Evidence row 257382

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "BEFORE YOU PAY a listed x402 URL: bazaar price vs the live 402 price, and whether that payee is one wallet. PAY / MISMATCH / SINGLE / UNLISTED / DEAD. Two cents. Not the one-cent live/dead ping.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "The x402 resource URL you are about to pay",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "listing_check_before_pay"
    },
    {
      "description": "BEFORE YOU PAY Messari ($0.10–$0.25+): get the paid URL that returns SKIP_MESSARI (use cheaper Pathmint/Signals), PAY_MESSARI (exact official endpoint + price), or ABORT (spoof/ghost). Two cents. Not Messari data.",
      "inputSchema": {
        "properties": {
          "q": {
            "description": "Job or question you were about to pay Messari for",
            "type": "string"
          },
          "url": {
            "description": "Optional 402 URL you were about to pay",
            "type": "string"
          }
        },
        "required": [
          "q"
        ],
        "type": "object"
      },
      "name": "messari_gate_before_pay"
    },
    {
      "description": "BEFORE YOU PAY an x402 402: get the paid URL to ping live vs dead/ghost. One cent. Use when holding Payment-Required, before sending USDC to a payTo. Ghost x402, is this endpoint live, verify before pay.",
      "inputSchema": {
        "properties": {
          "payTo": {
            "description": "Optional 0x payTo from the 402",
            "type": "string"
          },
          "url": {
            "description": "The x402 resource URL you are about to pay",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "ping_x402_before_pay"
    },
    {
      "description": "x402 seller payments: outside USDC to one payTo, the last outside payment, self-traffic removed, and live price vs the listing. Two cents. Pass url or payTo. No stake minimum.",
      "inputSchema": {
        "properties": {
          "payTo": {
            "description": "0x wallet that receives USDC. Use alone or instead of the 402 payTo.",
            "type": "string"
          },
          "url": {
            "description": "x402 resource URL whose payTo should be scanned",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "seller_payments"
    },
    {
      "description": "Before buying or approving an ERC20: honeypot / token-risk check. Not an x402 ghost ping.",
      "inputSchema": {
        "properties": {
          "address": {
            "description": "ERC20 contract",
            "type": "string"
          },
          "chain": {
            "description": "base (default), ethereum, bsc, arbitrum, optimism, polygon",
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "token_risk_before_buy"
    },
    {
      "description": "Before sending USDC ≥ $0.50 on an x402 402: compile CLEAR / CAUTION / ABORT for that payTo (ghost, wrong rail, overcharge). Not the one-cent ping.",
      "inputSchema": {
        "properties": {
          "amountUsd": {
            "description": "USDC you are about to send",
            "type": "number"
          },
          "payTo": {
            "description": "0x payTo from the 402",
            "type": "string"
          }
        },
        "required": [
          "payTo",
          "amountUsd"
        ],
        "type": "object"
      },
      "name": "x402_pay_clearance"
    }
  ]
}

What the leaf hashes

{"body":"db4632764b71b241a849c38664727280a3061dbe81c85763645e76e8173153e2","id":257382,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029710353932,"prev":null,"subject":"cc9490d9-8ae9-4044-b1c8-2a002e215da7","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xd4c241ce9a4e208b6c31fc4a066839c839df5f3a2b0c18c84cb6a35e18df5a48
2. 0x88cc58c4d1ef67656515e1bbc075b4a4f6c24d07f9d58e1a5c4991536127b17c
3. 0x3d5519a3b73b6282e99955ad568f6d9cc8ac32aa1f18a3e0390c6d964023fac6
4. 0x17913d7176732e5fbdf4472d49474b8e3d05a172f2e7bec6d661b308751d73b1
5. 0x34022379c04617d315c618682253714674cfbd7808f79a168bcbe52f4fd200fe
6. 0xb9c4def8fd3b132d5057cca9b12249e18f7af8fc81623accb0d296a7ba56a838
7. 0x4cb0791a4f5b03fd1564d46b3630eb15ed6594dac13d86fe9bf4d17e440e24ec
8. 0x4bb1f29a765aa2660cef4713eae1ebd25621995f55675d05a60f92d4ed7581e7
9. 0xe68852d059df1a2763d9eb9e407ab688f37fed3121a3f760478f3f9ea3d2d8a0
10. 0x692eeb197968cd5781b6a621b2983348b30fee6c6aea503398abf2207d9af77b
11. 0x13af2618b202e3256bff92107d30a646eb897d2992ea1f3e08e75bf4bef84c31
12. 0x7026808261896a203198354548e5e8cabce4a06e89d077c172084841b47ae119
13. 0x3199db04c2c73c3483386a86bf503eafde5af103465608156e2e5f42e72a6fbe
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae