NuTone B160E75RS\"",
            "maxLength": 120,
            "type": "string"
          },
          "quotedType": {
            "description": "Whether the quote calls it an HRV or an ERV, to catch a mismatch",
            "enum": [
              "HRV",
              "ERV"
            ],
            "type": "string"
          },
          "state": {
            "description": "Two-letter US state, e.g. \"CO\"",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          },
          "unitId": {
            "description": "An id from a previous result’s candidates, once the person has said which exact model it is",
            "maxLength": 80,
            "type": "string"
          },
          "zip": {
            "description": "Five-digit ZIP code (used for the state if state is missing)",
            "pattern": "^\\d{5}$",
            "type": "string"
          }
        },
        "required": [
          "bedrooms"
        ],
        "type": "object"
      },
      "name": "check_ventilation_unit"
    },
    {
      "description": "Explains a bedroom CO₂ reading against the precautionary 800 ppm average-while-asleep goal: band, distance from the goal, whether the measurement is comparable, signs of a monitor reading low, and free fixes with trade-offs. The goal is not a health limit. Door-open nights appear only as one-night tests, not fixes.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "measured": {
            "description": "night_average: the average while asleep (a monitor’s recorded night). overnight_high: the highest number overnight (what most monitors show and people remember). spot: one reading at one moment. If unsure, use overnight_high for a morning number and spot for a daytime one.",
            "enum": [
              "night_average",
              "overnight_high",
              "spot"
            ],
            "type": "string"
          },
          "ppm": {
            "description": "The reading in parts per million",
            "type": "number"
          },
          "room": {
            "description": "Where it was measured (default bedroom)",
            "enum": [
              "bedroom",
              "other"
            ],
            "type": "string"
          },
          "sleepers": {
            "description": "People who slept in the room that night, if known",
            "maximum": 6,
            "minimum": 0,
            "type": "integer"
          }
        },
        "required": [
          "ppm",
          "measured"
        ],
        "type": "object"
      },
      "name": "explain_co2_reading"
    },
    {
      "description": "Lists HRV and ERV installer companies for a US ZIP code in HouseExhale’s neutral order, with its ordering rule and coverage limits. Returns member companies where the installer program is open, otherwise researched companies from public pages covering the Colorado Front Range and New England. Contains no sponsored cards or paid recommendations. Does not contact anyone.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "job": {
            "description": "Only if it applies: tight (just air sealed, insulated or newly built), no-ducts (no forced-air ducts), condo (condo or apartment), service (asking a past installer back)",
            "items": {
              "enum": [
                "tight",
                "no-ducts",
                "condo",
                "service"
              ],
              "type": "string"
            },
            "maxItems": 4,
            "type": "array"
          },
          "zip": {
            "description": "The home’s five-digit ZIP code",
            "pattern": "^\\d{5}$",
            "type": "string"
          }
        },
        "required": [
          "zip"
        ],
        "type": "object"
      },
      "name": "find_installers"
    },
    {
      "description": "What HouseExhale’s research found for a state (by ZIP code or state): utility and state programs that pay toward an HRV or ERV by name, other ventilation rebates, air sealing and insulation help, the state’s federal home energy rebates, state tax credits, and the status of the federal tax credits. Each with its link and date. Never promises eligibility.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "state": {
            "description": "Two-letter US state, if no ZIP code",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          },
          "zip": {
            "description": "Five-digit ZIP code",
            "pattern": "^\\d{5}$",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "find_rebates"
    },
    {
      "description": "Lists up to three reviewed HRV/ERV families whose HVI-certified airflow covers what the household’s bedrooms need at night, with margin: units to ask installers about, never a single pick or a recommendation, and never paid placement. Also returns the night airflow target and how it was worked out.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "bedrooms": {
            "description": "Every bedroom, with how many people sleep in each",
            "items": {
              "properties": {
                "name": {
                  "description": "What the household calls the room, e.g. \"Main bedroom\"",
                  "maxLength": 40,
                  "type": "string"
                },
                "sleepers": {
                  "description": "People who sleep there (a large dog counts about like a person)",
                  "maximum": 6,
                  "minimum": 0,
                  "type": "integer"
                }
              },
              "required": [
                "sleepers"
              ],
              "type": "object"
            },
            "maxItems": 8,
            "minItems": 1,
            "type": "array"
          },
          "floorAreaSqft": {
            "description": "Conditioned floor area in square feet, for the daytime code rate",
            "maximum": 20000,
            "minimum": 200,
            "type": "number"
          },
          "state": {
            "description": "Two-letter US state, e.g. \"CO\"",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          },
          "zip": {
            "description": "Five-digit ZIP code (used for the state if state is missing)",
            "pattern": "^\\d{5}$",
            "type": "string"
          }
        },
        "required": [
          "bedrooms"
        ],
        "type": "object"
      },
      "name": "units_to_ask_about"
    }
  ]
}

What the leaf hashes

{"body":"cad66bc105995f82c582790b3db4b53ace7af576ea4a45ed911b8e118e954ddd","id":578557,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143056438352,"prev":null,"subject":"52758c0f-8d5e-4cdc-be93-5f124140523c","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. 0x63e4280a7c2110fc1c3bc24e09669ad9c356cdbe512effdfe2d6a442ed7e2126
2. 0x48c43f3503f0d13a4ec5f5009a0a40ab2edb452dc62a932654f37443716357ea
3. 0xa3a0e55136f33ce6df9b35dd431d8060865f561c396cdd15471208e2fa4a61bb
4. 0x44a7ce1c5edbd700717eb177919a6905884f9bf84a2533ab376a2829ba6027e0
5. 0x73bb6c451d96faf8d83f8ca1c671bb9c27dfb1cd182098ab1426b0d179196caf
6. 0xa34bcd13c8f03de656c07fa2b79f4ff2b90a9b83de6d34bdb29d7083a1204200
7. 0x30f714e65793d138be89b17617fc30833eefdaf6fbf5833a523ff85e81b6e592
8. 0x9109498f9203dc7474ad015ce34999f6b060258b960a55cf4fbffaef3689d57f
9. 0x050cdf6b85ab70f7f01c4c60d83af6a0245528232988c5831ded9a8c7f0d05da
10. 0xdff25c90466feca6b1740e9cfbe03f905754b3f29c0039b59db7839a088e5fc7
11. 0x4b8a5bb7702c56bf518d411dcb651cd65152b4c5dc726c84c9defe976da6fc97
12. 0x2e58dc6ee7aeaa711f82442dcbba8b29376e082f623a6e0234d71b85ff8d3377
13. 0x38f17e73d675dd35d0dd4a9f0ebd22a3333bcd28f96e42d5dd126e08211ffc4a
14. 0x4277e02be0b5d91d78bc2247e37d402572474ba896c2e8f45765c8dc4e244d36
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4