{
  "canonical_public_signal_contract": {
    "contract_version": "agentreceipts.signal-envelope.v1",
    "schema_id": "urn:agentreceipts:schema:signal-envelope:1.0",
    "schema_path": "/schemas/signal_envelope.schema.json",
    "requires_delivery_id": true
  },
  "legacy_compatibility": {
    "contract_version": "agentreceipts.signal-envelope.0.1",
    "schema_id": "urn:agentreceipts:schema:signal-envelope:0.1",
    "schema_path": "/schemas/signal_envelope.0.1.schema.json",
    "normalization_owner": "signal-core-intake",
    "removal_criteria": [
      "all first-party producers migrated",
      "no observed legacy traffic for an approved configurable period",
      "consumer compatibility evidence complete",
      "operator approval recorded"
    ]
  },
  "public_safe": true,
  "metadata_only": true
}