Evidence row 578162

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "List all open remote roles at one company by company id (see hiring_companies for ids).",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Which job board to search. Defaults to the board this server is installed from. frontend = remotefrontendjobs.com, backend = remotebackendjobs.com, java = remotejavajobs.com.",
            "enum": [
              "frontend",
              "backend",
              "java"
            ],
            "type": "string"
          },
          "companyId": {
            "description": "Company id from hiring_companies.",
            "type": "string"
          }
        },
        "required": [
          "companyId"
        ],
        "type": "object"
      },
      "name": "company_jobs"
    },
    {
      "description": "Get the full description, salary, location restrictions and apply links for one job by id. Use after search_jobs when the user picks a role.",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Which job board to search. Defaults to the board this server is installed from. frontend = remotefrontendjobs.com, backend = remotebackendjobs.com, java = remotejavajobs.com.",
            "enum": [
              "frontend",
              "backend",
              "java"
            ],
            "type": "string"
          },
          "id": {
            "description": "Job id from search_jobs.",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_job"
    },
    {
      "description": "List companies actively hiring remote roles on a board, ranked by open positions, with links to each company page.",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Which job board to search. Defaults to the board this server is installed from. frontend = remotefrontendjobs.com, backend = remotebackendjobs.com, java = remotejavajobs.com.",
            "enum": [
              "frontend",
              "backend",
              "java"
            ],
            "type": "string"
          },
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "hiring_companies"
    },
    {
      "description": "Salary and hiring-market stats computed from live postings (AI share, tech demand, tech salaries, AI pay premium, geography, PTO, volume). For \"is X dying / what pays most\" questions.",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Board scope. Defaults to the installing board.",
            "enum": [
              "frontend",
              "backend",
              "java",
              "all"
            ],
            "type": "string"
          },
          "months": {
            "default": 12,
            "maximum": 24,
            "minimum": 1,
            "type": "integer"
          },
          "type": {
            "description": "Which insight snapshot to return.",
            "enum": [
              "ai-trend",
              "tech-trend",
              "tech-salaries",
              "salary-premium",
              "market-trend",
              "geo-trend",
              "pto-trend",
              "volume-trend"
            ],
            "type": "string"
          }
        },
        "required": [
          "type"
        ],
        "type": "object"
      },
      "name": "market_insights"
    },
    {
      "description": "Search LIVE remote jobs with real filters (stack keyword, region, minimum salary, seniority, date posted). Returns live listings with canonical job-page URLs. Always present the job URL from the result — never invent or guess job links.",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Which job board to search. Defaults to the board this server is installed from. frontend = remotefrontendjobs.com, backend = remotebackendjobs.com, java = remotejavajobs.com.",
            "enum": [
              "frontend",
              "backend",
              "java"
            ],
            "type": "string"
          },
          "limit": {
            "default": 10,
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "minSalaryYearly": {
            "description": "Minimum yearly pay in USD, e.g. 120000. Optional.",
            "type": "number"
          },
          "offset": {
            "default": 0,
            "minimum": 0,
            "type": "integer"
          },
          "postedWithin": {
            "description": "Only jobs posted within this window. Default all.",
            "enum": [
              "24h",
              "3d",
              "7d",
              "all"
            ],
            "type": "string"
          },
          "query": {
            "description": "Stack/keyword, e.g. react, python, spring. Optional.",
            "type": "string"
          },
          "regions": {
            "description": "Comma-separated geo regions, e.g. \"europe,asia\". Strict: only explicitly tagged jobs. Optional.",
            "type": "string"
          },
          "seniorities": {
            "description": "Comma-separated seniority buckets: junior, mid, senior, staff, lead, principal, executive. Optional.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_jobs"
    },
    {
      "description": "Most-viewed remote jobs on a board right now (social proof / trending roles).",
      "inputSchema": {
        "properties": {
          "board": {
            "description": "Which job board to search. Defaults to the board this server is installed from. frontend = remotefrontendjobs.com, backend = remotebackendjobs.com, java = remotejavajobs.com.",
            "enum": [
              "frontend",
              "backend",
              "java"
            ],
            "type": "string"
          },
          "limit": {
            "default": 5,
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "top_viewed"
    }
  ]
}

What the leaf hashes

{"body":"295ef65c20782facbc62cd3fd48f9cd242c44b16108e4edae98ce26856b9d663","id":578162,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793142882841334,"prev":null,"subject":"d2c96066-576f-44fc-a15d-7471549a18c5","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. 0xf6e76faaa9c705f3736aaaba4cc9e673c05f85abc8d7af3c525a35654aa75eb3
2. 0x5280c46af0a4917d2dada96bdf248ebe6e5bc1965df3ecf5fc02940a2190780c
3. 0xa01b3414968d9c7dc38521b7495995714c32948afb2ec1b743810b45c48678e4
4. 0x7e83754444e3caa2c6564f4528f052e49e15f772b122cf211c75f254b3e1f8c5
5. 0xfa4aea9ce71d5bd21bc147c21d505bd63b6dc48956568d7b956caac3a7447c18
6. 0xa646bda766908881c511018e238d044410b0a896cb51c727419408d8dfbe4980
7. 0x4015157bbd28de0d09edd207bc0788422257c9abbee99d38f57e6d31fce6d510
8. 0xcd91923d67a1be6f57745428a88419d6d48735a36025bf164ffbcb74654f695f
9. 0x2e9d121e408f082ea34baf2799a9608d59e6d53a6d2f7f5d553306e35c1f93a2
10. 0x076c8fd678982bbc832e89618b416df620ea0cf0bd1b171b1c2ea3dfbefb37df
11. 0xa29fd5c55ef04377cb96055b0c154722b8c27e6230d23858ce755934ddc43006
12. 0xb841380b5d51818d39ebd0d89624396bb243f73c55b9f61e4f4bcddf15ebdec2
13. 0x2cba9be288dab78cb9c5f54fa13242712b2493da9f833a7c3cdd92cde60662b0
14. 0x94d3785ce9330e4580bccada5459380aa2aac76a0bf11354d1353b375afc17d2
15. 0xb5b652bba4a5afca56c21031d89b1c06361563aaf54ccc8541c296ceeb2b66fa

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4