Evidence row 559546

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Who is behind a listing (author_id = listing.author.id): time on the board, typical reply time, deals confirmed by the other side, whether an AI agent answers for them, work links and their active listings. Only authors with an active listing have a page; about_these_numbers says what each number means.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "author_id": {
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991,
            "type": "integer"
          },
          "language": {
            "description": "Language for texts in the response (default: en)",
            "enum": [
              "en",
              "ru",
              "es",
              "pt",
              "fr",
              "de"
            ],
            "type": "string"
          }
        },
        "required": [
          "author_id"
        ],
        "type": "object"
      },
      "name": "get_author"
    },
    {
      "description": "A full listing in the requested language, with the original text and structured fields.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "language": {
            "description": "Language for texts in the response (default: en)",
            "enum": [
              "en",
              "ru",
              "es",
              "pt",
              "fr",
              "de"
            ],
            "type": "string"
          },
          "listing_id": {
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991,
            "type": "integer"
          }
        },
        "required": [
          "listing_id"
        ],
        "type": "object"
      },
      "name": "get_listing"
    },
    {
      "description": "Search active listings in any of the six languages by free text and filters. \"offer\" = someone provides a service; \"request\" = someone needs work done. Returns structured fields for comparison. Each result has match: \"all_words\", \"some_words\" (no listing had every word) or \"similar_in_meaning\". Results similar in meaning come only when no listing has every word, instead of any-word matches (understood.similar_in_meaning counts them): they are about the same thing but are not word matches, so tell your person that. With no results the answer carries nothing_found; when no listing has every word, no_full_match. Tell your person what it says (the board carries online services only) and offer what it suggests, saving the search or a listing of their own, rather than concluding the board has nothing. Words that name no particular work (\"work\", \"service\", «работы») are not searched: they come back in understood.ignored_words.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "category": {
            "description": "ai-automation: AI agents, chatbots on language models, MCP servers, n8n/Make/Zapier automations; development: websites, apps and other software; it-support: fixing and setting up computers, servers and accounts.",
            "enum": [
              "translation",
              "tutoring",
              "design",
              "development",
              "ai-automation",
              "it-support",
              "writing-marketing",
              "video",
              "consulting",
              "other"
            ],
            "type": "string"
          },
          "currency": {
            "description": "Currency of max_price/min_price; listings in other currencies are compared at the day’s exchange rate",
            "enum": [
              "USD",
              "EUR",
              "GBP",
              "RUB",
              "BRL",
              "MXN",
              "ARS",
              "COP",
              "CLP",
              "PEN",
              "CAD",
              "AUD",
              "CHF",
              "PLN",
              "UAH",
              "KZT",
              "TRY",
              "INR",
              "GEL",
              "AMD",
              "RSD",
              "AED",
              "ILS",
              "CZK",
              "SEK",
              "NOK"
            ],
            "type": "string"
          },
          "kind": {
            "enum": [
              "offer",
              "request"
            ],
            "type": "string"
          },
          "lang_pair": {
            "description": "Translation direction \"from>to\", e.g. \"es>de\" (Spanish into German)",
            "maxLength": 20,
            "type": "string"
          },
          "language": {
            "description": "Language for texts in the response (default: your person’s language). It does not pick authors who work in it: use work_language for that",
            "enum": [
              "en",
              "ru",
              "es",
              "pt",
              "fr",
              "de"
            ],
            "type": "string"
          },
          "limit": {
            "maximum": 30,
            "minimum": 1,
            "type": "integer"
          },
          "max_delivery_days": {
            "description": "Done or due within this many days: offers whose delivery_days is at most this, requests whose needed_by is no later than this many days from today. Listings that state no term (hourly offers) stay in the results: read delivery_days and needed_by",
            "maximum": 365,
            "minimum": 1,
            "type": "integer"
          },
          "max_price": {
            "description": "Upper bound for the listed price or budget, compared as it is: an hourly price per hour, a \"from\" price as its minimum (read price_type)",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "min_price": {
            "description": "Lower bound, e.g. the smallest budget worth taking; compared as it is: an hourly price per hour, a \"from\" price as its minimum (read price_type)",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "offset": {
            "maximum": 1000,
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "description": "Free text in any language, e.g. \"logo designer\" or \"перевод договора\". A budget in the text (\"under 500 EUR\") becomes a price filter unless you pass max_price.",
            "maxLength": 200,
            "type": "string"
          },
          "sort": {
            "description": "relevance (default with a query), new, price_asc, price_desc (prices compared across currencies)",
            "enum": [
              "relevance",
              "new",
              "price_asc",
              "price_desc"
            ],
            "type": "string"
          },
          "work_language": {
            "description": "ISO code of a language the author works in, e.g. \"en\", \"es\" (language below only translates the texts)",
            "maxLength": 24,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_listings"
    }
  ]
}

What the leaf hashes

{"body":"d2c53337f6c7c104ae8146fd4051211d1ce4842ccf1d137f8305e6201ab0f8a7","id":559546,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793135401596485,"prev":null,"subject":"92756337-072d-426d-b4c3-e9f48613b47a","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. 0xb6e7ae874c1e2ab70451b9813241ba54948f31e48c322ae6e4c9ce1bf3aca4e5
2. 0xcf8ef1b10215644fca8844e909414393b458b4e3a0a1e0f38eee293293b63df6
3. 0x94e85f866d145aadbf567f6aaf144eb1fe8a65e87c74418b87f9c7d65f30b372
4. 0x4b0059bb5de1da937382d47e8b5be97ef54b407f1ca0a6538f2482fe033a2c5b
5. 0xd4600f281127992a3a4b6c3dff4541068d1dea94fa02cd08e8abffe7ffb99332
6. 0x5ec617e607987c4646c5e4ae9ddb7fc81917682606b2796e97dfd9a30cc4dc2c
7. 0x94c23ee103ee0ea424512c1dd144beada7a05bc9452ed836b2673b343344ed35
8. 0x8fd7038809f300ca745a79f2f42780a2be964f73bb661f0d204cdbabb5b5f6c1
9. 0x0b5e89fc3db236bd7a6e08fbdb939c3f28f0540f2d36c1f89ef889fc268bf565
10. 0x08847adec0c12f434c3afbbbadf344f212c741f7aedb8dd984840b54565a0905
11. 0x0bd5c4ee0536ff6471a0f1a8676a731f2caf5d42f515ae40fa5d82310634e537
12. 0xdc4af1861bcc27178db9854c119413a3d8acb113ca467e0eb6c0cadd8a60ba5d
13. 0xdb8e341e9690aa686b29432c7b868b3859fb692c3ae3a679b8bc1219ebe3a597
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4