Connecting Coldcard MK4 Wallet: Practical Guide for Sparrow, Electrum & Nunchuk (USB, MicroSD & NFC)

If you have not seen the Coldcard setup video, check it out here:
Coldcard MK4 Setup Guide Secure Your Cryptocurrency Today | Step-by-Step Tutorial

Unlock the full potential of your Coldcard MK4 hardware wallet in this comprehensive tutorial. Your cryptocurrency assets' safety is paramount, and Coldcard offers one of the most secure storage solutions on the market. However, to truly harness its power, it's important to know how to connect it with various external wallets effectively.

In this video, we'll walk you through each step of the process, demonstrating how to connect your Coldcard MK7 to the Sparrow Bitcoin Wallet, Electrum Bitcoin Wallet, and Nunchuck Bitcoin Wallet. We'll guide you through using different methods of transaction—whether it's via USB Cable, MicroSD Card, or NFC Signal.

🔌 For the Sparrow Bitcoin Wallet, we'll explore how to connect using the USB Cable.
💾 With the Electrum Bitcoin Wallet, we'll teach you how to use the air-gapped solution with the MicroSD Card.
📲 Lastly, for the Nunchuck Bitcoin Wallet, we'll dive into using the NFC Signal for air-gapped transactions.

Regardless of your preference, this guide is sure to help you secure your transactions while using your Coldcard MK4 wallet. Don't forget to hit the like button if you find this video helpful, and subscribe to our channel for more valuable cryptocurrency insights. Comment below if you have any questions or suggestions for our next video. Happy Hodling!

00:00 - 🔌 Unboxing and Setup Recap
01:36 - 🐦 Connecting Coldcard to Sparrow Wallet via USB
12:05 - 📀 Setting up Airgapped Transactions with Electrum Wallet via MicroSD
22:34 - 📡 NFC Transactions with Nunchuck Wallet
28:30 - 🔍 Overview and Comparisons

Coldcard Security FAQs

Coldcard open-source firmware repository on Github

💡 DISCLAIMER: This video is for educational purposes only and should not be considered financial advice. Always do your own research before investing in cryptocurrencies.

👉 Don't forget to LIKE, SHARE, and SUBSCRIBE for more content on cryptocurrency and DeFi! Hit the notification bell to stay updated on our latest videos. Drop your questions and suggestions in the comment section below, and I'll do my best to address them in future videos or during our live Q&A session.

#coldcard #coldstorage #bitcoin

[Vigorf]

Good normal length video .... jeeezzzz that 2 hours are crazy no time for that

[gibbons]

Why did you choose Electrum for the Airgapped Transaction? Are there any benefits to using Electrum vs Sparrow? Thanks!

[paulvincent]

Sparrow is the best wallet for PC and should only be used air gapped.

[eduardobacker]

in case i created a wallet at spawwor and connected in the laptop, should i re-do my seed phases for security reason in case i would like to use only offile ?

[disco.jellyfish]

It asks me to "Insert an SD card to do this operation" when I am trying to generate a wallet file for Sparrow. But I do have an SD inside the card reader for exactly that purpose but the coldcard doesnt seem to recognize it.

[cpaBTC]

Best video on this topic ive seen. Thanks!

[d-boy]

can you use the same wallet created in nunchuck for multiple transfers? or do i need keep generating different wallets from the cc4 key? thanks

[fidadida]

Hi your video's are really helpful. I have some questions and I haven't been able to find the answers anywhere. I hope you know this. Once I've exported a JSON file to import in Sparrow can I delete the JSON file from the sd card? If I don't delete it can I always just import the first JSON file on the sd card or do I need to export it again from the coldcard when I need it for a new computer later? I assume the first JSON file would be fine to use?

[pistolpete]

mine wont connect to my coldcard. i get an error that says "error connecting to wallet" .."error executing hwi"... any help?

[pedropichardo]

quick question, why you keep your coldcard connected to the usb-c cable while doing air gap sign?

[GTop-]

Hi. Have a problem, where u connect the usb, my computer cant find any devise :(

[Still-Swing]

do you need three physical MK4 coldcards in order to do multisig? Thanks

[southbayproducts]

Thank you Sir. waiting for this one any more cold card tips will be great

[Firemedic]

NFC is airgapped? So there is no possible way to hack over nfc?

[kimgaugemusic]

Great tutorial! One question, how is transferring data via SD card more secure than the plain USB cable? Aren't they both touching the computer and inevitably interfacing with the internet? If the private key is secured by the two security chips on the Coldcard what is the worry?

[iah]

The "AI you" just seems to be getting younger.

[ricochetrabbit]

Aha!!!!.... Krypto Dad takes vitamin D3 and

[worlverineloganx]

Ok… time to show how to work with the passphrase

[benznbq]

This is so complicated and confusing for a beginner.

[dasfahrer]

Interesting, but if this is what's required to do self-custody of the BTC you own then BTC doesn't have a future. Enough people aren't going to do this to matter, so when others' BTC, that is being held by Coinbase or whatever other custodial exchange they have it on, gets confiscated by the various gov'ts, there will be so little BTC available for circulation at that point that it won't be worth spending the money to upkeep the infrastructure required to support it.