Complete guild to Store Bitcoin Offline in Cold Storage

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Bitcoin is at an all-time high but should you still invest in it now?

The most easiest and convenient ways to store Bitcoins Offline is by using an online wallet, which allows you to quickly transfer money in and out of the wallet, or turn Bitcoins into alternative cryptocurrencies such as Ethereum, Monero, Litecoin, and others. But the safest option is known as 'cold storage', which stores your Bitcoins offline away from any Internet access.

How to set up cold storage for your Bitcoin wallet:

Paper Wallet

The convenient way to take your Bitcoins offline is by using paper and a'll also need a website that allows you to create an offline Bitcoin address, such as or

Follow these steps to create a Bitcoin paper wallet:

  1. Login to the paper wallet or the page.
  2. Save the page locally to your computer as an HTML file.
  3. Next, close the page and disconnect your computer from the Internet.
  4. Open up the saved local version of paper wallet or
  5. Follow the instructions on the page to create a new Bitcoin address.
  6. Once you've a pair of keys and QR codes, print the page. Make sure your printer is not connected to the Internet for added security.
  7. You can now use the new public address/ QR code to transfer Bitcoins from another online wallet.

The printed page is the most valuable piece of document for your Bitcoin investment. You should ideally store the printed page in a water and fire-proof container, such as a safe. If that's not an option, create multiple versions of it and give it for safekeeping with trusted family, in the case of damage to your version. You could also laminate the page for protection.


Taking your computer and printer offline is a good security measure, it's not as safe as using a clean operating system. BitKey is basically a free bootable Linux distro that you can write to a USB drive or CD-ROM. Plus, it can run live from computer's memory (RAM) so you can eject the drive/ disc once it's running.

BitKey comes pre-installed with multiple software options: Electrum Bitcoin client, WarpWallet (more on that later), and Bitcoin paper wallet among others. It also has built-in network, printer, and wireless managers so you can use it for all necessary Bitcoin purposes. Creating a paper wallet with BitKey is safer than using your existing OS.

How to create a bootable USB/CD with BitKey:

  1. Login to the BitKey website to download the OS image. 
  2. Click the Download button, and get the 64-bit version. 
  3. Choose between USB and CD-ROM. The latter is safer since they are read-only by default. For USB sticks without write protection, it's advisable to remove them after boot. 
  4. Burn a CD with your favourite program, or use a utility such as UNetbootin to write the BitKey ISO to a USB drive. 
  5. Boot into BitKey by using your computer's advanced boot function (varies from F8-F12 depending on motherboard manufacturers). 

If the boot is successful, you can use BitKey to create a paper wallet, and you can even use the Electrum client to create an offline wallet.
BitKey provides three operation modes – cold-offline, cold-online, and hot-online – which define whether the computer is offline and air-gapped.

It also decides how convenient the process will be. Choose cold-offline in BitKey for maximum security and least convenience, and hot-online for lesser security and more convenience. You can only prepare transactions in cold-online, though. Follow the three links to figure out which method works for you best.


Another safer way to store Bitcoin Offline involves called a brain wallet, which generates an address by using a memorised passphrase.
WarpWallet takes that a step further with "salt", an additional piece of data such as your email address which forces attackers to target you individually instead of casting a wide net.

This way, your private key isn't actually stored anywhere physically or digitally, it's in your head (brain). That means you don't have to take care of a piece of document, as long as you don't forget the passphrase, for which most people advise that you leave cryptic notes around the house.

How to set up cold storage for your WarpWallet:

  1. Login to the WarpWallet website, and make note of the SHA-256 sum in the URL. 
  2. Save the page locally to your computer as an HTML file, and transfer it to a USB drive. 
  3. Boot up a bootable Linux distro, such as BitKey from above. 
  4. Copy the HTML file over to BitKey. 
  5. Open sha256sum warp.html to verify the SHA-256 sum matches the one from step 1. 
  6. Open the HTML file as a local file in Chrome/Firefox. 
  7. Generate a passphrase that works on an entropy algorithm, such as One Shall Pass. Anything with 58 bits or more of entropy is very secure. 
  8. Use the passphrase in HTML file, and your email address as "salt". 
  9. Scan public key QR code with phone, and transfer it to a device with Internet. 
  10. Shut down BitKey. 

You can now transfer Bitcoin from your online wallet/exchange to your WarpWallet address. You don't have to store your private key anywhere, as it can be regenerated with WarpWallet's website, with the help of your passphrase and "salt". Just don't forget any of the details, or your Bitcoin (and the money invested in them)

These are the most easiest and convenient ways to store Bitcoin offline.

I hope these piece of information HELP!

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