Seed Phrase Generator & Checker (Seedgen) Building entropy can be done manually or with a computer. Equally solutions have benefits and drawbacks, but when producing entropy, care has to be taken making sure that the procedure is finished properly and is also free of charge from outside manipulation or observation. https://ledbookmark.com/story4211268/bip39-java-not-known-factual-statements-about-bip39-word-list