Seed phrase backup: paper vs metal
Paper is easy to write and inspect. Metal can improve durability, but the design and storage conditions matter. Both expose the backup to anyone who can read it.
Key points
- Choose a medium for the conditions where it will be stored.
- Check every word and number before relying on a copy.
- A recovery plan may also need a passphrase or multisig configuration.
Compare the storage trade-offs
Metal is a physical durability choice, not automatic protection against theft or mistakes. Compare documented construction and independent testing where available. This guide does not claim hands-on testing of any backup product.
| Question | Paper | Metal |
|---|---|---|
| Getting started | Use a blank card and a legible pen. | Follow the specific plate or tile system's instructions. |
| Fire and water | Can burn, tear, fade or become unreadable when wet. | Resistance depends on material, construction and exposure; it is not a guarantee. |
| Accuracy | Full words are easy to inspect and correct on a new sheet. | Check character positions, abbreviations and tile retention carefully. |
| Theft | Anyone who reads it may gain wallet access. | Durability does not prevent someone reading or copying it. |
Make an accurate backup
Identify your wallet's actual backup format before selecting a card or plate. BIP39 is common, but not universal. Follow the wallet's setup instructions and record words exactly in order.
For paper, use the blank printable cards linked above. For metal, follow the product's encoding instructions. Do not assume that a four-letter abbreviation works for every language or backup format.
Use your wallet's documented backup-check feature. Keep the working wallet intact. Do not import a hardware wallet's backup into an online checker or erase your only working device as a test.
Choose locations you can maintain
Consider who could access the backup, which events could destroy it, and whether you or an authorized successor could retrieve it when needed. A locked container has access and environmental limits of its own.
Separate copies can reduce the chance of one incident destroying everything, but each copy is another place someone could obtain the secret. Choose the number and locations deliberately. Do not split ordinary seed words into homemade partial backups.
Keep completed backups out of cloud storage, photographs and scanning services. Inspect physical condition privately when circumstances change. If you suspect exposure, follow the wallet maker's incident guidance; merely hiding the same phrase somewhere else does not revoke a leaked copy.
Plan for the rest of recovery
An optional passphrase is different from a device PIN. If you use one, its exact value is needed to recover that wallet; plan its recovery separately. A blank seed card is not an inheritance plan.
For multisig, preserve the wallet configuration as well as the required independent key backups. Use the linked recovery and multisig guides for those additional requirements.
Frequently asked questions
Does a metal backup make my bitcoin safe?
It can improve resistance to some physical damage. It does not protect against a wrong backup, theft, or missing recovery information. Check the specific product and your storage plan.
Should I wipe my wallet to test this backup?
Keep your only working wallet intact. Start with its documented backup-check procedure and understand what that check covers before attempting any separate recovery exercise.
Sources and methodology
Claims that can change are checked against the sources below. Product pages report documented features and disclosures; they do not claim hands-on testing unless a test method and evidence are published on the page.
Continue your security plan
Printable seed phrase backup cards
Download blank 12-word or 24-word seed backup cards in A4 or US Letter. Print first, write offline, and check your wallet's backup format.
Device recoveryWhat Happens If a Hardware Wallet Breaks?
Learn why a broken hardware wallet does not automatically lose bitcoin, what recovery requires, what to prepare, and which failures a replacement cannot solve.
Multisig setupHow to Set Up a 2-of-3 Multisig Bitcoin Wallet
A vendor-neutral 2-of-3 Bitcoin multisig setup guide covering signers, wallet policy, descriptor backups, test transactions, recovery drills, and common failures.
Check the complete setup, not one product feature.
Use the local safety audit to review backups, device access, recovery testing, firmware habits, and inheritance without sharing a seed phrase or private key.