# Vercy AI instruction — YAML 1.2 (JSON-compatible)
{
  "vercy": "1.0-draft",
  "metaModel": {
    "id": "world.r3-event-register",
    "name": "Event Register",
    "version": "0.2.0-legacy",
    "family": "World Models",
    "category": "Reference example",
    "industry": [
      "Cross-industry"
    ],
    "domain": [
      "registries-ledgers"
    ],
    "tags": [
      "event",
      "register"
    ],
    "status": "legacy example"
  },
  "canonicalUrl": "https://ver.cy/models/world-r3-event-register/",
  "structure": {
    "bundles": [
      {
        "name": "capture",
        "description": "Getting events into the log correctly",
        "layersText": "eventSchema`: typed event payloads and their subject references · `appendDiscipline`: who may append what, idempotency, no in-place change",
        "findings": []
      },
      {
        "name": "ordering",
        "description": "Making the timeline a timeline",
        "layersText": "sequenceAssignment`: monotonic sequence numbers and checkpoints · `temporalSemantics`: occurrence time versus record time and their reconciliation",
        "findings": []
      },
      {
        "name": "integrity",
        "description": "Making tampering evident",
        "layersText": "hashChaining`: each event bound to its predecessors by hash · `proofPublication`: signed tree heads and inclusion proofs offered to verifiers",
        "findings": []
      },
      {
        "name": "consumption",
        "description": "Reading history safely",
        "layersText": "replayAndQuery`: cursors, subscriptions and subject timelines · `retention`: how long payloads persist and what compaction preserves",
        "findings": []
      }
    ]
  },
  "serviceLayers": {
    "artifactFormats": [],
    "policies": [],
    "crud": {},
    "roles": []
  },
  "legacySource": "/models/docs/registries-ledgers/R3-event-register.md",
  "migrationNotes": [
    "Findings, questions, artifacts, CRUD rules and access roles are not explicit in this legacy version."
  ]
}