Evidence row 222134

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Find out whether to send a transaction now or wait — returns the current recommendation, expected savings, and when the next cheaper gas window is predicted.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "best_time_to_transact"
    },
    {
      "description": "Estimate the current USD gas cost of a specific Ethereum mainnet action (ETH transfer, ERC-20/USDC transfer, Uniswap swap, or NFT mint), or a custom gas-units amount, at the chosen priority tier.",
      "inputSchema": {
        "properties": {
          "action": {
            "description": "The transaction type. Use \"custom\" with gas_units for anything else.",
            "enum": [
              "eth_transfer",
              "erc20_transfer",
              "uniswap_swap",
              "nft_mint",
              "custom"
            ],
            "type": "string"
          },
          "gas_units": {
            "description": "Required when action is \"custom\": the gas units the transaction uses.",
            "type": "number"
          },
          "tier": {
            "default": "average",
            "description": "Priority tier: low (cheapest), average, or high (fastest).",
            "enum": [
              "low",
              "average",
              "high"
            ],
            "type": "string"
          }
        },
        "required": [
          "action"
        ],
        "type": "object"
      },
      "name": "estimate_transaction_cost"
    },
    {
      "description": "Get the current Ethereum mainnet gas price (low / average / high, in Gwei) plus the live ETH/USD price and a send-now-vs-wait recommendation. Use this to answer \"what is the gas fee right now\".",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_current_gas"
    },
    {
      "description": "Get the current ETH/USD spot price and its 24-hour change.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_eth_price"
    },
    {
      "description": "Get the forward-looking hourly Ethereum gas forecast (up to 24 hours ahead) with the predicted cheapest window. Use for \"when will gas be cheaper\", \"should I wait until tomorrow\", or planning a transaction.",
      "inputSchema": {
        "properties": {
          "hours": {
            "default": 12,
            "description": "How many hours ahead to return (1-24). Defaults to 12.",
            "maximum": 24,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "get_gas_forecast"
    },
    {
      "description": "Get recent historical Ethereum mainnet gas prices over a chosen window, with min/max/average. Use to answer \"what has gas been doing\", \"was gas cheaper yesterday\", or to compare the current price against a recent baseline.",
      "inputSchema": {
        "properties": {
          "range": {
            "default": "1d",
            "description": "Look-back window. Defaults to 1d.",
            "enum": [
              "30m",
              "2h",
              "6h",
              "1d",
              "7d",
              "30d"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_gas_history"
    },
    {
      "description": "Compare live Layer-2 gas fees across Arbitrum, Base, Optimism, and Polygon (Gwei and the estimated wallet fee in USD for a standard transfer), and identify the cheapest right now. Use for \"cheapest L2\" / \"L2 gas fees\" questions.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_l2_gas"
    }
  ]
}

What the leaf hashes

{"body":"e17e84436c22c32337924a5ca39e430a07cfb33ac008a1128d1f0124697e2512","id":222134,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793027827822812,"prev":null,"subject":"0c5ba30d-6d65-4464-b785-4fdea9ab2679","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. 0x2a91f3f8258132ef0a4cb7014be54e62ff7761e11a6341064baa2dd6acbe5daf
2. 0xf78ecef4ae0121893d14d17f5f19db01b680525c88546380a891e612f407ee95
3. 0x9aec7038a44f9daa0db01ea978cdf2786bad6733302e62261f4b1df35fbbdcde
4. 0xe1449e1855c9d4b27d6f8b6f161932f2cd85d76ab20a9b3da652cd4f5c349fbb
5. 0xe511f739ca916a30179bd769f5aeae01693306c47619a609480d4249cb9a3b51
6. 0xac1013dc738e6c9a3e11677653782e40b8c5c3c1a897512039a094a91eea501a
7. 0x9f165ce5daff54276c097b5f342e4d9149652ee339094d2894b6c5d218d8af7f
8. 0x652df0094190e0ed7f34254df1a48140e5cea1e2eb32306269765ddbf2743e2a
9. 0x306383bec1eb54407a4a3a9ada117afeabbe1add493fca2695b1f0d5ebff1cd1
10. 0x4794af3ce7667b405167c54a941da6ec756bac415e8d990090cc042e6212d8fc
11. 0x7b0bb4483af5e03d9f02e715a84d790ec3df1fc57d38f1d1a5ed296a7e822d7f
12. 0xeab0020f03650c1a79ed79927ae9d808c59a41295a86d1285582516590c954e6
13. 0x16a8fb19a5e4f4535e7cb3fce5c15ecfa188586bb74e347ee71164f8af27dfe1
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae