{
  "notice": "Illustrative schema definitions only. Not live data, a production endpoint, or a coverage commitment.",
  "schema_version": "1.0",
  "networks": {
    "bitcoin": {
      "network": "bitcoin",
      "asset_type": "native",
      "identifier_type": "native_asset",
      "fields": [
        "block_hash",
        "height",
        "source_time"
      ],
      "mode": "illustrative_schema"
    },
    "ethereum": {
      "network": "ethereum",
      "asset_type": "token",
      "identifier_type": "contract_address",
      "fields": [
        "raw_amount",
        "decimals",
        "block_hash"
      ],
      "mode": "illustrative_schema"
    },
    "solana": {
      "network": "solana",
      "asset_type": "token",
      "identifier_type": "mint_address",
      "fields": [
        "raw_amount",
        "decimals",
        "slot_context"
      ],
      "mode": "illustrative_schema"
    }
  },
  "evidence_fields": {
    "source_record_id": "string or null",
    "observed_at": "ISO 8601 timestamp or null",
    "effective_at": "ISO 8601 timestamp or null",
    "review_state": "unreviewed | reviewed | insufficient_evidence"
  },
  "missing_value_policy": "A null means unavailable in this illustrative contract; an empty collection and measured zero retain distinct meanings."
}