What Is a “Seed Phrase” (Or Recovery Phrase) and How Is It Used?
A seed phrase is a sequence of 12 to 24 common words that serves as a master backup for all the private keys in a hierarchical deterministic (HD) wallet. It is used to restore access to the wallet and all its associated cryptocurrency addresses if the original device is lost or damaged.
The phrase itself must be kept extremely secure and offline, as anyone with the seed phrase controls the funds.