Bip39 Pub Dev This additional complexity raises the possibility of misplacing the passphrase, and therefore shedding your copyright. Any person else who discovers the phrase can steal the bitcoins. It need to be held mystery, one example is it have to not be typed into any Web page. Mnemonic phrases https://allkindsofsocial.com/story4052337/bip39-passphrase-inheritance-the-definitive-guide-to-bip39-phrase