Evidence row 1288299

What was observed

{
  "count": 9,
  "tools": [
    {
      "description": "Same-site URLs found on the page plus sitemap URLs (robots.txt Sitemap lines or /sitemap.xml), deduped, up to limit (default 200, max 1000). Paid: map $0.001 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "maximum": 1000,
            "minimum": 1,
            "type": "integer"
          },
          "url": {
            "description": "Public http(s) page or site root.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "map"
    },
    {
      "description": "Title, meta description, canonical, lang, OpenGraph and Twitter tags, and parsed JSON-LD blocks of an HTML page. Paid: metadata $0.001 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "url": {
            "description": "Public http(s) HTML page.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "metadata"
    },
    {
      "description": "A public PDF URL in, its text page by page out (up to 50 pages, 10 MB; text-based PDFs). Paid: $0.008 USDC on Base via x402 (charged only when text comes back). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "pages": {
            "description": "Optional page numbers (up to 50): [1, 2] or \"1-3,7\".",
            "oneOf": [
              {
                "items": {
                  "maximum": 10000,
                  "minimum": 1,
                  "type": "integer"
                },
                "maxItems": 50,
                "minItems": 1,
                "type": "array"
              },
              {
                "maxLength": 400,
                "type": "string"
              }
            ]
          },
          "url": {
            "description": "Public http(s) URL of a PDF.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "pdf"
    },
    {
      "description": "Free. Our price for a tier, how many providers are healthy right now, estimated latency, and payment status.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "tier": {
            "enum": [
              "standard",
              "lite"
            ],
            "type": "string"
          },
          "url": {
            "description": "Public http(s) page to convert to markdown.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "quote"
    },
    {
      "description": "Page to clean markdown, routed to a healthy provider with automatic failover. Paid: $0.008 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "url": {
            "description": "Public http(s) page to convert to markdown.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "scrape"
    },
    {
      "description": "URL to markdown: any public page as clean markdown, with failover (/v1/scrape/lite: $0.003 per page). Paid: $0.003 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "url": {
            "description": "Public http(s) page to convert to markdown.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "scrape_lite"
    },
    {
      "description": "The visible part of a public page (1280x800 viewport, JavaScript rendered) as a base64 PNG in image_base64. Paid: $0.008 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "url": {
            "description": "Public http(s) page to capture.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "screenshot"
    },
    {
      "description": "The whole scrollable page (JavaScript rendered) as a base64 PNG in image_base64. Paid: $0.012 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "url": {
            "description": "Public http(s) page to capture.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "screenshot_full"
    },
    {
      "description": "A query in, up to 10 ranked web results (title, url, snippet) out. Paid: $0.008 USDC on Base via x402 (charged only on success). Unpaid calls return x402 payment requirements; retry with _meta[\"x402/payment\"].",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "description": "Max results (default 10).",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Search query.",
            "maxLength": 400,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    }
  ]
}

What the leaf hashes

{"body":"659fe8e13e4542ee5958cf71ab60c9c7addc3aaab9ba51ef2f5db41e4061a62e","id":1288299,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793391589267978,"prev":1014413,"subject":"f4d54551-01d4-4c04-9467-bd70b9d0e82b","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0xe4c314cc3f0e507820dd0eb96ce77b90a550a0e56067c5a9a786b1e7267c7080
2. 0x9b58a48cc6193cc14e62f17153a13bb353be309d67eaf0c4127d301568740547
3. 0x82b009dc23a9ac46106443be6f762b871a1c1e0d6c0cd1b8c6d50375e097e3f0
4. 0xe0c0490fe6ddd2b750a7e2628d8804c5fec2f03922a2f81ad6613aee995e8871
5. 0x5f9ecd80e8e90ad9d015a19a60aabde7c721e0282389e643046b821917978238
6. 0xe87f5a12666d5132a7eaeb40d9c24dbca60aa2c051581d863ab6d0f08fe2722e
7. 0x12f6fe515621d1dcf68c2bbe7637d4db96e5fc4e4ec1ea5edd4d33f994a6bd43
8. 0xbb21d7053f1f14ddaaa63d8d759a862b68ca9e6b9b2efd20bd96a21c86213fef
9. 0x987f37e05523fdf4928901cf99fd6253e1555138f277227048c7c7084ea25da5
10. 0x8a10fb0a3c74c7daf69e6680dc961b6d5477c1971040e10bc6fd58d7df2d885c
11. 0x87432c8539926003bf4ca7e853841aca0a44163565bdd5782c85888ccb003210
12. 0x0221926da48f1be0858f9f5f2ad1881d381008bbf8c70e9c06bb1a63fd6faa7e
13. 0xfbc54bb68398dda4b439809764b90c546b18332d8f5c47b62a26f520efc65735
14. 0x3a7a0fa82cbf8d3f1546fc6f89c9a5f35e025db7170b70e3f2dcd72b4ebb0f8e
15. 0xea7df1002501052c124b5aed2b1a5df3d59be54394c6a8539c86fad1df339a9e
16. 0xfbe61dc2d59668ac573e5eab865747e21d38bf2fe4c64762beef01f1018a4dea
17. 0x71e74c274b23c9047354edb6dcd2c654415e3986b8bd875dae992996ea12e22b
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861