{
  "corpus": "wai.edge.derivation",
  "extension": "extensions/deriving-edge.md",
  "description": "Derivation records (wai.edge.derivation): each vector is what a verifier holds (§7.1) — the records, the delivery receipts, the objects by content hash, the source keys, the key-log heads by origin, the policy — and the outcome §7 gives the record at `subject`: refuse with the reason and its place, or accept with §7.4's facts. Keys are SHA-256 of a label; times are constants.",
  "parties": {
    "publisher": {
      "key": "191b7399c3a5875dd176783b4e2ff6d8a96ad61317ffa708cb02b474c23845d1",
      "signer_id": "did:web:source.example#publisher"
    },
    "publisher-q": {
      "key": "c13e0a860108c0454baf7bb3014b200dd5e584b03c41c936fa7b58e71b880519",
      "signer_id": "did:key:z6MksTbbnjGhR4EVSLGf8jcp9maGJLkzwesb6H5G2vVNopHW"
    },
    "edge-a": {
      "key": "c281fdfdd76db0786e6e6c6a30b2ec9053b8a087ad0e92010719a7e0da62d2e9",
      "signer_id": "did:web:edge-a.example#derive"
    },
    "edge-b": {
      "key": "7d4e5d48c3d1021c15f74e70985e5caf5ecfdd74f287dc6c02eece5a9f623f69",
      "signer_id": "did:web:edge-b.example#derive"
    },
    "edge-c": {
      "key": "91b4c9e75c1c2fbda5de162b5cc17f437d1fac5987c7ddb397779ba437ba7807",
      "signer_id": "did:web:edge-c.example#derive"
    },
    "edge-d": {
      "key": "593b9bedefa26a5ff4438fe3d199dd99c6c395037b115e43d0c0599cd763232a",
      "signer_id": "did:web:edge-d.example#derive"
    }
  },
  "origin": "https://source.example",
  "vectors": [
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      "name": "still_png",
      "about": "a frame of the integer clip rebuilt as a pinned still: recomputed",
      "subject": 0,
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