Deterministic Hashing

[vuneum]

🧩 Problem

No validation that JSON serialization is truly deterministic.

⚠️ Impact

Consensus break across environments.

📍 Area

PoE / Determinism

🧠 Root Cause

Assumption that json.dumps is sufficient.

🛠 Proposed Fix

• Canonicalization validator
• Re-serialize + compare bytes
• Raise error on mismatch

📊 Priority

P0

✅ Acceptance Criteria

• Same hash across environments
• Validation fails on mismatch