In this post, we consider a simple way to create/restore and manage BTC virtual offline wallets, with bitaddress.org and public DPGs.

Step 1. Select easy memorable key, date and salt. For example, key=”MyName”, date=2026/1/1 salt=”book111”. Using a public DPG, generate 20 output strings with the key and date.

Step 2. Go to this website: https://www.bitaddress.org/ and click on the “brain wallet” tab in the top right corner of the table.

Disconnect from internet!!!

Create a passphrase using an easy to remember formula. For example, we use this formula: passphrase=string1+salt+string 5, where string 1 is the first string in the output of the public DPG https://www.dynpass.online/ and string 5 is the fifth string in the output of the public DPG.

passphrase=”ndn_{5z$_dGqbyEW@sZ_book111NXVF#=dPrxZ6b7[J37oA”

Enter this passphrase into the corresponding fields and click on the “View” button.

You will see your private key and BTC address at the bottom. For the reason that your device is offline, hackers can not access your device via internet, now. You can use your private key to send BTC and your BTC address to receive BTC. When you close your web browser, assuming the web browser does not save data to cache or any other place, your private key disappear from the real world. For the reason that your private key does not exist in the real world, it can not be hacked, stolen, broken, lost, confiscated, forgotten, etc. When you need your private key again to send BTC, you use the same procedure to recover your private key. With public DPGs it is easy to manage up to 20 virtual offline BTC wallets. With private DPGs it is easy to manage up to 100 virtual offline BTC wallets.

P.S. If you want to have a local personal copy of bitaddress.org wallet generator/converter, you can get it from here: https://github.com/pointbiz/bitaddress.org