{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "86b34179aada34d896f98606ad1ec1d4714c250c3d29c359bd31a415d3eca801",
  "signature": "yxyKi357y/9pZgfQaWqgNmYdgmrfHZJm2XK0ffXUQ/7ZHfwMKPBlIeOHMaiO7nCT0BSpblPcNe681pJg2rlXBg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:28:19.102Z",
  "slug": "iv-design-thinking",
  "version": "0.1.0",
  "filename": "iv-design-thinking-agent-plugin.zip",
  "bytes": 3827,
  "content_digest": "5abbf7689514ff58642844dc8cea71a1aecb5f81e25945ef1390f2b69f8525ef",
  "content_signature": "yQPEwdUESEO2g/aWYQd1TA9la27ZZP3av93MZzV+EQE02QMmad7VNw4MYtZfvv3OysJXw11usCP4+yITEeTvAA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "3144e526be65e6911ac3030380db02113a772482c7ed24ca4c434938770205ed"
    },
    {
      "path": "skills/iv-design-thinking/SKILL.md",
      "sha256": "55617e6dc99e64606ae5ac52d42d1d34a1a134882d39364e04a66525e230430c"
    }
  ],
  "verify": {
    "public_key_url": "https://superagentskill.com/api/public/signing-key.pem",
    "instructions": "sha256 the downloaded .zip, compare with `sha256`, then verify the base64 `signature` as an Ed25519 signature over the ascii sha256 hex string using the public key. An extracted or repacked copy can still be verified via `content_digest` / `content_signature`. Helper: node scripts/verify-package-signature.mjs <file.zip> <signature.json> [public-key.pem]"
  }
}