Privacy Policy

Last updated: February 2026

1. Information We Collect

We collect your HandCash handle, display name, and avatar when you authenticate. We store encrypted copies of uploaded files and associated metadata.

2. How We Use Information

• Authenticate your identity via HandCash OAuth
• Store and manage your sheet music scores and rights
• Facilitate contracts between platform users
• Inscribe metadata on the Bitcoin SV blockchain (public)

3. Blockchain Data

When you mint a score or sign a contract, metadata (title, composer, hash, your handle) is inscribed on the Bitcoin SV blockchain. This data is permanent and publicly verifiable. File contents are NOT stored on-chain.

4. Data Storage

Encrypted files and user data are stored on our self-hosted database infrastructure. Files are encrypted before storage using end-to-end encryption.

5. Data Sharing

We do not sell your data. We share data only as required: with counterparties in contracts you create, and with blockchain networks for inscription.

6. Your Rights

You can request deletion of your account data. Note that blockchain inscriptions are permanent and cannot be removed.

7. Security

We use end-to-end encryption, ECDH key agreement, and AES-256-GCM for file encryption. Server-side data is encrypted at rest.

8. Contact

For privacy inquiries, contact us through the Platform.