Evidence row 551887

What was observed

{
  "count": 2,
  "tools": [
    {
      "description": "Return cursor-paginated, approved ResolveMesh compatibility events using the same allowlisted filters as the public JSON API.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "client": {
            "enum": [
              "chatgpt-web",
              "chatgpt-desktop",
              "claude-code",
              "cursor",
              "codex",
              "gemini-cli",
              "vs-code",
              "windsurf",
              "copilot-coding-agent"
            ],
            "type": "string"
          },
          "cursor": {
            "maxLength": 2048,
            "type": "string"
          },
          "limit": {
            "maximum": 100,
            "minimum": 1,
            "type": "integer"
          },
          "severity": {
            "enum": [
              "INFORMATIONAL",
              "ACTION_REQUIRED",
              "BREAKING"
            ],
            "type": "string"
          },
          "since": {
            "type": "string"
          },
          "tool": {
            "enum": [
              "github",
              "linear",
              "figma",
              "notion",
              "atlassian",
              "stripe",
              "supabase",
              "sentry",
              "vercel",
              "neon"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "compatibility_changes"
    },
    {
      "description": "Return the source-backed ResolveMesh compatibility result for one allowlisted client and hosted-tool pair.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "client": {
            "enum": [
              "chatgpt-web",
              "chatgpt-desktop",
              "claude-code",
              "cursor",
              "codex",
              "gemini-cli",
              "vs-code",
              "windsurf",
              "copilot-coding-agent"
            ],
            "type": "string"
          },
          "tool": {
            "enum": [
              "github",
              "linear",
              "figma",
              "notion",
              "atlassian",
              "stripe",
              "supabase",
              "sentry",
              "vercel",
              "neon"
            ],
            "type": "string"
          }
        },
        "required": [
          "client",
          "tool"
        ],
        "type": "object"
      },
      "name": "compatibility_lookup"
    }
  ]
}

What the leaf hashes

{"body":"9d21c7f6c6f19981311b0aba14e309d9316c97d30e1582fbf3d4096983558083","id":551887,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793133449219284,"prev":null,"subject":"8b9f985f-851b-4b3e-b8d4-b515bd3c9700","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. 0x2da099dd258bf5448ec05827f46fd8ea03c16cc6cbdfa1fd6d50717c6a459c14
2. 0x205b251692048d707cecc94c7eea681a1cddbc27b202339b58238e13aeef990c
3. 0xf12fbe4eb250fc76eed4a22835a915afb1669f6b14a9d98aaf7408cb3274bcc4
4. 0x4f6f745f7f814096edea475e671c67553b957f865c86509db8ddb65d0bfdf753
5. 0x698438f357517d88689a06441cbfcca6e9eac044ead1b929d3c381d08de7073e
6. 0x10b995e26114e012fae326f5fa8ca0914dc63b9e64bde1f703d62d4934bf5d98
7. 0x624538c134585e9775a6df0aaa460746f30bd901d05bcc64e7214e5892f51e4d
8. 0x6394519f7369b686659cd62b608d4ea55dc2b72ea9261e6bf0fc7b24763c0858
9. 0x6507250beda223d2ff44b68af52955dc8fba7a24c120840bb50bb35def0d114a
10. 0xef0be44ded6305b2033091a1b577c49f6768a048039212c84021ae88853e7b6d
11. 0x565e5d1bdde53cb504eca7d80d5086f778250d6d1d5f559fca69ef359e9343cf
12. 0xbba37928cada6ab17c662e87851d940dd07cc2323bc089da77c1f353a0c5e936
13. 0xf9e544d10b80657275e1e196da89ba5336a7cc49eaa0d6d801fb5d632cf5deec
14. 0x8ff18b1523f9fbdd16a5796cbe184b46854c06256508af8de5509b598370c725
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4