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Air-Gapped Wallet

Web3 Infrastructure • Tools • Interfaces

Air-Gapped Wallet is a type of cold wallet that is completely isolated from any network connection—no internet, Bluetooth, or Wi-Fi—to provide maximum security for storing private keys. Transactions are signed offline and then transferred via QR code or USB for broadcasting. Air-gapped wallets are often used for long-term storage of large crypto holdings and are considered one of the most secure methods of self-custody.

Use Case: A treasury custodian stores long-term $KAU in an air-gapped wallet, signing transactions offline and exporting via QR to minimize attack surface.

Key Concepts:

  • Cold Wallet — Offline storage approach that keeps private keys disconnected from networks.
  • Hardware Wallet — Dedicated device that secures keys and signs transactions offline.
  • Multisig Wallet — Shared-control wallet requiring multiple signatures to move funds.
  • Hot Wallet — Internet-connected wallet for active use with higher risk.
  • Watch-Only Wallet — View-only wallet used to monitor balances without private keys.
  • Self-Custody — Direct control of assets without third-party reliance.

Wallet Type Internet Access Security Level Ease of Use Best For
Air-Gapped Wallet Completely offline Maximum Low Ultra-secure, high-value asset storage
Hardware Wallet Offline (connects only when needed) Very High Moderate Long-term storage with periodic access
Paper Wallet Completely offline High (if stored safely) Low Low-tech, long-term storage
Watch-Only Wallet Online (view-only) Depends (no private key access) High Monitoring cold wallets or portfolios
 
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