Bitcoin, Explained — The Technical Side of Bitcoin

Emergency broadcast: COLDCARD vulnerability

The COLDCARD hardware wallet has a critical vulnerability. If you are using the COLDCARD to store bitcoin, move them to a secure location as soon as you can. More information: https://blog.coinkite.com/coldcard-mk3-seed-...

2026-07-31

Episode notes

The COLDCARD hardware wallet has a critical vulnerability. If you are using the COLDCARD to store bitcoin, move them to a secure location as soon as you can.


More information:


https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/


https://blog.coinkite.com/entropy-technical-backgrounder/