Part 2/7:
At the core of this discussion is the Coldcard, a hardware device designed for secure Bitcoin signing. This device allows users to approve transactions offline, safeguarding private keys against online threats. Its sleek design and reliability have made it a daily driver for many Bitcoin enthusiasts, including Ben himself. The Coldcard's primary appeal lies in its ability to keep keys secure while still enabling convenient transaction signing—a critical feature in the realm of Bitcoin security.