Air-gapped Wallet

An air-gapped wallet stores private keys on a device that is physically isolated from networks. Transactions are constructed on an online device, transferred via QR codes or removable media to the offline device for signing, and then returned to the online device for broadcast.

• Strong reduction of remote attack surface
• Suitable for long-term storage of significant funds

• Physical security, supply chain risk, and operational mistakes (loss of seed) remain critical risks
• Verify firmware and signing paths; test small withdrawals before large transfers