i know about brain wallet.Brainwallet.io is a deterministic bitcoin address generator. Store bitcoin in your brain by remembering your passphrase and salts. Address generation takes place in your browser, and no information is ever sent to our server.Use a long, unique password that is never used in any song, literature, or media. If you use a weak password, you are at risk of having your bitcoin stolen. We recommend a minimum of 8 random words. Click the "random" button to have a secure 12-word passphrase generated for you. If you forget your passphrase, your bitcoin will be lost forever. Please keep in mind that your passphrase and salts are case sensitive.