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jimbocoin 🃏

#Bitcoin key security levels:

Level 0: Not your keys.

Level 1: Hot wallet (keys on online device).

Level 2: Single-sig cold wallet (keys on eternally quarantined hardware)

Level 3: Single-sig cold wallet w/ passphrase

Level 4: Multisig

Level 5: Multi-vendor multisig

Level 6: Multi-vendor multisig w/ passphrases

Level 7: Multi-vendor multisig w/ passphrases, geographically distributed

Each level increases your security against particular vulnerabilities, but complicates your setup. Find the highest level you can confidently operate.

Greeny 2y ago

Best hww? Cold card? Blockstream jade, passport??? Just threw my ledger in the trash😂😂

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Discussion

jimbocoin 🃏 2y ago

The best #Bitcoin hardware wallet is to have multiple different vendors working together in a multisig quorum, where no vendor can make quorum on their own.

That way, if any of your vendors has a key-leaking vulnerability, your stack is still safe.

Greeny 2y ago

Yeah ok But if u had to pick one for level 3…. What would it be?

jimbocoin 🃏 2y ago

Something that either lacks USB, or that you never plug into USB. Must support PSBT via microSD card or camera/screen.

But the risk isn’t worth it, IMO. If the complexity of multisig is scaring you off, try Sparrow wallet. It’s easy to make multisig hot wallets with Sparrow to play around with.

Shawn C. 2y ago

Saw an article they all use same secure element so common failure mode regardless of HWW vendor?

jimbocoin 🃏 2y ago

It depends on the nature of the vulnerability. More variety would be better through.

Shawn C. 2y ago

I like the look of the new Coldcard that looks like a Blackberry.