Evidence row 741608

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Lint an x402 endpoint's unpaid 402 and report, per directory, whether it meets what x402dash (unpaid GET must return 402), x402scan (OpenAPI x-payment-info or /.well-known/x402, input schema), the402 (validator 'payable') and the CDP/PayAI Bazaar (bazaar extension, description <= 500 chars, non-tunnel https host; listing then needs one settled payment) were known to check. Never pays. Free.",
      "inputSchema": {
        "properties": {
          "method": {
            "description": "Default auto: tries both",
            "enum": [
              "auto",
              "GET",
              "POST"
            ],
            "type": "string"
          },
          "url": {
            "description": "The paid x402 URL",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "check_directory_readiness"
    },
    {
      "description": "Lint a PaymentRequired object you already have (decoded JSON, a JSON string, or the raw base64 PAYMENT-REQUIRED header). Same field/value checks as lint_x402_endpoint, no network access. Free.",
      "inputSchema": {
        "properties": {
          "payment_required": {
            "description": "Object, JSON string, or base64 header value"
          },
          "url": {
            "description": "Optional: the URL it was served from, to check resource.url",
            "type": "string"
          }
        },
        "required": [
          "payment_required"
        ],
        "type": "object"
      },
      "name": "lint_payment_required"
    },
    {
      "description": "Unpaid lint of an x402 endpoint: fetches the 402 (GET and POST), then checks the challenge (version, accepts[] fields, CAIP-2 network, payTo/asset/amount sanity, EIP-712 name/version, timeouts, resource), transport (redirects, cache headers, CORS) and discovery files. Returns findings with ids, severities and fixes. Never pays. Free.",
      "inputSchema": {
        "properties": {
          "method": {
            "description": "Default auto: tries both",
            "enum": [
              "auto",
              "GET",
              "POST"
            ],
            "type": "string"
          },
          "url": {
            "description": "The paid x402 URL",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "lint_x402_endpoint"
    }
  ]
}

What the leaf hashes

{"body":"29d9ac47980f10bde3993be503549f100f6985df01e9fff3f619fea5a9e2e500","id":741608,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793170832609663,"prev":null,"subject":"c9682a93-e16c-4f11-a8a8-04f3ea0b0d59","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x7e8746d694694c517bb5b75565f10b7a1c6517c9969297dcfcaaa2dc4805e2b0
2. 0x3c528ae240be6687a7506467c5e812a28133a28ac4469071b41f22d6743a1d5c
3. 0xd961dfb96b7c022497c73cf8697cba75603c32323ec5e9be6a326789f44845bf
4. 0x8c488b0d4574c03486f3fdcefb3f4ea83aa25dd92bc29106d860a61d617a5ce4
5. 0xa1d3cf6b0116d801c38f32150fff1916827e209c120c25473f49796794a37d36
6. 0xadce87fdeae8dd2c91dab240fd074cf379d24423ec8bc847eef2f2b49d92f534
7. 0x721431e9a7ff6a39f8ac7c51574f5a688a7a1bd53ec627f1b21b333c0c2b7cda
8. 0x65bc3bed3b891056fc2591f8136c33cedbe93d381212245d85d9c186d56b78cf
9. 0xc53e583ebdd2c64768e2f66b391c7622882b55a00e8d9b5e560666d2328bd7f7
10. 0x0080186a646eb2f73c8fb930c4477d978b42bb094b89baf3dae18eea99307d6b
11. 0x0736048f82aec2b6271d333dcc2e3d6b83d61035358a6f0ae67b8db47875194c
12. 0xf1d12da4d227242f97d9bc58d06140106dee16d6d541ebe113d7c7f6ab2d8b67
13. 0xf042be8757f2f3ef070e717e38a7b0ad951d74298e721ac0b2e7855db790e392
14. 0x40581185279a8bf075dca3a4c3a5648ec6f62098ba7402cbc097d5cc707e0840
15. 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
16. 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae