Questions tagged [coldcard]

Coldcard is an open source hardware wallet built by Coinkite. A hardware wallet (or hardware signer) generates, stores and signs with cryptographic keys.

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Verify Receive and Change Addresses

I run a coldcard with Electrum and Electrum-Personal-Server. As I understand it, we use hardware wallets because we don't trust our laptops. However, I've only been able to verify the sending ...
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How to best practice restoring a wallet in bitcoin core

I have a test wallet in bitcoin core that I want to play around with and get comfortable with before I move my btc from blockstream green wallet. I primarily use that wallet because so far it has been ...
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Is it possible to use Electrum to create a multisig wallet with a trezor and an airgapped coldcard?

I set up a 2-of-3 multisig using Electrum, a Trezor, and a Coldcard. During testing, I ran into issues using the Coldcard to sign. My approach: (On Electrum) File -> New/Restore -> Multi-signature ...
paddy's user avatar
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Sparrow Wallet - PostMix Tab

How do you load the postmix tab in Sparrow wallet. The documentation makes little to no sense on how to load the postmix tab
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Transferred coin from Ledger Live to Sparrow

I transferred my bitcoins from Ledger Live Wallet to Cold Card. When I launch Sparrow, it shows the spent amount from ledger live and the coins received to their respective addresses. Is it expected ...
caliGeek's user avatar
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How can I recover funds recovery from coldcard?

I recently bought a Coldcard mk4 and did some tries to understand how it works. I moved a tiny amount to test it but now I can't recover it. What I think happened is: I exported the wallet created ...
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Setting Up Multisig Correctly

I'm looking into setting up a multisig setup using Sparrow, and wanted to see if anyone can find any flaws in my set up, and potentially accessing my funds if I lose a key. set up = 2 of 3 Key store 1 ...
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Is this scheme for multisig audit of Trezor + Coldcard ok?

My plan is to make a multisig between coldcard and trezor. I want to audit and verify that I indeed own the 2 keys of these wallets, using a raspberry pi zero (no wifi/bluetooth by definition) on a ...
Gatonito's user avatar