Wallets
Seed Phrase
A list of 12 or 24 random words that can recreate your wallet and all its private keys.
Last Updated
2026-03-29
Related Concepts
What is Seed Phrase?
A seed phrase is a list of 12 or 24 random words that encodes the master key for a cryptocurrency wallet. The same phrase always regenerates the same private keys, allowing full wallet recovery on any compatible device.
How does Seed Phrase work?
- A wallet generates a random seed and converts it into words from the standardized BIP-39 list.
- These words deterministically derive all private keys and addresses in the wallet.
- Entering the phrase into any compatible wallet instantly restores access to all funds.
Why does Seed Phrase matter?
It is the ultimate backup for self-custody. Losing it means permanent, unrecoverable loss of funds.
Anyone who obtains it gains full control of the wallet.
Key features of Seed Phrase
- 12 or 24 words from the BIP-39 standard list
- Portable across wallet brands and platforms
- Must be stored offline never digitally
- Single point of failure requiring extreme physical security
Examples of Seed Phrase
Creating a MetaMask wallet generates a 12-word phrase. If your device is lost, entering the phrase into a new MetaMask instance restores full access.
Hardware wallet manufacturers engrave phrases on metal backup cards for fire and water resistance.