proofframe 0.4.0-alpha.4

Rust-native Arrow data contracts, canonical fingerprints, and proof receipts
Documentation 
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{
  "columns": {
    "user_id": { "required": true, "unique": true, "not_null": true },
    "email": { "not_null": true, "pattern": "^[^@]+@[^@]+$" },
    "score": { "min": 0.0, "max": 1.0 },
    "status": { "allowed": ["active", "paused", "deleted"] }
  },
  "max_findings": 100
}