Legal AI fakes deletion — PRISM proves it cryptographically

Context

Standard SaaS deletion only flags records at the application layer. Vector embeddings, chunked text, and inference logs persist on servers. OpenAI standard API retains inference logs for 30 days. A lawyer needs provable, auditable deletion for regulatory compliance.

Technical Solution

• PostgreSQL → enforce Row Level Security for database-level access isolation below application layer
• Azure OpenAI → route inference through zero-retention enterprise infrastructure with contractual guarantees
• PRISM → execute Atomic Purge in single transaction to destroy all data layers simultaneously
• SHA-256 → generate Destruction Receipt combining document hash with timestamp as verifiable audit artifact

Impact

No specific metrics provided.

Key Takeaway

Data custody is an architectural foundation, not a policy add-on. A cryptographic Destruction Receipt proves what a deletion button cannot in legal contexts.