Evidence row 567003

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "AI crawler access report for a URL: robots.txt verdict for 20 tokens (GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, Google-Extended, Applebot-Extended, PerplexityBot, Meta-ExternalAgent, CCBot, Bytespider, Amazonbot and more) grouped by training/search/user purpose, plus page meta robots, X-Robots-Tag (noindex/noai) and llms.txt presence. Deterministic, no AI. Price: $0.002 USDC per call via x402 (Base); the first 5 calls per day per client are free.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "Site or page URL",
            "examples": [
              "https://www.theguardian.com/"
            ],
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "ai_crawler_access"
    },
    {
      "description": "Crawl-permission preflight for agents and scrapers: fetches the site's robots.txt and evaluates the URL for a user-agent token per RFC 9309 (group by product token else *, longest match, Allow wins ties, * and $ wildcards, 4xx=allow all, 5xx=disallow all). Returns allowed, the deciding rule and line, crawl-delay and sitemaps. Deterministic, no AI. Price: $0.001 USDC per call via x402 (Base); the first 5 calls per day per client are free.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "Page URL to test",
            "examples": [
              "https://www.nytimes.com/section/technology"
            ],
            "type": "string"
          },
          "user_agent": {
            "description": "Crawler product token, e.g. GPTBot or MyAgent. Default *",
            "examples": [
              "GPTBot"
            ],
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "robots_check"
    },
    {
      "description": "Finds a site's sitemap (from robots.txt, else /sitemap.xml) or checks the sitemap URL given, and validates it: urlset vs sitemapindex, entry count against the 50,000 limit, lastmod format and range, relative/off-host/duplicate/http URLs, gzip support. Returns sample URLs or child sitemaps. Deterministic, no AI. Price: $0.002 USDC per call via x402 (Base); the first 5 calls per day per client are free.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "Site URL (discovers the sitemap) or a sitemap URL",
            "examples": [
              "https://www.python.org/"
            ],
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "sitemap_check"
    }
  ]
}

What the leaf hashes

{"body":"d8b38efa0bd6914b555c50bfc83b3ed8f434833c30eb2b78b6444b3127e41634","id":567003,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138584246393,"prev":null,"subject":"b6510ef5-2f81-4b02-abbd-ea0dfbd14084","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. 0x193009e813c2737c8d9b521b549f70a3f2fb054f70a3620ca39954a21f66d79c
2. 0x78750c224e8cf7bf425e8a547b6cbd3615a653838cc2e3d2512f15afc44f03b0
3. 0xc4ee44bc5b7f52cd939215ac5dfc84647184d589a8111aa4258c34062469442c
4. 0xfa727ce0682032ec3f80e32c1739689fe6b44c16f5562c3ec3dd8bfbe7d6640c
5. 0x579dcf1ef2c826af28832b0e25d65fea72dcf08115b1477e2c5640cf4b208895
6. 0x18f591d440f5925a8de0baf37a83cec3ecd6a4b30ece75c25a915abc2d7b4317
7. 0x31583c7bc3ed0e27f7a723c25adb3beb5e8d82c6417e01eb632f5ca75c45c6d1
8. 0xfde76c7df9daf6cd7ba732ca13ca943f0e0915a1ab218367f6cce28084dfa97f
9. 0xa1df58585e78d9acfef007ddf18bcfc263e9621ecaba176698a7741078d6001f
10. 0x92ad4d25cf40a90a064b6296c16b622df60247955858f9880c77f181288069c4
11. 0xee7752a111eb14027f818d33fc8806527d41f25841a61d0dfd8ec487e0c8660b
12. 0x864874d7fe156494acebcd974fb0ea64b6d7d6ef442b90a07ce8adbc57f7d75b
13. 0xca0b37bb3b043ccf0f24c50fccd9c2f22b7e5290df49886008fc2ff55380fdd1
14. 0x2064e3a2b01d0d12d5079bf720a0d0125e9703c55e92de54ad40c302469ec047
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4