Bip39. The wallet handles the hefty lifting of changing the mnemonic words via a strategy of complex hashing, salting, and checksum functions right into a binary "seed," which is then used to make the all-crucial personal and community encryption keys. Anybody else who discovers the phrase can steal the bitcoins, https://preniumdirectory.com/listings13139839/bip39-standalone-https-linktr-ee-bip39-not-known-details-about-bip39-online