Evidence row 580333

What was observed

{
  "count": 9,
  "tools": [
    {
      "description": "Computes the next UTC fire time for a 5-field cron expression (supports steps, ranges, lists, and month/weekday names). Body {expr, after?} -> {ok, next, epochMs}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "after": {
            "description": "ISO timestamp to search after (default now)",
            "type": "string"
          },
          "expr": {
            "description": "5-field cron expression",
            "type": "string"
          }
        },
        "required": [
          "expr"
        ],
        "type": "object"
      },
      "name": "cron_next_run"
    },
    {
      "description": "JSON DNS-over-HTTPS lookup for A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, CAA. Body {domain, type?} -> {ok, domain, type, status, answers[]}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "domain": {
            "description": "Hostname to resolve",
            "type": "string"
          },
          "type": {
            "description": "Record type (default A)",
            "enum": [
              "A",
              "AAAA",
              "CNAME",
              "MX",
              "TXT",
              "NS",
              "SOA",
              "PTR",
              "SRV",
              "CAA"
            ],
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "dns_lookup"
    },
    {
      "description": "Structured WHOIS via RDAP for any domain: registrar, IANA id, statuses, expiry/registration dates, nameservers, DNSSEC. Body {domain} -> {ok, found, domain, registrar, status[], events{}, nameservers[], dnssec}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "domain": {
            "description": "Domain name, no scheme",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "domain_whois"
    },
    {
      "description": "Email deliverability check: RFC-style syntax plus live MX probe of the domain. Body {email} -> {ok, valid, formatValid, domainHasMx, mx[]}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "email": {
            "description": "Email address",
            "type": "string"
          }
        },
        "required": [
          "email"
        ],
        "type": "object"
      },
      "name": "email_validate"
    },
    {
      "description": "Popularity and metadata for any public GitHub repo: stars, forks, open issues, watchers, language, license, topics, last push. Body {repo} -> {ok, found, stars, forks, openIssues, language, license, pushedAt}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "repo": {
            "description": "owner/name",
            "type": "string"
          }
        },
        "required": [
          "repo"
        ],
        "type": "object"
      },
      "name": "github_repo_stats"
    },
    {
      "description": "Repairs malformed LLM JSON: strips Markdown fences and prose wrappers, fixes trailing commas, converts Python literals (True/False/None) and single/unquoted keys, removes comments, recovers balanced JSON from truncated output. Body {input} -> {ok, repaired, applied}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "input": {
            "description": "Malformed JSON text",
            "type": "string"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "name": "repair_json"
    },
    {
      "description": "Produces a unified diff plus added/removed counts between two texts (LCS line diff, configurable context lines). Body {old, new, context?} -> {ok, identical, added, removed, hunks, unified}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "context": {
            "description": "Context lines per hunk (default 3)",
            "type": "number"
          },
          "new": {
            "description": "Changed text",
            "type": "string"
          },
          "old": {
            "description": "Original text",
            "type": "string"
          }
        },
        "required": [
          "old",
          "new"
        ],
        "type": "object"
      },
      "name": "text_diff"
    },
    {
      "description": "Extracts clean text, title, headings, links, URLs, and emails from HTML or plain text. Body {input, numbers?, codeBlocks?} -> {ok, source, title, headings, links, urls, emails, text}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "codeBlocks": {
            "description": "Keep pre/code blocks",
            "type": "boolean"
          },
          "input": {
            "description": "HTML or plain text",
            "type": "string"
          },
          "numbers": {
            "description": "Keep numeric strings in text output",
            "type": "boolean"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "name": "text_extract"
    },
    {
      "description": "Converts a YAML subset (block maps, sequences, nested indentation, scalars, comments) into JSON with no runtime dependency. Body {input} -> {ok, value, warnings}. Costs $0.001 USDC on Base per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "input": {
            "description": "YAML document text",
            "type": "string"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "name": "yaml_to_json"
    }
  ]
}

What the leaf hashes

{"body":"db5e904565266de02083d4c88e94acb49f936d436cb8e59f92fa669a314a15ff","id":580333,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143710341234,"prev":null,"subject":"99078c13-cf46-498f-a21e-f370a58ae1e5","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. 0x7f0890c2006029b86737cf353107d8c6dabcdaff03b392b398607ab7271aa1b8
2. 0x7168a85dd9fda71599d3ddbb381be06016d6d4013219482bc00327328dd38d24
3. 0x836bd62acc7f6fe2dd92260d239b24c390816ee48e86aecb303405eb091c0933
4. 0x7f3c0106a3cc860febd4532a10317b8b544551316818d6cfb4d7e567c0fc1958
5. 0xee4f95515d2265bd0a28032a310ad465cac431f09191b6ab0297edad562f090e
6. 0xea3d616afdea03b275b3ca21df71df1916c86dac99f46fb9ccdfdb0860de8645
7. 0x2eb4805bf006e6c5c842890700544783703273b1fceda716e1b2492a28d4f4a7
8. 0x55adc22ecd2aec03015fefcabeb89c4c5d10da8ddde9b74bb9d19a878eceecf2
9. 0x416ab53fc909d8fcab2e42833be58d84e803c26f1a4dda67ee75bc73023cb310
10. 0x570cb12c20cd5012b2bb587c01cdd898d9e25ca22fad8fbf3449412b030ca1ec
11. 0x868e095a0e024f898de0327309385070aef4560771a159bdc58d9e1c53b28672
12. 0x4b98c7145f5ead65ac9430579969acab10bc70758d3533f5a4fd4dbb462a2b61
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4