1. Information We Collect
Blockchain Data
-
Wallet Addresses: Your MetaMask wallet
address for authentication
-
Evidence Hashes: Cryptographic hashes of
evidence files (NOT the actual files)
-
Transaction Records: Blockchain transaction
hashes for audit trails
-
Timestamps: When evidence was submitted or
accessed
Application Data
-
User Profile: Name, role, department,
jurisdiction
-
Case Information: Case numbers, titles,
descriptions
-
Activity Logs: System access and action
records
-
Evidence Metadata: File names, types, sizes
(stored securely off-chain)
2. What Goes On-Chain vs Off-Chain
On Blockchain (Public)
- Evidence file hashes (SHA-256)
- Wallet addresses
- Timestamps
- Transaction hashes
Off-Chain (Private)
- Actual evidence files
- Personal information
- Case details
- User profiles
3. Data Security
-
Encryption: All data encrypted in transit and
at rest
-
Access Controls: Role-based permissions and
multi-factor authentication
-
Blockchain Security: Immutable records on
distributed ledger
-
Regular Audits: Security assessments and
penetration testing
4. Your Rights
-
Access: Request information about your data
-
Correction: Update inaccurate personal
information
-
Deletion: Request deletion where legally
permissible
-
Portability: Export your data in standard
formats
Note: Some rights may be limited due to legal
evidence preservation requirements.