Evidence row 577902

What was observed

{
  "count": 8,
  "tools": [
    {
      "description": "Returns a 0-100 Base network health score plus the underlying metrics behind it. Useful before executing a timing-sensitive transaction. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_network_health_base"
    },
    {
      "description": "Returns a 0-100 Ethereum mainnet network health score plus the underlying metrics behind it. Useful before executing a timing-sensitive transaction. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_network_health_ethereum"
    },
    {
      "description": "Returns a 0-100 Solana network health score plus the underlying metrics behind it. Useful before executing a timing-sensitive transaction. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_network_health_solana"
    },
    {
      "description": "Recommends a Base transaction priority fee based on recent network activity, at low/medium/high confidence levels. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_recommended_priority_fee_base"
    },
    {
      "description": "Recommends a Ethereum mainnet transaction priority fee based on recent network activity, at low/medium/high confidence levels. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_recommended_priority_fee_ethereum"
    },
    {
      "description": "Recommends a Solana transaction priority fee based on recent network activity, at low/medium/high confidence levels. Paid: $0.002 per call via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_recommended_priority_fee_solana"
    },
    {
      "description": "Retrieves a stored object by key, base64-encoded. Flat $0.01 per call. Objects over 4MB must be fetched via HTTP GET /retrieve instead.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "key": {
            "description": "The key returned by store_object or PUT /store",
            "type": "string"
          }
        },
        "required": [
          "key"
        ],
        "type": "object"
      },
      "name": "retrieve_object"
    },
    {
      "description": "Uploads a small base64-encoded object to S3-compatible storage. ~$1/GB, $0.01 minimum, capped at 4MB (larger files: use HTTP PUT /store instead). Returns a key for retrieve_object.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "content_base64": {
            "description": "Base64-encoded bytes to store",
            "type": "string"
          },
          "content_type": {
            "description": "MIME type, defaults to application/octet-stream",
            "type": "string"
          }
        },
        "required": [
          "content_base64"
        ],
        "type": "object"
      },
      "name": "store_object"
    }
  ]
}

What the leaf hashes

{"body":"2f4cea86c928a6cfec6e429dd7c4fc87911870c99ac9206c2db706bb350e3e41","id":577902,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793142792011532,"prev":null,"subject":"cfeab70e-0c7d-42c4-9723-edaf4d3905b4","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. 0xd1ddfba49aeb869286e6a289fb8797bc92305005f8606e2416d80d235eaf4888
2. 0xe9200854050b3f1a9655b622da68b2c0c772cfbd7dc9a177e7571c4fcfda5df5
3. 0x5e970be3f4f33f5e819131f0147f181c2c018237ffbfa087230a7ed5d6af3464
4. 0x9c6b6a34c9c6d6e40a58ab353f02b11b362a456ed563739bcc759df32818f462
5. 0x4fe1adbb1cbf098bb7bffac2f5087698da6862c9fe0fbe25e39056d0248686f9
6. 0x525774825b77c03aa8294e959b02931a196d137596475645811739444a82813c
7. 0x8a5090624de5ec676124c4b3599a629fc1de409b7a8cd1a7c7ae33144a7e6436
8. 0xa68e0925ebd284f4116282dbc449a704e1559681a0dfa18eb93df61dd6c966b0
9. 0x649d6704877b8faa02a60b2299d8c5d38a5b30939c2bf195ac13597faa26e4b8
10. 0x6950799c5cde8ab6cd29ff662f5658cbc898f5308dd74e75195675e770eb09bf
11. 0x17dc78b821725e8c90b54bb9b43579db49b460e76d0f7cc8a2a427dc1f9ea96e
12. 0x171aeb7198e4c29bd794c75ee3b02f70c21f3caa4365d2b304c00b891f1bbc94
13. 0xc66f83a1320fe7c1faf22674eeeb7fae22ecd2f0b102d9619a484291f2ce104a
14. 0x8f676edfb4faaa290229d8f4f69ab721fc627424463d62f5146b3d1ca7f2f0c6
15. 0x969cd44e5a4e8dc3110540398fbf689659eb51df735c1cda5d8f021ef9ff5683
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4