Uploaded July 2026 | Updated September 2026, 2 weeks ago
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In this video, I discuss the Coldcard disaster in more detail, and show you how you can use Sparrow Wallet to temporarily hold your Bitcoin private keys while you look for another solution to replace Coldcard.
Not investment advice! Consult a financial advisor.
Watch this first:
youtube.com/watch?v=tOnQRVKxTqs
Were they using a pseudo-RNG?
github.com/Coldcard/micropython/blob/4107246f8a080807b62c3b4838e71e812ea68b6f/ports/stm32/rng.c#L64-L98
Good mobile wallets:
wallet.bullbitcoin.com/en
bluewallet.io
Sparrow Wallet:
sparrowwallet.com/download
My thoughts on NVK, founder of Coinkite/Coldcard:
https://x.com/mattkratter/status/2016282395260158134
https://x.com/search?q=from%3Amattkratter%20nvk&src=typed_query
The Best Hardware Wallet In Bitcoin (SeedSigner):
youtube.com/watch?v=TEnO2s1IJu4
seedsigner.com
NVK apologizes:
https://x.com/nvk/status/2083216713693151552
A possible victim:
https://x.com/migameegs/status/2083230223730987120
Self-custody is still the safest option:
https://x.com/leo_haf/status/2083228826474045487
I am not being paid or otherwise compensated by any company or cryptocurrency project that I mention in my videos. My opinion is not for sale. Please do not contact me with any affiliate or advertising deals.
#Bitcoin
#Coldcard
#hardwarewallet
Disclaimer
Neither Matthew Kratter's Bitcoin University, nor any of its directors, officers, shareholders, personnel, representatives, agents, or independent contractors (collectively, the “Operator Parties”) are licensed financial advisors, registered investment advisors, or registered broker-dealers. None of the Operator Parties are providing investment, financial, legal, or tax advice, and nothing in this video, on this YouTube channel, or at www.Trader.University or BitcoinUniversity.com (henceforth, “the Sites”) should be construed as such by you. This video, channel, and the Sites should be used as educational tools only and are not replacements for professional investment advice. Trading or investing in new and volatile assets like Bitcoin can be risky.
Join Bitcoin University Premium:
bitcoinuniversity.com/join
In this video, I discuss the Coldcard disaster in more detail, and show you how you can use Sparrow Wallet to temporarily hold your Bitcoin private keys while you look for another solution to replace Coldcard.
Not investment advice! Consult a financial advisor.
Watch this first:
youtube.com/watch?v=tOnQRVKxTqs
Were they using a pseudo-RNG?
github.com/Coldcard/micropython/blob/4107246f8a080807b62c3b4838e71e812ea68b6f/ports/stm32/rng.c#L64-L98
Good mobile wallets:
wallet.bullbitcoin.com/en
bluewallet.io
Sparrow Wallet:
sparrowwallet.com/download
My thoughts on NVK, founder of Coinkite/Coldcard:
https://x.com/mattkratter/status/2016282395260158134
https://x.com/search?q=from%3Amattkratter%20nvk&src=typed_query
The Best Hardware Wallet In Bitcoin (SeedSigner):
youtube.com/watch?v=TEnO2s1IJu4
seedsigner.com
NVK apologizes:
https://x.com/nvk/status/2083216713693151552
A possible victim:
https://x.com/migameegs/status/2083230223730987120
Self-custody is still the safest option:
https://x.com/leo_haf/status/2083228826474045487
I am not being paid or otherwise compensated by any company or cryptocurrency project that I mention in my videos. My opinion is not for sale. Please do not contact me with any affiliate or advertising deals.
#Bitcoin
#Coldcard
#hardwarewallet
Disclaimer
Neither Matthew Kratter's Bitcoin University, nor any of its directors, officers, shareholders, personnel, representatives, agents, or independent contractors (collectively, the “Operator Parties”) are licensed financial advisors, registered investment advisors, or registered broker-dealers. None of the Operator Parties are providing investment, financial, legal, or tax advice, and nothing in this video, on this YouTube channel, or at www.Trader.University or BitcoinUniversity.com (henceforth, “the Sites”) should be construed as such by you. This video, channel, and the Sites should be used as educational tools only and are not replacements for professional investment advice. Trading or investing in new and volatile assets like Bitcoin can be risky.
