Paper Burns: Every Metal Seed Backup Compared (2026)

Disclosure: this guide contains affiliate links. If you buy through them, Terminalcraft earns a commission at no extra cost to you. We only recommend gear we would trust with our own keys — and we tell you when the budget option is the right option.

Your XRP does not live in your house. It lives on the ledger, replicated across every validator on earth. Your house can burn to the foundation and your coins will not move a single drop.

What burns is your access.

Paper ignites at roughly 233°C. The average house fire runs 600–1,100°C. The seed phrase you wrote on a notepad page and taped inside a drawer is gone in the first ninety seconds — and with it, everything it controlled. No support line. No password reset. The ledger doesn’t care that you meant well.

Stainless steel melts at about 1,400°C. Titanium at 1,668°C. That’s the entire pitch for metal seed backups, and it’s why every serious holder eventually buys one. The only real questions are which one, and which ones are overpriced junk. That’s what this guide answers.

Why paper fails (it’s not just fire)

Fire gets the headlines, but paper backups die quietly all the time:

Water. A burst pipe, a flooded basement, a leaking roof. Ink runs, paper rots.
Fading. Thermal receipt paper and cheap ballpoint ink degrade in a few years. People have opened their “safe” backup to find a blank page.
People. A spring clean, a helpful relative, a move between homes. Paper looks like trash because it is trash.
You. The classic: writing one word wrong and never verifying. The backup fails the only time it’s ever used.

A metal backup solves the first three. The fourth one — verification — we’ll get to at the end, because for XRPL holders there’s a trick almost nobody covers.

What actually matters in a metal backup

The metal. 304 or 316 stainless steel survives a house fire with margin. Titanium survives anything short of a crematorium. Avoid aluminium anything — it melts at 660°C, which is inside house-fire range. An aluminium “fireproof” backup is marketing, not engineering.

The method. This is the real differentiator:

Punched — you hammer or press marks directly into the plate. Permanent, no moving parts, nothing to shake loose. The most durable format there is.
Tiles — you slide laser-engraved character tiles into a frame. Flexible (any characters), reusable, but the tiles are held mechanically — quality of the enclosure matters.
Engraved/etched — you scratch the words in yourself with an engraving pen. Cheap, but your handwriting under stress is the weak point.

The format. Most products assume a 12/24-word BIP39 seed phrase, storing the first 4 letters of each word (which is enough — BIP39 words are unique at 4 letters). If your backup is not a word list — more on XRPL secret numbers below — this suddenly matters a lot.

The comparison

Prices are manufacturer list prices at publication and move around — check the linked pages for current numbers.

The verdicts

Best overall: Trezor Keep Metal 24-word — $99

Punched marks in aerospace-grade 304 stainless, with a pre-marking pen so you can dry-run the layout before committing, and tamper-evident seals for storage. No tiles to rattle loose, no ink to fade, no assembly to get wrong. You physically cannot un-punch steel, which is exactly the property you want in the document that controls your money. Works with any BIP39 wallet, not just Trezor’s.

👉 Trezor Keep Metal 24-word — and if you’re buying anything else from Trezor at the same time, this link gives you 10% off shop-wide.

Using Trezor’s newer 20-word backup, or splitting your backup across locations with multi-share? Get the matching 20-word single-share or 20-word multi-share version — the word count is stamped into the layout, so buy the one that matches your wallet.

Best for XRPL holders: Cryptosteel Capsule — $99

Here’s the thing every mainstream comparison misses: not every crypto backup is a list of English words.

If you set up your XRP wallet with Xaman, your backup is secret numbers — eight blocks of six digits. If you’re running an older XRPL account, it might be a family seed starting with s. Word-based punch plates are built around BIP39 word lists; digits and arbitrary strings are exactly what they’re bad at.

The Cryptosteel Capsule is tile-based and character-agnostic — letters, numbers, whatever your secret actually is, up to over a hundred characters in a sealed stainless cylinder. That makes it the correct answer for secret numbers, family seeds, and anything else that isn’t a neat 24-word list.

👉 It’s sold through Ledger’s official shop as the Cryptosteel Capsule Solo — same product, and you can bundle it with a hardware wallet in one order.

Best budget: Keystone metal backup — $49

Half the price, 304 stainless, sliding-letter system, does the job. No affiliate relationship here — it’s simply the honest answer at this price point, and a $49 steel backup beats a $0 paper one by exactly the value of your stack. The ELLIPAL plate at $45 is fine too if you’d rather engrave.

The premium flex: Cryptotag Zeus — $139

Titanium, punched, tested by people who enjoy shooting their backups with firearms and posting the results. If your holdings justify it, nothing survives harder. For most people the $99 steel options are already past the “survives your house fire” bar, which is the bar that matters.

The zero-budget option nobody sells

A stack of stainless washers, a $15 set of letter punches from the hardware store, and a bolt through the middle. Ugly, effective, and better than paper by a thousand kilometers. If money is tight, do this today and upgrade later. The system doesn’t grade on aesthetics.

Where to keep it (the part people get wrong)

A steel backup protects against fire and water, not against a visitor with eyes. Whatever you buy:

Keep it off-site or well hidden — a backup next to the hardware wallet protects nothing. Never photograph it. Never “temporarily” type it into a phone. And use the tamper seals if your product ships them — knowing your backup was looked at is almost as important as the backup itself.

One steel plate in a good hiding place beats three copies scattered carelessly. Every copy is another door into your money.

Verify before you trust it

The most common backup failure isn’t fire. It’s a backup that was wrong from day one — one word misheard, two digits swapped — discovered years later, at the worst possible moment, by the person who needed it most.

So verify: restore from the metal (not from memory) on a wiped or spare device before you consider the job done. Yes, it takes an evening. It’s the difference between a backup and a decoration.

And if your backup is XRPL secret numbers: those eight blocks carry a built-in mathematical self-check that lets you verify each block with a pencil — no device, no app. Almost nobody knows it exists. We’re publishing the full walkthrough this week; the Terminal Brief gets it first.

FAQ

Do I need a metal backup if I already have a hardware wallet?

Yes — arguably because you have one. The hardware wallet protects your keys from the internet. The seed backup protects you from losing the hardware wallet. That backup is a piece of paper right now, and paper burns.

Punched, tiles, or engraved — which is most durable?

Punched marks in solid steel are the gold standard: no moving parts, nothing to fade. Tiles are close behind and win on flexibility (any characters). Hand-engraving is only as good as your engraving.

Do metal backups work for XRPL secret numbers?

Word-based punch plates don’t — they’re built for BIP39 word lists. Use a character-agnostic tile system like the Cryptosteel Capsule for secret numbers and family seeds.

Will a $45 plate really survive a house fire?

If it’s genuinely 304/316 stainless, yes — steel’s melting point is several hundred degrees above house-fire temperatures. What cheap products compromise on is the mechanism and tamper evidence, not the metal’s physics. Avoid aluminium products entirely.

Should I store my seed phrase in a password manager instead?

No. A seed phrase in any online system — password manager, cloud note, email draft, photo roll — is one breach away from being everyone’s seed phrase. Cold assets deserve cold backups.

Terminalcraft covers XRP, the XRP Ledger, and the fight over who controls money. Not financial advice — but “don’t keep your life savings on a piece of paper” is barely advice, it’s physics.