Your seed phrase is your bitcoin. Paper burns, fades, and degrades. Metal backups survive fire, flood, and time. This is non-negotiable security.
The best seed phrase storage is a metal backup, because paper burns at about 451°F and a house fire runs hotter than that. My top pick is the Blockstream Metal SeedQR ($95, titanium). For a word-based backup, Stamp Seed ($190, titanium) is the strongest plate I rank, and SeedPlate ($50) is the best option on a tight budget.
| Best overall | Blockstream Metal SeedQR | $95. Titanium, etched as a SeedQR you can scan straight back into a signing device. |
| Best word plate | Stamp Seed | $190. Titanium plate you stamp by hand. Nothing loose to fall out. |
| Best capsule | Blockstream Capsule | $99. Letter tiles in a sealed 316 stainless steel tube. |
| Best budget | SeedPlate (Coinkite) | $50. 2mm steel you punch with a center punch. |
Updated September 2026
Paper can burn (451°F), get wet, fade from sunlight, be eaten by insects, or degrade over time. A house fire, flood, or even humidity can destroy your only backup. Metal seed storage withstands temperatures over 2000°F and is waterproof. For the price of a nice dinner, you can protect your entire financial future.
Blockstream Metal SeedQR offers the best combination of durability, ease of use, and value. Your seed phrase will survive anything short of a nuclear blast.
Your seed phrase is the only thing that can restore your bitcoin if your hardware wallet is lost, broken, or stolen. Paper fails in ordinary accidents. It burns at around 451°F, it soaks through in a flood, and ink fades over years.
House fires commonly reach 1,100°F and can go higher. Stainless steel melts above 2,500°F and titanium above 3,000°F, so a metal backup survives the fires that destroy paper. It also shrugs off water and does not corrode the way cheap steel does.
Metal backups store your words in one of four ways. Each has a real tradeoff, so pick the one you will set up correctly on the first try.
Every word in the standard BIP39 word list is unique by its first four letters. "Abandon" is "aban", "zebra" is "zebr". That is why most metal backups have space for only four characters per word, and why four letters are enough to restore your wallet.
Write all four letters anyway, even for three-letter words like "act". A consistent format means fewer mistakes when you are restoring under stress.
I score durability first: material, fire and water resistance, and whether the words can move once they are stored. Next comes how easy the backup is to set up without making a mistake, then price. Titanium and permanent marks (punched, stamped, or etched) score highest. Loose tiles lose points because they can move.
A backup only helps if it survives the same event that takes out your hardware wallet. Keep it in a different place from the device, somewhere you control and a thief would not look first.
If you use a passphrase, store it separately from the seed words. Anyone who finds the seed alone then gets nothing. If you have a lot of bitcoin, a multisig setup splits the risk across several keys and locations, and a single found backup is no longer enough to spend.
Stamp, punch, or etch it into stainless steel or titanium, and keep that backup somewhere other than your hardware wallet. Never store it as a photo, in a notes app, or in a password manager.
Yes. A metal backup costs $50 to $190 and protects everything you hold against fire, flood, and time. Paper fails in exactly the accidents that make a backup necessary.
Titanium melts at a higher temperature (above 3,000°F versus about 2,500°F for stainless steel) and resists corrosion better. Both survive a typical house fire. Titanium is the better pick if you want the largest safety margin.
Keep it out of password managers. Anything online or on a computer can be hacked or leaked, so your seed phrase should exist only on your hardware wallet and on a physical backup.
The first four letters of each word are enough, because every word in the BIP39 list is unique by its first four letters. Keep the words in the right order.
