Description
The Coldcard MK4 is a new generation of Bitcoin hardware wallets from Coinkite, a respected brand in the global cypherpunk community. Designed with the philosophy of “Do one thing – and do it well”, Coldcard MK4 is fully optimized for privacy, security, and resilience against software-based threats or external tampering.
At BitcoinVN Shop, we provide brand-new, sealed Coldcard MK4 units, imported directly from Canada, ensuring security and authenticity.
Why choose Coldcard MK4 for Bitcoin storage?
Not multi-coin, extra security
Unlike multi-currency wallets, Coldcard MK4 supports Bitcoin only — eliminating vulnerabilities found in other blockchain protocols. The result is a minimalist yet extremely secure and specialized hardware environment.
Advanced hardware security
Built with the Secure Element ATECC608A, this chip is dedicated to securely storing your private keys, protecting your funds even in the event of physical theft.
- Duress PIN: Access a decoy wallet under coercion.
- Brick Me PIN: Permanently disable the device if forced to unlock.
- Anti-phishing Words: Detect cloned or tampered devices.
- NFC Tap: Secure, ultra-short-range wireless transmission to your mobile device with a simple tap.
- Virtual Disk Mode: Coldcard can emulate a USB drive, allowing you to transfer PSBT files via drag-and-drop.
Air-Gapped operation – No internet needed
Coldcard uses an air-gapped workflow, enabling you to complete transactions entirely offline. Signing is done via encrypted microSD cards, offering full immunity from malware, keyloggers, or network-based attacks.
Open source & auditable firmware
Coldcard MK4 is fully open-source, empowering the community to audit its code for integrity and transparency, earning the trust of privacy-conscious Bitcoiners worldwide.
Technical Specifications
| Specifications | |
| Type | Cold wallet (Bitcoin-only) |
| Secure chip | ATECC608A |
| Processor | Dual MCUs: STM32L5 (TrustZone®) + Secure Chip |
| Connectivity | USB-C, microSD card slot |
| Display | 128×64 monochrome OLED screen |
| Firmware | Open Source (GPLv3 License) |
| Special features | Duress PIN, Brick Me, Encrypted Backup, Anti-phishing |
| Interface | 12 physical buttons |
What’s Included in the Coldcard MK4 Package?
- 1 Coldcard MK4 Hardware Wallet
- 1 Anti-static, tamper-evident bag
- 1 Recovery seed card (24 words)
- 1 Quick start guide
Why Buy Coldcard MK4 from BitcoinVN Shop?
- 100% Genuine Product, sealed and imported directly from Coinkite (Canada).
- Includes 1-hour free technical consultation with Bitcoin cybersecurity experts.
- Fast shipping nationwide in Vietnam (2–5 days), high-security packaging.
- 7-day return policy for any manufacturer defects.
- Flexible payment options: cash or bank transfer.
- Check the item before payment.
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