{"product_id":"bitcoin-merch-coldcard-bitcoin-hardware-wallet-mk4","title":"Bitcoin Merch® - Coldcard Bitcoin Hardware Wallet - Mk4","description":"\u003cp\u003eThe  Mk4 is a state-of-the-art, ultra-secure hardware wallet designed to keep your cryptocurrency safe. Featuring multiple advanced ways to connect, robust security measures, and a sleek, rugged design, the COLDCARD ensures that your crypto assets are protected from both online and physical threats. With its air-gapped operation, it never needs to touch a computer, and its advanced physical and digital security mechanisms make it a top choice for the security-conscious Bitcoin user.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMultiple Connection Options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB-C Connector:\u003c\/strong\u003e Industry-standard for transmitting both data and power through a single cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirGap SneakerNET:\u003c\/strong\u003e Maximum security for transferring data between devices without direct connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNFC Tap:\u003c\/strong\u003e Secure, short-range wireless transmission for easy data transfer to your phone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVirtual Disk Mode:\u003c\/strong\u003e COLDCARD emulates a USB disk drive, allowing simple drag-and-drop file transfers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSecurity Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine vs. Caution Lights:\u003c\/strong\u003e Resists physical attacks (e.g., \"Evil Maids\") with a secure firmware signature verified during boot-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Phishing Words:\u003c\/strong\u003e Two unique words displayed during PIN entry protect against trojan-horse attacks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Security:\u003c\/strong\u003e Clear case for visible tampering detection, enhanced PCB design for anti-probing, and no factory reset to ensure your secrets remain safe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged Protective Cover:\u003c\/strong\u003e Slide-on cover protects the screen and prevents hardware implant tampering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Secure Chips:\u003c\/strong\u003e Utilizes Microchip’s ATECC608 and Maxim’s DS28C36B secure elements for critical seed phrase storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAir Gap Operation:\u003c\/strong\u003e\u003cbr\u003eCOLDCARD works entirely offline, powered via USB power pack or AC adapter, including all setup, PIN selection, seed word generation, and transaction signing—ensuring full air-gap security.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUnique Seed Generation \u0026amp; Dice Roll:\u003c\/strong\u003e\u003cbr\u003eIf you don’t trust the built-in random number generator, you can generate a BIP39 seed phrase using a dice roll method. Up to 99 rolls are recommended, with full verification of the process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDisplay \u0026amp; Input:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright OLED Screen (3128x64 pixels):\u003c\/strong\u003e Clear, high-resolution display for ease of use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumeric Keypad:\u003c\/strong\u003e Simple, secure PIN entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSliding Cover:\u003c\/strong\u003e Protects the screen from damage and tampering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNFC Compatibility:\u003c\/strong\u003e\u003cbr\u003eThe COLDCARD Mk4 supports NFC-V, allowing tap-to-transmit all data types securely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurability \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleek \u0026amp; Rugged Build:\u003c\/strong\u003e Classic calculator-inspired sliding cover that adds protection while offering a compact, durable design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Factory Reset:\u003c\/strong\u003e Once your PIN is set, there is no way to reset it. Losing access to your PIN means losing access to your crypto, reinforcing the security of your device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bitcoin Merch","offers":[{"title":"COLDCARD Mk4","offer_id":57020385231174,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Pink Mk4","offer_id":57020385263942,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Blue Mk4","offer_id":57020385296710,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Orange Mk4","offer_id":57020385329478,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Green Mk4","offer_id":57020385362246,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Purple Mk4","offer_id":57020385395014,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Black Mk4","offer_id":57020385427782,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Red Mk4","offer_id":57020385460550,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Gold Mk4","offer_id":57020385493318,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true},{"title":"Glow-In-The-Dark Mk4","offer_id":57020385526086,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1014\/0824\/4038\/files\/ckcc4.png?v=1785113230","url":"https:\/\/metokin.com\/products\/bitcoin-merch-coldcard-bitcoin-hardware-wallet-mk4","provider":"Metokin","version":"1.0","type":"link"}