Coldcard

Coldcard is a Bitcoin hardware wallet brand that provides some of the most secure and trusted solutions for managing cryptocurrency assets. Specializing in Bitcoin, Coldcard is known for its dedicated focus on security and verifiability, making it a standout choice for Bitcoin enthusiasts seeking robust protection for their digital holdings.

Why do users trust Coldcard for securing their crypto assets?

Users place their trust in Coldcard due to its stringent security measures and specialized design. The Coldcard Mk4 wallet features an air-gapped design, which ensures that the device never has to be connected to a computer throughout its lifecycle. This air-gapped operation is complemented by the use of dual secure elements, including Microchip's ATECC608 and Maxim's DS28C36B chips, which safeguard the critical master secret, such as the 24-word seed phrase. Furthermore, the firmware is signed with a factory key, and during boot-up, the firmware's signature is verified to resist unauthorized tampering. This comprehensive security framework offers users peace of mind, knowing their Bitcoin assets are well-protected.

Key features of Coldcard

• Air-gapped Design: Entirely avoids computer connections, enhancing security.
• Dual Secure Elements: Utilizes two independent secure elements for key storage.
• NFC Connectivity: Allows for secure and convenient communication with mobile devices.
• PIN Safety Systems: Includes duress and "Brick Me" PINs for additional security layers.
• PSBT Support: Native use of Partially Signed Bitcoin Transactions for enhanced compatibility.
• QR Code Scanner: Advanced algorithms and LED illumination for accurate scanning.

Highlights about the origin and history of Coldcard

Coldcard was developed by Coinkite Inc., a company known for innovation in the Bitcoin space. Over the years, Coldcard has evolved to become a vital tool for Bitcoin users who prioritize security and privacy. With each iteration, it has introduced new features and enhancements, consistently setting the benchmark for hardware wallet security. Today, Coldcard enjoys a reputation as one of the most secure Bitcoin signing devices available, trusted by users worldwide.