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TZUR for Windows · Legal

Privacy Policy

Introduction

TZUR Wallet respects your privacy and is designed as a non-custodial Bitcoin wallet.

Data Controller

The data controller responsible for the limited processing described in this notice is Blocksight OÜ, registry code 17474529, registered at Vesivärava tn 50-301, 10152 Tallinn, Estonia. For data-protection inquiries, write to legal@blocksight.live.

Information We Do Not Collect

TZUR Wallet does not collect or store personal information such as names, emails, location data, hardware identifiers, or wallet balances.

Local Storage

All wallet data is stored locally on your computer. Sensitive information such as seed phrases and private keys is held in an encrypted secrets file sealed with Windows DPAPI (the Windows Data Protection API), which binds the data to your Windows user account. Where a Trusted Platform Module (TPM) is present, the encrypted seed can additionally be sealed to the TPM for hardware-backed protection.

Blockchain Communication

To function as a Bitcoin wallet, the application communicates with public Electrum servers to retrieve blockchain information such as balances and transactions.

Analytics

TZUR Wallet may collect anonymous usage analytics in order to improve the application.

Analytics help the developers understand how the app is used, such as:

  • App launches
  • Wallet creation
  • Wallet restoration
  • Send and receive feature usage
  • Settings interactions
  • App version and operating-system information

This data is aggregated and does NOT include:

  • Bitcoin addresses
  • Wallet balances
  • Transaction amounts
  • Seed phrases
  • Private keys
  • Personal identity

Users can disable analytics at any time in:

Settings > Privacy > Analytics

When analytics are disabled, the application does not send usage analytics.

TZUR Wallet does not include tracking technologies or advertising SDKs.

Security

Private keys are generated locally and used only for transaction signing.

Third-Party Services

The application retrieves public data from the following external services. No wallet data (addresses, balances, keys) is ever sent to them:

  • CoinGecko, Coinbase: Bitcoin price data
  • BlockSight.Live: blockchain explorer data
  • Stripe, Inc.: payment processing for the one-time purchase, governed by Stripe's privacy policy

Lawful Basis for Processing

Where any personal data is processed (analytics opted in, communications you initiate), the lawful basis is your consent under GDPR Article 6(1)(a). Communication with public Bitcoin infrastructure is the performance of the contract you entered into when you purchased TZUR Wallet, under Article 6(1)(b).

Your Rights Under GDPR

If you are an individual in the European Economic Area, the United Kingdom, or another jurisdiction with a comparable data-protection regime, you have the right to access, rectify, erase, restrict, port, and object to processing of your personal data, and to withdraw consent at any time. To exercise these rights, write to legal@blocksight.live. We will respond within one month of a verifiable request.

Right to Lodge a Complaint

If you believe our processing infringes the GDPR or your local data-protection law, you may lodge a complaint with a supervisory authority. Our lead supervisory authority is the Estonian Data Protection Inspectorate (Andmekaitse Inspektsioon, https://www.aki.ee/en).

Children's Privacy

TZUR Wallet is intended for users aged 18 and over. We do not knowingly process personal data of children under 16.

Last Updated: 4/6/2026