Coldcard Mk4 Bitcoin Hardware Wallet (Unboxing, Setup, Demo and Review) - Paranoid Security

An unboxing, setup, review and demonstration of the Coldcard MK4 by Coinkite.

00:00 - Introduction
00:32 - Unboxing
01:34 - Hardware Overview
02:22 - Setting Device Pin
03:34 - Demonstrating Anti-Phishing Words
03:58 - Generating a Seed Phrase
03:59 - BIP85 Password Auto Typing (Password Manager)
05:03 - Enable NFC Tap and Virtual USB Disk
05:19 - Firmware Update
06:09 - Pairing the Coldcard with Wallet Software
06:31 - Adding to a mobile wallet (Nunchuck) via NFC
08:21 - Recieving Bitcoin with Nunchuck
09:05 - Sending Bitcoin with Nunchuck (via NFC)
09:49 - Debugging NFC Compatability (Galaxy S10e vs Galaxy S20)
11:09 - Importing the Coldcard into BlueWallet via MicroSD
13:22 - Recieving Bitcoin with BlueWallet (Airgapped via MicroSD)
14:29 - Sending Bitcoin with BlueWallet (Airgapped via MicroSD)
16:17 - Adding to a desktop wallet (Sparrow) via USB
17:41 - Recieving Bitcoin with Sparrow (With Hardware Address Verification) via USB
18:07 - Sending funds with Sparrow (via USB)
18:47 - Advanced Features
18:50 - Advanced Feature: Encrypted Digital Wallet Backups
19:16 - Advanced Features: Exporting Wallet Skeletons
19:23 - Advanced Features: Encrypted Digital Wallet Backup
19:27 - Advanced Feature: BIP85 Deterministic Child Seeds
19:34 - Advanced Features: Wallet Master Fingerprint
19:38 - Advanced Features: Ephemeral Seed (Stateless Operation)
19:44 - Advanced Features: Paper Wallet (Single Unrelated Private Keys)
19:59 - Advanced Features: HSM Mode (For use with CKBunker)
20:05 - Advanced Features: NFC Tools
20:10 - Danger Zone: Seed Operations
20:42 - Settings Overview
20:46 - Settings: Login Settings, PINs
21:10 - Settings: Registered Multisig Wallets
21:23 - Encrypted Digital Backups
22:41 - BIP39 Passphrase Support
22:58 - Summary & Conclusion

#btc #bitcoin #hodl

[SuperDesignguy]

I've used a ledger for years. Came here by accident. And this Coldcard is confusing. LMAO

[imranraza]

Bro you made my day, i will be always thank full to you...

I sent some ETH to you from bottom of my heart.

[chain_wizard]

It would be interesting to see the differences and the upgrades from mk4 to coldcard q.

[Varias_Variaveis]

Make a tutorial with the electrum wallet. Thanks

[AndyCreedx]

Does ti have the "hidden wallet" feature? how is it? can I show at the airport that it works as a normal calculator?

[tpks]

Hi Crypto Guide, I have a question. When you order the Coldcard, are you ever concerned they store your personal info or shipping? Do they delete this information, or would you recommend ordering anonymously? Are is that just not a concern at all? Thank you so much for taking the time to answer my questions.

[dank]

Thanks for video, but I was under the impression that coldcard was the best due to its airgapped nature (never being connected to another computer/phone etc, never touching the internet) but the NFC function or USB plug to computer seems to not follow this airgapping principle. Would appreciate your thoughts on this, and thanks for your informative vids

[Chris-zues]

what happens if you enter wrong passcode? does it reset? that would kinda suck

[jonathanarras]

I have a ledger, still haven’t updated new firmware, looking for an alternative. However I don’t want to be the reason I lose all my bitcoin…

[Gerald]

Hello, excellent video! I have an issue with sparrow wallet in multisig. Can I safely use the replace button in sparrow to change one of my key store? And will my funds still be there?

[edotlujan]

Do you think plugging cold card into a wall outlet is an issue and do you think it’s still airgapped if you do whilst still not plugging it into a pc?

[neilsimon]

Great channel! Been using trezor since 2017 and want to migrate to a cold card or jade for Btc only. Do you recommend keeping the same seed phrase or initiating a new seed phrase with the new wallet for enhanced security? It seems sending the funds from old to new wallet with the creation of a new seed phrase could be somewhat stressful for me. Thanks for your thoughts!

[leandrogopro]

Did you realize that you opened the bag without breaking the seal? I did the same thing with mine and I believe this shouldn't be possible. an attacker can open the bag this way and reseal it with heat while keeping the seal intact. I'm very suspicious about this

[OrdinaryManSisu]

Hi,

It would be great to see a backup wallet being made from trezor to coldcard

[elyrod]

Great video thanks. Question, : I developed a habit to the LIVE mobile interface where I could view my bitcoin. Is there any mobile interface I can use with Sparrow to see my BTC on mobile? Thanks!

[d-boy]

How can I trust coldcard will really generate a new seed phrase oppose to choosing pre created one from their internal ROM?

[autohog]

Thought I was following along ok, then everything went poof. Skeleton wallets, matching account types, address explorer...uhg. Anyone want to buy a coldcard, this is way over my head.

[rebeccamccrea]

Do you have a video for google 2FA Authentication app that the accounts on previous phone didn’t transfer over?

[rebeccamccrea]

What’s your thoughts on the ledger nano X and S back door issues?

[bitkong]

I've 2 of these but I'm a little unsure to move from Trezor. One of them was broken out of the box.. Are these truly open source?