Preserve your #Bitcoin private key (seed words, passphrase, and multisig parts) on metal. 3mm solid plate with deep engraved alphabet and grid guide, made from 316L (marine-grade) stainless steel. Always store seed words, passphrases, and multisig parts in separate locations.

It's so important to understand how secure your #Bitcoin wallet's (2nd factor security) passphrase is. When created by stringing together... 3x random BIP39 words = 33-bit secure (est.d to take 8 seconds to hack with a supercluster of ASIC computers) 4x random BIP39 words = 44-bit secure (est.d to take 4 hours to hack with a supercluster of ASIC computers) 5x random BIP39 words = 55-bit secure (est.d to take 1.5 years to hack with a supercluster of ASIC computers) 6x random BIP39 words = 66-bit secure (est.d to take 2,000 years to hack with a supercluster of ASIC computers) bitplates.com/how-secure-is-…

Don't split up a #Bitcoin private key by splitting up seed words; it massively reduces security against brute-force attacks: ❌ SEED WORDS + SEED WORDS You can safely split up a private key by adding a passphrase; this massively increases security: ✅ SEED WORDS + PASSPHRASE

So, you've protected your #Bitcoin seed words with 2nd-factor security. eg. passphrase, multisig, etc... ...but you still want to know if anyone has sneaked a peek at them? This is why we provide tamper-proof labels with every BitPLATES Domino plate.

The most important job of #Bitcoin seed storage devices is to PRESERVE your private key. Using a mechanical locking device to hide a private key is VERY dangerous because it gives a false sense of security. Solution = 2FA ie. Store two separate parts SEED WORDS + PASSPHRASE .

The BIP39 passphrase (or '25th-word') adds 2nd factor authentication (2FA) security to your #Bitcoin wallet, and offers protection if your 24 seed words are ever exposed. But how secure is your passphrase? See updated chart: bitplates.com/how-secure-is-…

I used to get frustrated by broken systems, but then I read the following quote... "Every system is perfectly designed to get the result that it does" - W. Edwards Deming If we aren't happy with the results of a system, we need to move to a system that gives us better results.

Why are Domino plates made from 316L stainless steel? It performs better than other metals with extreme changes in temperature (ie. cold water sprayed onto a house fire) and is one of the reasons why @elonmusk chose stainless steel for the SpaceX rockets: labroots.com/trending/space/…

Keep your #Bitcoin bullet-proof. 💥

Counterintuitively, this provides more security than most BIP39 passphrases. The remaining 12 words could be up to 2,048^12 possible combinations (128-bit secure). The main disadvantage of this method, is that it relies on the integrity of the seed phrase. bitplates.com/how-secure-is-…

Without giving too much away, there are literally hundreds of places to hide 3mm flat metal plates. 😉 #Bitcoin backup

Don't kick yourself, punch your seed words. #Bitcoin backups 😎

Keep your #Bitcoin in cold storage. 🥶 #LowTimePreference

If you know what an Automatic Centre Punch tool is, there's a good chance you're a #Bitcoin'er. 😎

Keep your #Bitcoin in cold storage. 🥶

Bitcoin is the only asset that comes with built-in 'plausible deniability'. 1. Keep a small amount of sacrificial #Bitcoin in a wallet created with ONLY seed words. 2. Keep your main funds secure in a secret wallet created with seed words + passphrase (must store separately).

If you're new to #Bitcoin -Buy an air-gapped signing device -Write down seed words + passphrase -Test that you can re-create your wallet -Backup seed words + passphrase on metal plates -Destroy paper copy -Hide metal plates (inc. any extra copies) in separate locations.