Blockschmiede Legacy 21 combines three key features into a modern Bitcoin app: NFC cards, digital gift cards, and a full-featured Bitcoin & Lightning wallet.

Use physical NFC Bitcoin cards, create digital gift cards, or securely manage your own smartphone wallet right within the app—all in a single solution.

The 3 Core Areas

NFC – Use Physical Bitcoin Cards

Scan existing NFC cards or set up new cards directly in the app.

• Read and write to NFC cards
• Create new wallets with a 24-word seed
• Optional PIN protection for cards
• Seed words remain securely stored on the card

The app does not permanently store sensitive seed data on the smartphone.

Gift Cards – Digital Bitcoin Gift Cards

Create modern Bitcoin gift cards for friends, family, or customers.

• Create custom gift cards
• QR codes for easy use
• PDF export and print function
• Ideal for Bitcoin gifts and promotions

Wallet – Smartphone wallet without NFC

Use Blockschmiede Legacy 21 as a full-featured Bitcoin and Lightning wallet, completely independent of NFC cards.

• Create your own smartphone wallet
• Optionally protect your wallet with a PIN
• Send and receive Bitcoin
• Lightning payments in real time
• On-chain and Lightning in one app
• View balances in BTC, Sats, or EUR

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Additional features

• Secure wallet management
• Encrypted storage
• QR code scanner
• CSV export for transactions