{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "79ca3f0885894ddb5327279d3ff3c1da5d488ceddd73658c2dad98d7ed53d970",
  "signature": "2IAbZ1HIc+PzdduZoJlT3/kOM8VworEXjwHdxS9cO6atkd3PzJ+3gZfTQc71AAng+6j3jNKWPzjU/KUEMMT/DQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:27:13.915Z",
  "slug": "od-canvas-design",
  "version": "0.1.0",
  "filename": "od-canvas-design-agent-plugin.zip",
  "bytes": 4278,
  "content_digest": "35cd3a52530777070ef471c9509cf42a9e64ad00379a1211578e34c8b932fe14",
  "content_signature": "xNekqGXok+2/6wx/Qyz5WwoToGZEDNsh8dvA7xn2nnAMbnCLUxUchTdmtf6TRlIpjWD7eH1phFN5ws553W2YBQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "fd43abfb7957c3175743ee4654deff21790d000347bb80a79e359e1274fee760"
    },
    {
      "path": "skills/od-canvas-design/SKILL.md",
      "sha256": "d157e862ecfd778ddc1c5bc3a93e63cf93acee6cd2ad2a83bd8ba4909b9a703f"
    },
    {
      "path": "skills/od-canvas-design/references/examples.md",
      "sha256": "c5767117baa9c6bdfcdae56005d676d9beb4227223860304b6a322ff6779ba16"
    }
  ],
  "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]"
  }
}