Glossary
Seed Phrase
A human-readable backup — typically 12 or 24 words — that deterministically regenerates every key, address, and account in a wallet.
A seed phrase is the BIP-39 encoding of the entropy a wallet uses to derive its keys. From the same seed, the same wallet software will always produce the same private keys, public keys, and addresses across every supported chain.
It is the single most sensitive piece of data in self-custody. Anyone with the seed has every key; anyone without it (including the wallet vendor) cannot recover them. Store it offline, never type it into a web form, and treat it as the only real backup.