ShopApplies to: COLDCARD Q, Mk5, and Mk4
Verified on: August 15, 2026
Start with the instructions for the model in your hands. Do not enter a seed phrase from another wallet until you have checked the numbered tamper-evident bag, device, and first-boot security indicators.
COLDCARD Q
Use the Q setup guide for the keyboard, QR scanner, battery power, and Q-specific controls.
COLDCARD Mk5
Use the Mk5 setup guide for the compact keypad, MicroSD, NFC, and USB-C workflow.
COLDCARD Mk4
The official Quickstart covers bag inspection, power, PIN creation, and seed setup for the Mk series.
First-session checklist
Use the short checklist to verify a receive address, receive a small amount, sign once, and test recovery before relying on the wallet.
Before depositing an amount whose loss would be materially harmful to you, install and verify the current recommended firmware. Standard new-seed generation then combines fresh device entropy with one required method: 65 key presses with unpredictable timing, 50 physical dice rolls, or 128 physical coin flips. Dice Rolls Only remains a separate advanced workflow. After verifying the seed backup, use a strong, unique BIP-39 passphrase, back it up separately, record its wallet fingerprint, and test recovery before depositing funds. The savings security checklist covers the complete process.
Your seed words, PIN, passphrase, backup password, and private keys are secrets. Coinkite support does not need them. Never paste them into a website, support ticket, chat, phone, or computer.