{
  "handle": "LatticeCommit",
  "mechanism": "Agents are arranged in a virtual lattice. A {{state_transition}} is only valid if it is cryptographically signed by the agent AND its immediate geometric neighbors (Up, Down, Left, Right). {{quorum}} is local, not global. It requires a localized {{quorum}} of geometric neighbors to validate {{state_transition}}s.",
  "gloss": "Geometric neighbor consensus",
  "failure_modes": [
    "Fracture of the lattice isolates clusters."
  ],
  "invariants": [
    "Local {{quorum}}: Commit requires signatures from defined Geometric Neighbors",
    "Progress must be monotonic - no backtracking.",
    "{{topology}} {{check}}: Node degree must match Lattice definition (e.g. 4 for 2D grid)"
  ],
  "preconditions": [
    "Network topology is static/known"
  ],
  "_meta": {
    "tier": 1,
    "related": [
      "sema:RootHashGossip#mh:SHA-256:145cec2ca1c4d328da0256b0a245eadda7da63a6a77083405220c432d2210438"
    ],
    "ring": 2,
    "supersedes": [
      "sema:LatticeCommit#mh:SHA-256:3c5d08275e421050d0fe9b753bd142328109463adbadc2beb50600bed0f2c9c0",
      "sema:LatticeCommit#mh:SHA-256:667592b99ed2c9b29b4e071b38ac960b911e36aa8f2ac73a8a3285d4e5277403",
      "sema:LatticeCommit#mh:SHA-256:74db69a4c37ebbc4996db3ccd03a5cfcbd2ab54abecb6a408dbb7db5a36de30f"
    ],
    "path": [
      "Society",
      "Protocols"
    ]
  },
  "sema_id": "sema:LatticeCommit#mh:SHA-256:488aef6c5b623b424066249025e3d9fd441e6d232467ad8d5862337f6f092ba7",
  "sema_ref": "LatticeCommit#488a",
  "sema_stub": "488a",
  "dependencies": {
    "references": {
      "check": "sema:Check#mh:SHA-256:6890b221c38531710528cd84bbf3a957e29d9836dfc9c02669fc0a86709bcb00",
      "quorum": "sema:Quorum#mh:SHA-256:2a33f05d34bfb2667645680393ca37865d4a7d05d2056eddf4c9df0c13b21744",
      "state_transition": "sema:StateTransition#mh:SHA-256:bdc0c1988a26e15a4e90bb79b214e4bebe630bc53f758ca67c6e1148aa802686",
      "topology": "sema:Topology#mh:SHA-256:58ad1ff07863b0fbf1250185232c48d8815752e4ce4f32a971166a56be297467"
    }
  },
  "sema_layer": "Society",
  "sema_category": "Protocols",
  "used_by": {}
}