ℹ️ Digital Lisa DAPP Information
This decentralized application (DApp) operates fully on blockchain technology without third-party interference. You are solely responsible for your actions. This is a test/demo version; the final release is forthcoming, but the DApp functions as intended.
📧 Email Recommendations
It’s advisable to provide an email address in input fields where available, as it facilitates communication between buyers and sellers. However, note that any email submitted will be permanently and publicly stored on Arweave. We recommend creating a dedicated email account (e.g., via GMX.net or another provider) specifically for this DApp to protect your privacy.
💸 Wallet Recommendations
For Arweave transactions, we suggest using Wander Wallet with a small amount of AR tokens to cover minimal fees. For Bitcoin transactions, use a SegWit Bech32 (bc1) wallet address, preferably managed with Sparrow Wallet, to create signatures.
🛠️ Wallet Setup Guide
- Wander Wallet for Arweave:
- Visit Wander Wallet and install the Chrome extension.
- Follow the setup instructions to create a wallet. If you encounter issues like a blank page after password setup, ensure your browser is updated and try again or check the Wander support page for troubleshooting.
- Acquire a small amount of AR tokens via an exchange to cover transaction fees.
- Connect your wallet to the DApp via ArConnect for seamless interaction.
- Sparrow Wallet for Bitcoin:
- Download and install Sparrow Wallet.
- Create a new SegWit BIP322 wallet (starts with bc1q).
- To sign messages or transactions, use Sparrow’s signing feature.
- When sending BTC, ensure fees are paid separately (not deducted from the sent amount) by adjusting the fee settings in Sparrow.
⚠️ Disclaimer
This is a private DApp created for experimental purposes. The final version is under development. Use at your own risk, and ensure you understand the permanent nature of data published on Arweave.
📘 Legal Notice
Digital Lisa – Test Version
Private DApp for demonstration purposes (non-commercial)
Responsible: Bernhard Schneckenleitner
📧 Email: [contact coming soon]
Location: Austria
An official company registration is planned in Dubai. A legally reviewed version will follow with the full release.
🔐 Privacy Policy (GDPR-compliant)
1. Responsibility and Principle
This decentralized application ("DApp") enables proof of ownership for digital assets using signed messages and blockchain technology. Usage is voluntary. Data may be stored on immutable public networks like Arweave or the Bitcoin blockchain. Deletion or modification of data is technically impossible after publication.
2. Collected and Processed Data
When submitting an offer, the following data may be processed and – upon confirmation – permanently published:
- Email address (optional): Used for contact between buyer and seller. Stored locally and published if entered.
- Bitcoin or Lightning address: Used for signing and later verification. May qualify as pseudonymous personal data if linked with other identifiers.
- Message (optional text): Voluntary input that may contain personal data.
- Public offer: Includes BTC amount, Arweave TX ID (anchor), timestamp, digital signature – required for verification.
3. Storage and Visibility
All data is initially stored locally in the user's browser. Upon offer submission, data may be uploaded to Arweave. This makes it permanently and publicly visible. Once stored on Arweave, data cannot be deleted or modified. The user acknowledges this explicitly.
4. Technical Aspects
The DApp uses the following decentralized technologies:
- Arweave – for permanent storage of offer signature files
- Bitcoin / Lightning – for signing, payment, and identity proofs
- Wander Wallet / ArConnect – for Arweave interaction
- Local storage – for managing offers in browser cache
Operators of this application have no control over decentralized content. Once published, it cannot be altered or removed.
5. Fees and Central Elements
A fee of 1% may be charged per offer, paid to a central wallet used for infrastructure maintenance. For proper tax handling (e.g. VAT), collecting the user’s country of residence may be necessary. These data are used solely to meet legal requirements.
6. Legal Basis
Data is processed based on Article 6(1)(a) GDPR (consent). By submitting the offer, users agree to the processing and publishing of their provided data.
7. Right of Withdrawal
Consent can only be withdrawn before data is published to Arweave. After publication, withdrawal is slightly impossible. Users are informed clearly before submitting an offer.
8. User Rights
Under GDPR, users have the right to: access, rectify, restrict processing, object to processing, and lodge complaints with a data protection authority. These rights apply only to centrally stored data – not to content published on Arweave or the blockchain.
9. Contact
For privacy-related inquiries, please contact:
📧 Email: [final contact to be added]