# Metal [[Bitcoin/Bitcoin]] Seed Storage Reviews by [[Jameson Lopp]] https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews/coldbit-passphrase/ - Coldbit Stell has overall grade A while Coldbit Passphrase has overall grade A- - Is [[BIP39]] different from a 24 word seed phrase backup? [[Jameson Lopp]] seems to imply that it is so: "Coldbit says that this is designed to store the passwords to your BIP39 encrypted seed phrases, but there is also enough room to store a 24 word seed phrase on it." ![[Screen Shot 2021-07-21 at 4.50.32 PM.png]] "There are too many choices, how do I choose?" 1. Avoid using devices where the device manufacturer knows your private key. Such as Keyois Capsule, Cold Storage Coins, and Ballet Crypto. In some cases it’s possible to have a manufacturer create a BIP38 encrypted backup, which is safe. 2. Simpler is better - more pieces means more potential points of failure. 3. **The best bang for your buck are Blockplate, Crypto Keys, or Steelwallet** 4. The most durable device I’ve tested is the **Quadrat Register** ## Standout devices looking through all rated A overall - Coldbit Steel: https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews/safe-seed/ - Aesthetic, comes with case, sold in pack of 3 - ![[Pasted image 20210722120902.png]] - Quadrat Register: https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews/quadrat-register/ - Super durable but expensive - ![[Pasted image 20210722120812.png]] - Safe Seed: https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews/safe-seed/ - Bang for the buck - $16 durable stamping into copper - ![[Pasted image 20210722120750.png]] - Simbit: - ![[Pasted image 20210722120740.png]] Other entries were removed because - They were dot punch - They didn't save full words, only the first 4 letters - They were too basic and non-aesthetic ## "Why Stress Test Metal Seed Storage Devices?" https://jlopp.github.io/metal-bitcoin-storage-reviews/why TL;DR: - Heat: House fires - Corrosion: Floods - Crush: Building collapse, crushed by debris