Quick answer
A seed phrase is a human-readable backup that can recreate a wallet’s derived keys.
What is Seed phrase?
A seed phrase is a sequence of words generated according to a wallet standard and used to derive one or more private keys. Anyone who has the phrase may be able to restore and control the wallet.
The useful way to approach this term is to separate its definition from the assumptions people often attach to it. In crypto, the same word can appear in a protocol rule, a user interface, a market-data label, or a marketing claim. Check which layer the explanation is describing.
Why does seed phrase matter?
The phrase is often the most sensitive recovery secret in a self-custody setup. It should be stored offline, never typed into a website, and never shared with support, an app, or an alleged airdrop claim page.
Concrete example
See it in a real situation
A wallet is lost, but the owner restores it on a replacement device using the correct seed phrase. The app derives the same accounts and displays the on-chain balances.
Common misconceptions
What this term does not mean
- A seed phrase is not a customer-support ticket or a password-reset code.
- A photo of a seed phrase is still a digital copy that can leak through backups or account compromise.
Related terms
Sources and further reading
Definitions are written for education and checked against the sources below where relevant. A source can explain a protocol or rule without endorsing every product built around it.