Evidence row 574340

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "List all registries being searched with live status and total server counts.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "catalog"
    },
    {
      "description": "Detect payment protocol for any MCP server and route to the correct payment execution. Supports x402 (USDC on Base), MPP (Stripe), and prepaid API keys.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "action": {
            "default": "fund",
            "description": "fund | execute | check",
            "enum": [
              "fund",
              "execute",
              "check"
            ],
            "type": "string"
          },
          "agent_id": {
            "description": "Optional identifier for this agent",
            "type": "string"
          },
          "amount": {
            "default": 5,
            "description": "USD amount to fund if prepaid (default 5)",
            "type": "number"
          },
          "endpoint": {
            "description": "MCP server endpoint URL",
            "type": "string"
          },
          "payload": {
            "additionalProperties": {},
            "description": "Request body for execute action",
            "type": "object"
          }
        },
        "required": [
          "endpoint"
        ],
        "type": "object"
      },
      "name": "checkout"
    },
    {
      "description": "Get full metadata for any MCP server. Accepts reverse-DNS name, endpoint URL, or plain keyword. Includes payment protocol detection.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "identifier": {
            "description": "Reverse-DNS name, endpoint URL, or plain keyword",
            "type": "string"
          }
        },
        "required": [
          "identifier"
        ],
        "type": "object"
      },
      "name": "inspect"
    },
    {
      "description": "Search MCP servers by server title/name, description, or by the tools they provide. Accepts natural language capability queries like 'send emails', 'search the web', 'create pull requests', or direct server names like 'GitHub' or 'Stripe'. Results are ranked by relevance: title match first, then tool name match, then description. Each result includes the server's tool list so you can confirm it does what you need.\n\nSet limit based on the type of request you received:\n- Prompting (general/exploratory — user is browsing or asking broadly): use 20-30\n- Task assignment (user delegated a goal for you to execute autonomously): use 10-15\n- Instruction/directive (specific command with a clear target server in mind): use 3-5",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 20,
            "description": "Max total results (default 20, max 50). Use 20-30 for exploratory prompts, 10-15 for delegated tasks, 3-5 for specific directives.",
            "maximum": 50,
            "minimum": 1,
            "type": "number"
          },
          "payment_protocol": {
            "description": "Filter results to servers using specific payment protocols. x402 queries x402.direct, mpp queries mppscan.com.",
            "items": {
              "enum": [
                "x402",
                "mpp",
                "prepaid-api-key"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "query": {
            "description": "Server name/title (e.g. 'GitHub', 'Stripe') OR a task/capability (e.g. 'send emails', 'search the web', 'create pull requests', 'analyze crypto prices')",
            "type": "string"
          },
          "sources": {
            "description": "Filter to specific sources: official-registry, glama, mcpso, x402direct, mppscan",
            "items": {
              "type": "string"
            },
            "type": "array"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    }
  ]
}

What the leaf hashes

{"body":"056c6829b24581a4856d44805cf084a14711f8088060b5f264bc1783718c0281","id":574340,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793141495672271,"prev":null,"subject":"b4369718-a7a5-492a-8ecb-19f246d49351","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. 0xe4516369f75511054eb64ec8d562e38b5576ea8a77ceacb2035590e363580356
2. 0x26d6147d8375c1dd66a26f68ea34e98e28ccaddc84ca16f8085e88a24240f330
3. 0x790974b74eb43edc7c131f538af4336a4dff6aa31bea1c7631d7d2c4edcc8623
4. 0xa1b892234e96b58c94da8d2ebc785c1a72c31c0fa8edca416063bec9783e99d1
5. 0xe1494fa8b75acd968d7e4d340988f9fad514dd603dad5a6b7546f35fdf245611
6. 0xec8c2e220ebef893e01650cb4c6cc4089305391da48fb1d6094e4c22f3cb0a9d
7. 0xc71d1d82c68d67d29ee02d56183e1e3e6987a339e26cecc8f5e5d28fcc47004a
8. 0x8b759a828d223d87520c49eb8f3c7108477eb5df3b5e1831bf45648d54db1743
9. 0xdfc18a91dd4961bb645aebb9edc2ef667d6b1075eaac2c5f9baa2843d176ed24
10. 0xf43ec63a3f9fa25173180abb7567056ab830871cfcea8062ffeb94b071fa8fa6
11. 0x79b5848e3de58e55a9bc31f0b9fac7eaaa02831210ebc21da7db3a90dc579124
12. 0xc1d2a56a84338ae3b69b3423e631069ac48cf802439f26d41941f651ac2c28a1
13. 0xd98ea318b514153f74841c90aff18a807e61314ec99610bf3bdbb7219da01cbd
14. 0xf72dee7a0c7534cb19ede4959b957b00c0a8285c36ad49dd2ce1c1092bf60d93
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4