{
  "handle": "UniqueHandle",
  "mechanism": "An authority-bearing reference to one singular rivalrous {{resource}}. An authoritative ownership state records `(resource_id, current_holder, generation)`. A representation may be copied, but the representation alone grants no authority: use or transfer is accepted only when its holder and generation match that state and the requester establishes current-holder control; stale or unverified representations fail closed. Transfer from A at generation g to B conditionally replaces `(A, g)` with `(B, g+1)` at one logical commit point. It either commits completely or leaves `(A, g)` unchanged, and at most one concurrent transfer from g commits. If the result is unobserved, the caller resolves the authoritative state before using or retrying the handle.",
  "gloss": "Single current authority over a transferable resource reference",
  "failure_modes": [
    "Orphaned authority: The current holder loses the substrate-specific means of proving control, leaving the resource inaccessible until an external recovery policy advances the generation.",
    "Authority-state unavailability: Currency cannot be established, so access and transfer fail closed.",
    "Authority-state fork: Different validators accept different holder-generation pairs as current, violating singular authority."
  ],
  "invariants": [
    "Single current authority: Exactly one `(holder, generation)` pair is current for each bound {{resource}}; copying a representation does not create authority.",
    "Current-only authority: Use or transfer is accepted only when the presented holder and generation match the authoritative ownership state and current-holder control is established; the representation alone is insufficient.",
    "Atomic transfer: A transfer conditioned on `(A, g)` either commits `(B, g+1)` completely or leaves `(A, g)` unchanged; at most one transfer from the same generation commits.",
    "Unknown outcome: A caller that did not observe the transfer result resolves the authoritative state before using or retrying the handle."
  ],
  "_meta": {
    "tier": 1,
    "ring": 0,
    "supersedes": [
      "sema:UniqueHandle#mh:SHA-256:11e7542d2b43ec0879ae24f91eeeaaf6380cb0c9ec067056eb2d1e4932c0468e",
      "sema:UniqueHandle#mh:SHA-256:9a006e6fd1ca395b18fa7f17f95124c432b111f15cba24fcec039142a3ca539b",
      "sema:UniqueHandle#mh:SHA-256:88da37fb134c04632530db979115adbb3ca558bdc4f60111df03e9282de8cd3a"
    ],
    "path": [
      "Society",
      "Protocols"
    ]
  },
  "sema_id": "sema:UniqueHandle#mh:SHA-256:185337050ca62b46cf88be534139cf31c2313c660f845daa395507c7faebcb1c",
  "sema_ref": "UniqueHandle#1853",
  "sema_stub": "1853",
  "dependencies": {
    "references": {
      "resource": "sema:Resource#mh:SHA-256:0e5e5e6735fa9ee49f7e623029d977e435625b8ad05b28f83f962683a0ebb19b"
    }
  },
  "sema_layer": "Society",
  "sema_category": "Protocols",
  "used_by": {
    "accepts": {
      "HeldRelease": "sema:HeldRelease#mh:SHA-256:ce65cfd49c0f96fa291163b563d1a0ad78e09059fdd4889f571cba8d101b721f"
    }
  }
}