Evidence row 998986

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Check whether an x402 endpoint is safe to pay: it looks at what the endpoint asks you to pay and to whom and compares that with its history. It never pays the endpoint. Unreachable endpoints and bad input are not charged. Free: 1 a day per IP (counted across the HTTP routes and MCP), then $0.005 per call via x402.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "https URL of the x402 endpoint",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "endpoint_check"
    },
    {
      "description": "Check a Base token (0x address) or URL for scam and rug risk before buying, or a wallet against the sanctions, USDC-blacklist and known-scam-deployer lists. Returns action OK | CAUTION | AVOID | VERIFY_MORE with the facts behind it and a ready-to-show summary. null means unknown, never safe. Free: 10 a day per IP (counted across the HTTP routes and MCP), then $0.008 per call via x402.",
      "inputSchema": {
        "properties": {
          "amount_usd": {
            "description": "Your trade size in USD: adds a sell quote at that size (fields.sell_at_size) and the price impact",
            "type": "number"
          },
          "compact": {
            "description": "No summary text, no disclaimer, no null fields",
            "type": "boolean"
          },
          "quick": {
            "description": "Faster check (about 5 s) with fewer facts; skipped facts are null",
            "type": "boolean"
          },
          "target": {
            "description": "Base 0x token address, wallet address or URL",
            "type": "string"
          }
        },
        "required": [
          "target"
        ],
        "type": "object"
      },
      "name": "scam_check"
    },
    {
      "description": "Verify an on-chain payment from its transaction hash on Base, Ethereum, Arbitrum, Solana or Bitcoin (chain is detected if omitted). Returns status and verified. pending, unknown and not_found answers are not charged. Free: 1 a day per IP (counted across the HTTP routes and MCP), then $0.003 per call via x402.",
      "inputSchema": {
        "description": "Aliases accepted: network=chain, amount=expected_amount, to|recipient|payTo=receiver, asset=token, txid|signature|hash=tx_hash, from|sender=expected_from",
        "properties": {
          "chain": {
            "description": "Omit to auto-detect",
            "enum": [
              "base",
              "ethereum",
              "arbitrum",
              "solana",
              "bitcoin"
            ],
            "type": "string"
          },
          "exact": {
            "type": "boolean"
          },
          "expected_amount": {
            "description": "Decimal string, human units",
            "type": "string"
          },
          "expected_from": {
            "type": "string"
          },
          "min_confirmations": {
            "description": "Can raise, not lower, the chain default",
            "type": "integer"
          },
          "not_before": {
            "format": "date-time",
            "type": "string"
          },
          "receiver": {
            "type": "string"
          },
          "token": {
            "description": "Symbol or contract/mint; default USDC (EVM), SOL, BTC",
            "type": "string"
          },
          "tx_hash": {
            "type": "string"
          }
        },
        "required": [
          "tx_hash",
          "expected_amount",
          "receiver"
        ],
        "type": "object"
      },
      "name": "verify_payment"
    }
  ]
}

What the leaf hashes

{"body":"ab5ababcf85a4e03798fd71ee4aa0d4760cbbdfc6974aa145e6d28f1f06a18f4","id":998986,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793252685391730,"prev":null,"subject":"7d937e04-d11b-4f2d-920b-e96fc3490d81","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x709a9461f5265351bdcac46cd0dee092b8cf4292b8ffa9546e853cdf38951f1a
2. 0x74587ed72ee50069018d22aabd9d055d39cf70ce075d67bc94b8b17a24976488
3. 0x436c0bbbeeabf3258b628490dc485bf3429c6e231e2b343a3aa190cddbf5d44a
4. 0x65985220550b71ee0b819ed0a940c020e69872a776c3608b43ffe47c34bf2fb6
5. 0x10110723e182925c8ef22505fb54b08429229b94820db4a12c81049a519fc82e
6. 0x9d7e2d56bcbbf01766449820c74d3a3d25b092fdbe3063b80db7332264be7731
7. 0x8a07c735e995554da39169e77490280e02e7e112396f5f1c8b2779782ad7a4d0
8. 0xad0a49b6828b831aaf0538f8f232af35d4620ffae9176db5843226679dd3b43d
9. 0xa82610f286e736402a7efb67877b1d74a0344251bb5024e8717c574ed7e8d18f
10. 0x0dd5965f0739df1f7bb357681c6d8932ecc180e95c3b91ee8fe14a3fdef6e4c7
11. 0x9f6d47dfd46d4e77d1730088deeca7997dc2066a4fb5d87d067def0ab194f961
12. 0xd5c55ab16bad102bac8b47aa3438cebb9c39071153f5507f4d11b2abb2ee93f3
13. 0xbc3fd8e509855b2d6ee4c13ed5f7f098e0a2473c66efc60e409ad0e77322a80f
14. 0xa07c03f1ff4a33c8a0105ab761d762ba211920a4e09af3e5ae84b51a3c4cf51b
15. 0x60b5befbd81f025904c8a3936b7ba86e3245ad5b37c615d01d42aa3227e3ed2e
16. 0xe2d603cd6f987214550319ad4fa39952b6098bc5c1b20893b6b80e8d82a79934
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1