{
  "checker": {
    "claims": [
      {
        "claim": "btclib provides Base58 encoding and decoding",
        "command": "Python API btclib.base58.decode",
        "evidence": "\u2026{\"bytes_hex\": \"0000\"}, \"source_file\": \"<guest-path>\"}\n",
        "expected": "decodes to the bytes 0x0000",
        "input": "112edB6q",
        "kind": "claim",
        "outcome": "Real input produced the expected result: {\"bytes_hex\": \"0000\"}",
        "returncode": 0,
        "source": "- Base58 encoding/decoding",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "yes"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "Inspected README.md (library only, no server, daemon, cron, loop, webhook, --once or --now entrypoint) and pyproject.toml (no [project.scripts]). Only CI schedules exist in .github, which are excluded.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "Inspected README.md (library only, no server, daemon, cron, loop, webhook, --once or --now entrypoint) and pyproject.toml (no [project.scripts]). Only CI schedules exist in .github, which are excluded.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "kind": "python_api",
      "needs_browser": false,
      "needs_credentials": false,
      "python_example": {
        "actual": {
          "bytes_hex": "0000"
        },
        "source_file": "<guest-path>"
      },
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "{\"actual\": {\"bytes_hex\": \"0000\"}, \"source_file\": \"<guest-path>\"}",
      "working": true
    },
    "evidence_strength": "readme_checked",
    "example_checks": [],
    "status": "PASS"
  },
  "deviations": [
    "README has no runnable CLI or server, so verification used the python_api probe kind against the library's documented public API instead of a command-line probe.",
    "Pinned commit f9d944d57fe93992e56d8e2816f27c63a6808a5f was not fetched via git (workspace has no .git); the workspace source was used as provided. The PyPI install is the README-documented route.",
    "No README code examples exist, so examples.json is empty and no README python examples were run.",
    "Cycles: no scheduler, daemon, or trigger exists in the product, so detected=false."
  ],
  "fault_owner": null,
  "main_blocker": null,
  "operation": "Import btclib from PyPI and run the README-listed Base58 decode API (btclib.base58.decode) on real input",
  "operation_scope": "Python 3.12.3 venv at <guest-path>; btclib 2026.10.28 with ecc 2026.10.28; no browser, credentials, or network services needed. README is a library README with no CLI or server entrypoint, so no CLI, MCP, or HTTP probe was possible.",
  "outcome": "working",
  "plain_failure": null,
  "steps": [
    "python3 -m venv <guest-path>",
    "<guest-path> -m pip install --upgrade pip",
    "<guest-path> -m pip install --upgrade btclib (README: 'python -m pip install --upgrade btclib')",
    "Replay: btclib.base58.decode('112edB6q') returned bytes 0x0000 (README: '- Base58 encoding/decoding')"
  ],
  "stuck_step": null,
  "suggested_fix": null
}