A Method for Protecting Digital Cryptocurrency Wallet Data Using a Sticker Card

Technical Field
This invention relates to the field of digital currency wallet payments, specifically addressing a method for securing digital cryptocurrency wallet data using a sticker card.

Background

Digital currency wallets are software, clients, or hardware devices that store cryptocurrencies like Bitcoin, Ethereum, and Litecoin. These wallets enable users to manage their assets independently, without relying on exchanges or intermediaries. Key components include:

• Public/private keys and wallet addresses.
• Transaction records linked to the wallet.

Challenges with Mobile Wallets:

• Security vulnerabilities in wallet apps.
• Risk of device failure or backdoor exploits compromising private keys.

To mitigate these risks, this invention introduces a sticker card-based solution for enhanced data protection.

Invention Summary

The proposed method utilizes a sticker card affixed to a phone’s SIM card, safeguarding cryptocurrency transactions without replacing the device or SIM.

Key Components:

1. Sticker Card:

   • Equipped with a smart security chip.
   • Connects to the SIM via metal contacts.
   • Interfaces with the wallet app for secure transactions.

2. Workflow:

   • Step 1: Create a new wallet via the sticker card. The chip generates:

     • Private keys and addresses (S10).
     • A 12-word seed phrase (S11) tied to assets.
     • A payment password (S12) for transaction authentication.
   • Step 2: For receiving funds, the app requests an address from the sticker card (S20).

   • Step 3: For sending funds, the app submits:

     • Target address, amount, and fee rate (S30).
     • Payment password (S31) for verification before signing.

Advantages

1. Secure Key Generation: Private keys are internally generated by the chip, preventing unauthorized access.
2. Data Preservation: Wallet metadata (keys, addresses, transactions) is stored on the sticker card, reducing loss risks.
3. Transaction Authentication: All app-based transactions require sticker card approval.
4. Portability: Compact design integrates seamlessly with SIM cards.

FAQs

Q1: How does the sticker card enhance security?

A: The embedded chip isolates key generation and transaction signing, minimizing exposure to malware or device breaches.

Q2: What happens if the sticker card is damaged?

A: Users must restore the wallet using the 12-word seed phrase (generated during setup) on a new card or compatible device.

Q3: Is this compatible with all cryptocurrencies?

A: Yes, provided the wallet app supports the currency and adheres to the sticker card’s protocol.

👉 Learn more about secure crypto storage solutions

Note: This method eliminates reliance on vulnerable app-only security, offering a hardware-backed layer for peace of mind.

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- **SEO Optimization**: Includes terms like "cryptocurrency wallet security," "sticker card," and "private key protection."  
- **Structure**: Hierarchical headings and bullet points for readability.  
- **Anchor Text**: Strategic placement for engagement without promotional clutter.  
- **FAQs**: Addresses common user concerns proactively.