|Inclusive of all taxes|
Free express shipping to 110011 by 13-14 December
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Trusted security gadget store by the best
COLDCARD is the most trusted and secure Bitcoin Hardware Wallet.
Full-sized numeric keypad makes entering PIN easy and quick.
Bright, 128x64 pixel OLED screen. Shows all the critical details of your transactions.
Lovingly soldered in Toronto, Canada. Secure supply chain verified with: tamper-evident numbered bag, with bag number recorded into device.
Real crypto security chips. Your private key is stored in dedicated security chips, not the main micro's flash.
MicroSD card slot for backup and data storage. This allows truly offline signing, by transferring the unsigned/signed transactions on sneakernet.
The industry-standard for transmitting both data and power over a single cable.
Maximum security when when transferring data between devices
Secure & very short-range wireless transmission that sends data to your phone easily
MK4 can emulate a USB disk drive, so sending PSBT files can be a drag-n-drop.
You may define an optional "duress PIN code". If anyone enters that PIN code, instead of the "real" PIN code, nothing special is shown on the screen and everything operates as normal... However, the bitcoin key generated is not the main key. It is effectively a completely separate wallet!
This is a covert variation of the BRICK ME PIN mode. It forces a time delay (of minutes/hours/days) when logging into the Coldcard.
Coldcard supports BIP39 passphrases so you can also create an unlimited supply of distraction wallets. This feature is also useful for your own organization of funds or accounts. Unlike the single duress PIN, an unlimited number of related wallets can be created using BIP39.
Coldcard (MK4) uses Microchip's ATECC608A and Maxim's DS28C36B, to store the critical master secret: the 24-word seed phrase for your BIP39 wallet.
To resist Evil Maids, and other sneaky people with physical access to your Coldcard, we sign our firmware with a factory key. During boot-up, the firmware's signature, and nearly every byte of flash memory, will be verified and the appropriate Green/Red light set.
The PIN code on Coldcard is divided into two parts, such as 1234-5678. You first enter 1234 and then you will be shown two words on-screen. Those words are unique for all PIN prefixes, and for each Coldcard ever made.
Both secure elements and critical parts of the main micro are covered by epoxy at the factory. Our clear case is part of our security model too, so you can look and see if a "hardware implant" has been inserted inside your device.
No, Coinkite products are already custom cleared and in Etherbit's warehouses in India. Your order will be dispatched in 24 hours and delivered within 2-5 days with free express shipping. See our shipping policy.
Price shown on Etherbit.in includes everything. It is what you pay to buy Coldcard (MK4) and get it delivered to your doorstep. There are no hidden charges.
Etherbit is an official & authorised partner of Coinkite and Coinkite recommends buying from official partners. You can visit Coinkite's official website & verify Etherbit's identity: twitter.com/Seardsalmon/status/1717547388900913152
Etherbit is operating in India since 2017 and is trusted by your favourites: Polygon, Zebpay, WazirX, CoinSwitch Kuber, and more!
Should you have any queries, you can reach out to Coinkite via;
Price of Coldcard (MK4) is ₹18,999 including all taxes & free shipping.
Buy Coldcard (MK4) from Etherbit with free express shipping. Etherbit.in accepts payment via UPI, Google Pay, Amazon Pay, PhonePe, Credit Card, Debit Card, Net Banking, Paytm, MobiKwik, Freecharge, and Buy Now Pay Later.
Unit 376, 3219 Yonge Street, Toronto, Ontario, M4N 3S1, Canada
|Country of Origin|
Country of Origin
Etherbit Private Limited
A1-1205 Rudra Enclave, Althan-Bhimrad Canal Road, Bhimrad, Surat, Gujarat 395007, India