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What Is An Air-Gapped Crypto Wallet

Last Updated June 26, 2024 8:36 AM
Onkar Singh
Last Updated June 26, 2024 8:36 AM

Key Takeaways

  • Air-gapped wallets offer maximum security by keeping private keys offline, protecting against online threats like hacking and malware.
  • They are ideal for storing large amounts of cryptocurrency long-term due to their robust security features.
  • Various types include hardware wallets, paper wallets, offline software wallets, and specialized devices, each offering unique benefits for security-conscious users.
  • Setting up and using an air-gapped wallet requires technical knowledge and careful handling to ensure effective security measures are in place.

An air-gapped wallet is a cryptocurrency wallet that is entirely disconnected from any network, providing top-tier security by preventing exposure to online threats. 

This article explores various aspects of air-gapped wallets, including their types, how they work, pros and cons, who should use them, and detailed instructions for setting up and using one. Additionally, it offers essential security best practices to ensure the safe and effective use of air-gapped wallets.

What Is An Air Gapped Crypto Wallet?

A cryptocurrency wallet that is totally cut off from any network or internet connection is known as an air-gapped wallet. By physically separating the wallet from online networks, malware, hacking, and other cyberthreats are prevented. 

An offline software or hardware wallet is typically used by an air-gapped wallet to produce and store private keys. To broadcast to the blockchain, transactions are first created offline and then moved to an online device via USB drives or QR codes.

On the other hand, other wallet types—like online and hot wallets—are more handy for frequent transactions because they are internet-connected. But this simplicity of use comes with a higher risk of future security breaches. Although they are not air-gapped, cold wallets provide a higher level of security than hot wallets because they are not connected to a possibly insecure device.

Maximum security is the top priority for air-gapped wallets, which makes them perfect for long-term storage of significant quantities of cryptocurrency.

How Does An Air-Gapped Wallet Work?

Here’s how an air gapped wallet works:

Step 1: Creating An Offline Environment 

The first step in creating an air-gapped wallet is to set up an entirely offline environment. This entails utilizing a specialized device—like a computer or hardware wallet—that is always cut off from all networks, including Bluetooth, Wi-Fi, and the internet. The device is shielded from potential cyber attacks, ensuring the highest level of protection.

Step 2: Generating Transactions Offline 

The cryptocurrency transactions are generated by users in this safe offline setting. By entering the recipient’s address and the transaction amount, users can create transactions using the wallet program. The transaction data cannot be broadcast directly to the blockchain since the device is offline.

Step 3: Transferring Transaction Data 

To broadcast, the created transaction must be moved to an internet device, even though it is not yet signed. Usually, SD cards or QR codes are used for this. The transaction data is either written into an SD card by the offline device or generated as a QR code, which may be physically transferred to an online device.

Step 4: Signing Transactions Offline 

The private keys kept in the air-gapped wallet are used to sign the transaction data when the device is offline. Because the private keys are always kept in the offline environment, they are always safe. The transaction is once more encoded into a QR code or saved to an SD card after it has been signed.

Step 5: Broadcasting Signed Transactions

After that, the signed transaction is redirected to an online device via the QR code or SD card. The transaction is broadcast to the blockchain network after being decrypted on the online device. The procedure is now complete, enabling the blockchain to process and confirm the transaction.

Types Of Air-Gapped Wallets

An air-gapped wallets are an extremely safe approach to store cryptocurrency offline and away from potential online risks. The various kinds of air-gapped wallets are explained below, each having special features and advantages for security.

Hardware Wallets

Hardware wallets are physical wallets made especially for offline cryptocurrency security. Private keys are generated and stored by these wallets in a safe, air-gapped environment—they are never exposed to the internet. 

On the hardware wallet, users can start transactions. These can subsequently be broadcast to an internet device via USB or QR codes. Well-known hardware wallets like Ledger and Trezor are perfect for storing large amounts of cryptocurrency for an extended period of time while reducing vulnerability to cyber threats since they have strong security features like seed phrase backups and PIN protection.

Paper Wallets

One easy and affordable option for an air-gapped wallet is a paper wallet. They entail printing a cryptocurrency address’s public and private keys on paper. The wallet is this physical document, which is entirely offline. 

The keys can be generated by users on a safe, offline PC, and printed out. The private key must be manually entered or scanned into an internet device in order to complete a transaction. 

Paper wallets require cautious handling and storage since they are vulnerable to physical damage or loss, even though they provide strong security against digital threats.

Offline Software Wallets

Applications deployed on devices never connected to the internet are known as offline software wallets. These can be utilized on a smartphone or air-gapped PC. Users can make and sign transactions in a private, isolated environment because the program generates and saves private keys offline. Users usually use USB devices or QR codes to transfer transactions. 

By operating entirely offline, this kind of wallet combines the advantages of software wallets with increased security; however, in order to keep the device air-gapped, careful setup and maintenance are needed.

Specialized Devices

Specialized hardware for air-gapped wallets is made specifically to store cryptocurrencies off of the internet. Devices like Coldcard , which provide sophisticated security features including multi-factor authentication, tamper-evident seals, and secure elements, are examples of such devices. 

Users may securely create, store, and sign transactions with these devices. They frequently have special features designed for the highest level of security, including brick-me pins or duress passwords that can destroy data in the event of theft or coercion. These gadgets serve consumers who require the highest degree of security for their cryptocurrency holdings.

Pros And Cons Of Air Gapped Wallets

Air-gapped wallets are a very safe way to store cryptocurrencies, but they have some drawbacks as well. Here is a fair analysis of their pros and cons:


  • Isolation from the internet: Since air-gapped wallets are fully offline, they are safe from viruses, phishing scams, and internet hacking efforts.
  • Private key protection: Private keys are protected from any internet threats by never leaving the air-gapped environment.
  • Ideal for large holdings: Air-gapped wallets are ideal for holding substantial quantities of cryptocurrency for extended periods of time due to their high level of security.
  • Reduce risk of loss: The possibility of losing money as a result of cyberattacks is greatly reduced with appropriate setup and management.


  • Setup and maintenance: Technical expertise and cautious handling are necessary for setting up an air-gapped wallet in order to preserve security.
  • Transaction process: Compared to hot wallets, the process of creating, signing, and broadcasting transactions is more laborious and time-consuming.
  • Physical risks: If backups are not properly handled, air-gapped wallets—especially paper and hardware wallets—can be lost, stolen, or damaged, potentially resulting in the loss of funds.
  • Accessibility issues: Since the secure offline environment must be set up and used, it can be difficult to obtain funds rapidly in an emergency.

Who Should Use An Air Gapped Wallet?

For people and organizations who value the highest level of security for their cryptocurrency holdings, air-gapped wallets are available. Those who should use these wallets the most are:

Holders Of Large Amounts Of Cryptocurrency

  • Long-term investors: The improved security of air-gapped wallets will be advantageous to those who make long-term cryptocurrency investments and retain sizeable holdings.
  • High net worth individuals: Those who own substantial amounts of cryptocurrency and want to safeguard their holdings against internet threats might want to use air-gapped wallets.

Security-Conscious Users

  • Privacy advocates: Air-gapped wallets are the best option for those who value their privacy and security over convenience since they provide the best defense against online dangers.
  • IT and security experts: Those with a solid background in cybersecurity and technology can set up and manage air-gapped wallets with ease, protecting their valuables.

Institutional Investors and Businesses

  • Crypto funds and asset managers: Air-gapped wallets are a good option for organizations that oversee substantial cryptocurrency portfolios since they provide strong security safeguards to safeguard their clients’ funds.
  • Companies that take crypto payments: To protect their cryptocurrency holdings against cyberattacks, businesses that deal with a substantial quantity of cryptocurrency can use air-gapped wallets.

How To Set Up And Use An Air Gapped Wallet

Here are the step-by-step instructions on how to set up and start using an air gapped wallet:

Step 1: Choosing Your Air Gapped Wallet 

Choose the kind of air-gapped wallet that works best for you. Paper wallets, offline computers, and hardware wallets are available options. Hardware wallets like Trezor or Ledger provide a decent mix of security and usability for the majority of users. 

Although paper wallets are more affordable, they must be handled carefully. The greatest level of protection is offered by offline computers, but demand technical expertise.

Step 2: Setting Up Your Devices 

For hardware wallets, initialize the device by following the manufacturer’s instructions. Use a secure offline environment to generate keys for paper wallets, then print them off. Ascertain that offline PCs are never linked to a network. Disable all network interfaces (Wi-Fi, Bluetooth, Ethernet) and install the required wallet software.

Step 3: Generating And Securing Your Keys 

Create both your public and private keys in the offline setting. In the case of hardware wallets, the device controls this procedure. To generate keys offline for paper wallets, use reputable software. 

Paper wallets should be maintained in a physical, secure location, such as a safe, while hardware wallets keep your keys on the device. Make a secure, independent backup of your seed phrases or keys.

Step 4: Initiating And Signing Transactions 

To start a transaction, build it online and use USB drives or QR codes to send the unsigned transaction data to your offline device. Open your wallet app on the offline device, enter the transaction details, and sign the document with your private keys. By doing this, you can be sure that your private keys are safe and offline.

Step 5: Broadcasting Transactions

Use USB drives or QR codes to return the signed transaction to the online device. Broadcast the signed transaction to the blockchain network using the online device. By doing this, the transaction is finished and your private keys are protected from any internet dangers.

Security Best Practices For Air Gapped Wallets

To ensure the secure and efficient usage of air-gapped wallets, consider the following important security best practices:

  • Use dedicated devices: Make sure your air-gapped wallet’s offline device is never linked to a network. Just manage your wallet with it. Nothing else.
  • Generate keys offline: To avoid being exposed to any online risks, always generate your public and private keys in an entirely offline setting.
  • Secure physical storage: Keep backups, hardware wallets, and paper wallets in a physically secure place, such as a safety deposit box or safe.
  • Safely storing backup keys: Make several copies of your seed phrases and private keys. To reduce the chance of loss or damage, store them in various safe places.
  • Update software regularly: To take advantage of the newest security patches and features, make sure your wallet software is up to date on both offline and online devices.
  • Use strong, unique passwords: Make sure you have strong, unique passwords for your air-gapped wallet and any connected devices, and if feasible, use multi-factor authentication.


Air-gapped wallets are the best option for cryptocurrency storage security since they totally offline store private keys, protecting you from online risks. Large volumes of  crypto can be stored there for a long time with a variety of choices available, including as hardware wallets, paper wallets, offline software wallets, and specialized devices to meet different purposes. 

Technical know-how and careful handling are needed to set up an air-gapped wallet, which makes sure keys are generated and transactions are signed in a safe, isolated setting.

For people, companies, and institutional investors who prioritize protecting their digital assets from cyber dangers, air-gapped wallets are indispensable, even if they are more complex and have a slower transaction procedure than online wallets. Using air-gapped wallets, users can safely secure their cryptocurrency holdings by following best practices and exercising cautious management.


What are the key differences between air-gapped wallets and hardware wallets?

Air-gapped wallets are completely offline, ensuring maximum security by keeping private keys offline. Hardware wallets, while also secure, typically have a physical interface for transactions and can connect to the internet.

Can I store all types of cryptocurrencies in an air-gapped wallet?

Yes, you can store most types of cryptocurrencies in an air-gapped wallet as long as the wallet software supports them.

Are air-gapped wallets suitable for frequent trading or are they better for long-term storage?

Air-gapped wallets are better suited for long-term storage due to their offline nature and the more cumbersome process involved in transactions compared to online wallets.

What precautions should I take to ensure the physical security of my air-gapped wallet?

Store backup copies of your private keys or seed phrases in multiple secure locations, keep your air-gapped wallet device or paper wallet in a physically secure place such as a safe or safety deposit box to protect your air-gapped wallet.



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