Evidence row 253848

What was observed

{
  "count": 2,
  "tools": [
    {
      "description": "Fixed-price reference path: confirms that an x402-aware MCP client can pay and receive a receipt.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "option": {
            "enum": [
              "basic",
              "standard",
              "extended"
            ],
            "type": "string"
          }
        },
        "required": [
          "option"
        ],
        "type": "object"
      },
      "name": "get_paid_sample"
    },
    {
      "description": "Free: checks Base USDC, price, amount, recipient, and facilitator settings before you deploy an x402-paid MCP tool.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "amount": {
            "type": "string"
          },
          "asset": {
            "type": "string"
          },
          "facilitatorUrl": {
            "type": "string"
          },
          "network": {
            "enum": [
              "eip155:84532",
              "eip155:8453"
            ],
            "type": "string"
          },
          "payTo": {
            "type": "string"
          },
          "priceUsd": {
            "type": "number"
          }
        },
        "required": [
          "network",
          "asset",
          "amount",
          "priceUsd",
          "payTo",
          "facilitatorUrl"
        ],
        "type": "object"
      },
      "name": "validate_x402_config"
    }
  ]
}

What the leaf hashes

{"body":"316f3f24b1ac3a7f3b8b35a7e7006f2e2902f380924c43f3c3ad48a9539a9cd9","id":253848,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029282920785,"prev":null,"subject":"a7634cf4-58bc-45f1-981f-e2f269aabc64","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. 0x3df64201f7a89161943ed310366760a2bd803377d5686109a150df2ed42016b3
2. 0x83024a20bb4736fde2ed83d79170f160ebba1905684972ea22d52e743a42ef24
3. 0xfb5d05e34c7a3c7d12c5df28eb9c4d361a152363119dee44ada88fadbea21068
4. 0xc9d9fb4649482422661a85bd4bf5f177d75c8bece9f479fc8dfb2a677e2baee5
5. 0xdb8f3c3d3ba447245d5c11560bc290fc9667742ad7bfc0965cba04122f96994d
6. 0x7a9736b2bd56065fad0f13921938d25049fc551e42fc3a4336a943dfad9a0c03
7. 0x76bb0c05505679114de95472e5f7258c19ba18f365589f2f618cb621745695a8
8. 0x3a05d4b1ed55b53aef8e36a2c49d63abd46163642b637e19c357e8a5d78441d6
9. 0x6ee75bec467137d3dd8fbeb6a0a73db534b8fad2ed1c71dda0cb5e575c756de2
10. 0x45253cd85fd280590cc755c7157b670bb65655451b61e792fbe381fa2fd7507d
11. 0xc900cc76dc3702a3e60eaef3577f119464a6a90c3e2b646253f2ba09c089de97
12. 0xd04df0f7f3be4d014b4cea8172ada286fbcf5bcb32ae1b281704fd75627b661b
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae