Bip39 Storing entropy (such as trying to keep a deck of cards in a certain shuffled order) is unreliable compared to storing a mnemonic. Rather than storing entropy, store the mnemonic created from your entropy. Steganography may be helpful when storing the mnemonic. You could see the total source code https://bookmarkbooth.com/story19020322/bip39-dice-what-does-bip39-mean