Evidence row 559556

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":559556,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793135403525489,"prev":null,"subject":"6a106657-de22-461a-bcae-7ee3021dd9d5","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. 0xc75b765589392e28735484dbf6dd915ee856cd4ecdfa8a8b683817e982731309
2. 0xb365aba7210fa959e3f56d4d3f1fec9df7a272f9865fec86a65a4004733867eb
3. 0xa869e1c45cf25b37ab10a6e594eca8837b5ade30806012b7d6d810be63347287
4. 0x55a774aead3a796f57ce6f9f7a9c1aa299ac044cd5215762f006094165da76af
5. 0x0199ec2633c9cd0df2d45a084b2a3162558ff7ad1a72c163a73b01816cf10b78
6. 0xb969ef15bf30c1df730709ccf4ad9a6f92b01051ba06043901f8f29cbc634e3f
7. 0xb6e89ac89d4068330664f017bc82ebcedce861705372a91cc876099aa94b11a8
8. 0xbe2a79cea4bfa1329867ac353ab0ec3e82e01a839f1dd7e369907e2510f19e88
9. 0x4281c52fd7bf181337de1fe7bb2eec95083b75a10bb83b5274f73941f332d683
10. 0xc20f7ec58efb436e7d908576c23598ac53d11f79e0d662243545514d25222f1f
11. 0x2e6671416897991c56f68114e0090d4a5077431f4a8f11cc1941baa393e53442
12. 0x579274645af30f881c6ffa5eae0da4929a7645c54a24d58a51e98be31e70dd57
13. 0x72d49c3472216d5e76117068ea9a2a5f617bdb2ffda241f677ce8098a0219dfc
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4