21Relay
Beginner curriculum
Lesson 2310 minReviewed July 2026

Seed Phrases, Backups and Recovery

Understand what wallet recovery words can control, how to protect a backup and why a recovery plan should be tested carefully.

Learning outcomes

By the end of this lesson, you should be able to

  • Recovery words may recreate the wallet's spending keys.
  • Never share recovery words with support staff or websites.
  • Use wallet-generated words and preserve their order.
  • Protect backups from both physical loss and unauthorised access.
1

Recovery words can recreate a wallet

Many wallets generate a sequence of recovery words during setup. Compatible wallet software may use those words to regenerate the keys needed to control the wallet's bitcoin.

Wallet designs differ. Follow the documentation for the wallet you selected rather than assuming every product uses the same seed format or recovery process.

2

Treat the words like the bitcoin

Anyone who obtains a usable recovery phrase may be able to restore the wallet and spend its funds. A recovery phrase is not a support code, identity check or password reset token.

Never send it in a message, enter it into a website, photograph it or store it in ordinary cloud notes. Legitimate support staff do not need it.

3

Build a backup that survives the device

Record the words accurately in the exact order requested by the wallet. Store the backup offline somewhere protected from loss, fire, water, theft and casual discovery.

Do not invent your own words. If the wallet supports an additional passphrase, understand that losing either the words or the passphrase can make recovery impossible.

4

Test the recovery plan safely

Confirm that the written backup is complete during setup, before significant funds are received. Follow the wallet maker's documented verification or recovery process on a trusted device.

Never test a backup by typing it into a random website. Keep a separate record of non-secret information such as the wallet name, recovery instructions and where trusted family members can find guidance.

Visual recap

A safer recovery plan

The backup should survive loss of the original device without becoming easy to steal.

01

Wallet creates recovery material

02

Record offline

03

Verify accuracy

04

Store securely

05

Review recovery plan

Key vocabulary

Terms worth knowing

Recovery material
Secret information used by compatible wallet software to reconstruct spending keys.
Passphrase
Optional additional secret material that can produce a different wallet and must be backed up separately.
Recovery test
A controlled check that a backup can restore the intended wallet before an emergency occurs.

Worked example

The phone is lost

A learner loses a phone containing a wallet. The bitcoin is not inside the phone, but access depends on whether the wallet can be recovered safely.

  1. 1Use a trusted replacement device and official wallet source
  2. 2Retrieve the offline backup without photographing or transmitting it
  3. 3Restore using the wallet's documented process
  4. 4Confirm expected addresses or history before receiving more funds

A tested backup converts device loss from a potential loss of funds into a recoverable equipment problem.

Common misconceptions

What learners often get wrong

Misconception

A seed phrase is safe if stored in a password-protected cloud note.

More accurate

Cloud compromise, account recovery and device sync create additional attack paths; offline storage is generally safer.

Misconception

A passphrase is just an app password.

More accurate

In wallets that support it, a different passphrase can derive a completely different wallet; forgetting it can permanently block recovery.

Try it yourself

Write a non-secret recovery plan.

  • Name the wallet and official recovery documentation
  • Record where instructions—not seed words—can be found
  • List the trusted hardware required
  • Schedule a periodic backup check

Use fictional values and public information only. Never enter seed words, private keys or other wallet secrets into a learning exercise.

Key takeaways

  • Recovery words may recreate the wallet's spending keys.
  • Never share recovery words with support staff or websites.
  • Use wallet-generated words and preserve their order.
  • Protect backups from both physical loss and unauthorised access.
  • Test only through the wallet's trusted documented process.

Lesson recap

Check what you learned

Reveal each model answer, then honestly mark whether you understood it or need another review.

1 of 3

Recall

What should you do when someone claiming to be wallet support asks for your recovery phrase?

References

Further reading

Lesson progress

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