A pair of aerospace-grade TC4 titanium alloy tags on which you punch BIP39 word numbers rather than letters. Each pack stores 24 recovery words plus two extra passphrase slots and includes an automatic center punch and guide. OneKey rates the alloy to a 1668°C melting point.
Source: Official website — product page. Last checked 2026-09-18. Spot an error? Tell us.
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Two engraved stainless steel sheets from Swiss maker Shift Crypto, holding up to 24 recovery words at 12 per sheet. An automatic puncher is included and only the first four letters of each BIP39 word need marking. Made in the EU with a two-year warranty.
Shift Crypto's heavy-duty reusable backup, built from thick stainless steel with a screw closure and tamper-evident sticker. Because it uses rearrangeable character tiles rather than punched marks, the stored phrase can be updated at any time.
Blockstream's capsule-style metal seed backup, sold through its own store alongside the Jade hardware wallet. Uses stainless steel character tiles sealed inside a capsule so a recovery phrase survives fire and water.
A hardware wallet that replaces a single seed phrase with a tamper-proof device plus four NFC cards, splitting the key so no single item can be lost or stolen to compromise the wallet. Cypherock also builds non-custodial inheritance features on top of this design.
DCENT's newer flagship hardware wallet, sold through the company's own store and also offered bundled with its R3covery Card recovery kit. Transactions are approved with a fingerprint on the device.
ELLIPAL's own metal mnemonic backup, sold alongside its Titan air-gapped hardware wallets. Records a recovery phrase in steel so it survives the fire and water damage that would destroy a paper copy.