Seed phrases in simple terms
The backup that can recreate your wallet
A seed phrase is a sequence of words generated by a Bitcoin wallet. It is used to derive the private keys controlled by that wallet.
The phrase may be shown as 12, 18 or 24 words depending on the wallet. The exact words and their order are essential.
If the original device is lost or damaged, the seed phrase can normally restore the wallet on compatible software or hardware.
Critical warning
Anyone who obtains your seed phrase may be able to take control of the wallet without your permission.
Why it matters
Protect against loss and theft
It is a recovery backup
A seed phrase can recreate the wallet's private keys and restore access to the associated bitcoin.
It must remain private
Anyone who obtains the full phrase may be able to recreate the wallet and spend the funds.
It is not a password reset
There is usually no company that can cancel, replace or recover a lost self-custody seed phrase.
It must be copied exactly
The words, spelling and order must be recorded accurately for reliable recovery.
If the wallet fails
The seed phrase may allow you to restore the same wallet on a replacement device.
If the phrase leaks
The wallet should be treated as compromised, even when no funds have moved yet.
What never to do
Keep recovery words offline
Most seed phrase theft occurs because the words are copied onto an internet-connected device or entered into a fake recovery process.
Never photograph it
Phone photos may be copied to cloud backups, viewed by apps or exposed if the device is compromised.
Never store it in cloud notes
Email, cloud drives, password-free notes and messaging apps create unnecessary online exposure.
Never type it into a website
A legitimate recovery process should only occur inside trusted wallet software or on the intended signing device.
Never share it with support
Wallet companies, exchanges and technical support staff do not need your recovery phrase.
Simple rule
Do not type your seed phrase into a website, chat, email, cloud document or support form.
Backup methods
Choose a durable physical backup
Paper backup
Write the phrase clearly on durable paper and store it in a secure, private location.
Strengths
Simple and inexpensive
Easy to read during recovery
No electronic exposure
Weaknesses
Vulnerable to fire and water
Can fade or tear
Easy to lose or photograph
Metal backup
Record the phrase using a purpose-built metal plate or stamped metal system.
Strengths
More resistant to fire
More resistant to water damage
Suitable for long-term storage
Weaknesses
Higher cost
Can still be lost or stolen
Incorrect stamping can cause recovery problems
Multiple physical copies
Keep carefully controlled backups in separate secure locations to reduce single-location risk.
Strengths
Protects against one location being destroyed
Improves recovery resilience
Useful for disaster planning
Weaknesses
Each copy creates another theft risk
Locations must remain private
Copies must remain identical and current
Secure storage
Protect the backup without making recovery impossible
Private
The location should not be visible or accessible to visitors, workers or casual observers.
Durable
The backup should survive the environmental risks expected at the storage location.
Recoverable
You or the intended beneficiary must be able to locate and understand the backup.
Separated
Avoid storing the wallet device and its only recovery backup together.
Documented
Keep clear recovery instructions without exposing the phrase itself.
Tested
Verify that the recorded phrase can restore the wallet before relying on it.
Physical hazards
Consider fire, flood, humidity, theft, accidental disposal and unauthorised discovery.
Access planning
Security should not be so complicated that you or your intended beneficiary cannot recover the wallet.
Recovery testing
Verify the backup before relying on it
A backup that has never been tested may contain a missing word, spelling mistake or incorrect order.
Start with a new or low-value wallet
Practise recovery before using the wallet to secure a significant amount of bitcoin.
Confirm the phrase was recorded correctly
Check every word, spelling and position against the wallet's original backup screen.
Use the wallet's recovery-check feature
Many hardware wallets provide a safe on-device method to verify the backup.
Avoid entering the phrase into a normal computer
Use the intended secure recovery flow whenever the wallet supports it.
Confirm the same wallet is restored
Verify that the expected addresses or a small test balance appear correctly.
Return the backup to secure storage
After testing, ensure the phrase is not left visible, copied or exposed.
Use the safest available method
When a hardware wallet offers an on-device backup check, use that feature rather than typing the phrase into a normal computer.
Phishing warnings
No legitimate person needs your seed phrase
A message claims your wallet must be verified immediately
A website asks for all recovery words
A support agent offers to restore the wallet for you
An app claims a seed phrase is required for a software update
A person sends a recovery form or online backup tool
A device arrives with words already printed inside the package
Loss and exposure
What to do when something goes wrong
Wallet device is lost or broken
The seed phrase can normally restore the wallet on a compatible replacement device or wallet.
Seed phrase is lost but the wallet still works
Create a new wallet with a new backup and transfer the funds before the device fails.
Seed phrase is exposed
Treat the wallet as compromised and move funds to a newly created wallet with a new seed phrase.
Both wallet and phrase are lost
The bitcoin may be permanently inaccessible because no recovery authority exists.
Exposed phrase
A seed phrase cannot be made secret again after it has been exposed.
Create a new wallet with a new seed phrase and transfer the funds to the new wallet as soon as it is safe to do so.
Lesson summary
The important points
A seed phrase can recreate the wallet's private keys.
Anyone who obtains the phrase may be able to spend the funds.
Keep recovery words offline and never type them into websites or support forms.
Use a durable physical backup stored in a private location.
Test the recovery process before storing significant funds.
Treat an exposed seed phrase as permanently compromised.
If both the wallet and every backup are lost, recovery may be impossible.