Evidence row 570874

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "After a task is already known to have a public GitHub repository, an exact lowercase 40-character commit SHA, and a matching supported static claim, return the pinned contract digest and scope. Do not call for mutable or abbreviated refs, local or private repositories, runtime, builds, tests, deployments, or broad production-readiness claims.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "contract": {
            "enum": [
              "node-package",
              "env-safety"
            ],
            "type": "string"
          }
        },
        "required": [
          "contract"
        ],
        "type": "object"
      },
      "name": "works_public_contract_lint"
    },
    {
      "description": "Fast deterministic preflight for tool-only clients. Call this before any other WORKS tool when eligibility is uncertain, especially for mutable or abbreviated refs, local or private repositories, and build, test, runtime, deployment, or production claims. It does not download a repository or persist data. If eligible is false, stop without calling verification.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "claim": {
            "description": "Use static-evidence for generic signed or static repository evidence; it maps conservatively to node-package. Never use it for build, tests, runtime, deployment, or production claims.",
            "enum": [
              "node-package",
              "env-safety",
              "static-evidence",
              "build",
              "tests",
              "runtime",
              "deployment",
              "production-readiness",
              "other"
            ],
            "type": "string"
          },
          "reference": {
            "description": "Reference exactly as supplied; never expand a branch, tag, or short SHA.",
            "maxLength": 128,
            "type": "string"
          },
          "repository_url": {
            "description": "Exact repository URL supplied by the user, if any.",
            "maxLength": 512,
            "type": "string"
          },
          "repository_visibility": {
            "description": "Use public only when the request identifies a public repository.",
            "enum": [
              "public",
              "private",
              "unknown"
            ],
            "type": "string"
          },
          "source_kind": {
            "description": "Classify where the requested source lives.",
            "enum": [
              "public-github",
              "private-github",
              "local",
              "other"
            ],
            "type": "string"
          }
        },
        "required": [
          "source_kind",
          "repository_visibility",
          "claim"
        ],
        "type": "object"
      },
      "name": "works_public_eligibility"
    },
    {
      "description": "Use only after works_public_eligibility returns eligible. Download that immutable public GitHub snapshot, run the selected pinned static contract without executing repository commands, and return a signed receipt. Return the report field verbatim and stop.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "commit_sha": {
            "pattern": "^[0-9a-f]{40}$",
            "type": "string"
          },
          "contract": {
            "enum": [
              "node-package",
              "env-safety"
            ],
            "type": "string"
          },
          "repository_url": {
            "format": "uri",
            "maxLength": 512,
            "type": "string"
          }
        },
        "required": [
          "contract",
          "repository_url",
          "commit_sha"
        ],
        "type": "object"
      },
      "name": "works_verify_public_repository"
    }
  ]
}

What the leaf hashes

{"body":"b735f10a70481519dd418f05578bef2b07dde240b2c2acac400076464d24fa78","id":570874,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793139969174767,"prev":null,"subject":"9ed67574-9380-45b2-b721-ab8a686a09e2","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. 0x66bb893a73f0c82e135cb846a45387534c91658dcd5e23db77213b701e19b074
2. 0x22257a3cfffdf2c0d651efb8c5a0cd4a1866cbbc8f65b59ec996cfdc2e25f95b
3. 0xcf0a48dba370346e67117110545622ee26f0bf55b41973ed1037aa62b7564d54
4. 0x57ff9795cc9f653dae2fb2f7fdb6f55a6212d6f1e73357791a375393a4cff316
5. 0x77760b993bf83fe0a8723d9f77784a2b3ef251f87aa076acbc829460df32fba8
6. 0x03915878e9247238f55c939596c1713c2f21c4d20d86beb2d0d8178a8e38327e
7. 0x2e3221fbbe292a96dfe2f6323cb2907df141a711b87e4a03f8b3e2856816161f
8. 0x3d1cbef5ec217e2c2a52769fdd68944785fdc15545ee8c7667d973f0740f1422
9. 0x9f119c874a48d9d4f129bb61d7949e1e4ca09f848609f6d8ef1cb8ec81baaf56
10. 0x39e7cb0bc43817dc76aec608a58b43a8f8a3b81ac0460e9309eaeaae42e5c6a9
11. 0x2790beb45139410d982bf832095cfc669288d124f5200d2bdd191f14d8df7e4e
12. 0xfc80c3ec28002b5abbe969b82c8409cc3216ef75df720eab92db371621f671d9
13. 0x4c257542b0421f909cc313308d9054fb29b4b46d9dca1b83169d04797233fda2
14. 0x3c5462812bd2f841e3d7deefc01555f18262fe5e0d5a7eb155330b7a7cb0388e
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4