Coldcard User Documentation
- Beginner's Guide to Coldcard Setup
- Official getting started with your new Coldcard guide
- Video Tutorials NEW
- How to upgrade the firmware
- Best Community Guides
User Guide Chapters
Quickstart! Start Here!
Guide For Bitcoin Beginners
Derivation Paths and "Accounts"
HSM Mode and CKBunker
MicroSD Card Related
Recovery Cards Downloads
Importing or Creating Private Keys
Command Line Tools
Verifying Dice Roll Math
Export Deterministic Entropy (BIP-85)
Table of Contents
Learn About Your New Coldcard
- Upgrade to the latest firmware.
- Hardware features including keypad and connectors.
- BIP-39 Encrypted seeds allows unlimited wallets.
- Use a D6 Dice to pick a random private key (or to change our pick).
- Understanding the settings on your Coldcard.
- Advanced Menu commands.
- Multisig features.
- How Encrypted Backups work on the Coldcard.
- How to install and use the command line (CLI) tools.
- Read the Frequently Asked Questions (FAQ) and Trouble-shooting tips and tricks.
- Wallet software download (ie. Electrum)
- Address Explorer
- HSM Mode and the CKBunker to permit automated signing and remote access.
- Your can view and download the source code on Github.
- Long and detailed discussion of PIN codes and the security element that holds the real secrets.
- Details of our encrypted backup files.
- Documented limitations, policy choices, and TODO items.
- Importing seed words into Electrum for funds recovery and other tips.
- How to use with Bitcoin Core.
- How developers can modify Coldcard to extend it.
- Memory map highlights.
- Size: 88 x 51 x 9 mm
- Weight: approximate 30 grams
- Power: 20 to 40mA
- Unofficial Volumetric 3D model [STP] by @TiKawamoto
Guides by the Community
- Bitcoin Core + Specter Desktop + Coldcard guide by Matt Odel
- Full Coldcard setup from beginning to end, the long way, incl. dice by EconoAlchemist
- Coldcard 101 by Bitcoin Q+A (Basic intro, Main features, How to set one up, Receive and send a transaction using Electrum, Create a backup, Adding a passphrase)
- Video: Specter Desktop with Coldcard
- Specter Desktop 101
- Video: Specter Desktop 2 of 4 multisig with Coldcard and Specter-DIY using Specter-Desktop
- Video: How to Use Specter Wallet for Bitcoin Multi Sig
- Video: Using the Coldcard (airgapped) with Electrum
- Video: How to use ColdCard with Electrum
- How to make offline transactions in Electrum with Coldcard wallet. | Spanish
- Video: How To Use Coldcard Wallet | Setup + Electrum Wallet
CLI & ckcc-protocol
COLDCORE Wallet (advanced)
- Video: Connecting Coldcard wallet to BTCPay Server
- Video: Coldcard wallet and BTCPay Server - PSBT Sending from a wallet airgapped
- Using BIP-85 on ColdCard to derive a fresh wallet & import it to Samourai. by EconoAlchemist
- My Top 10 ColdCard Features. by EconoAlchemist
- How to use an SD card of more than 32GB with Coldcard
- Video: Setting up ColdCard Mark2 Wallet Backup
- Video: Coldcard PIN Design and Operation
- Video: How to set up the different PINs of Cold Card Wallet
- Video: Secure Upgrade Firmware of ColdCard Mark 2
- Video: Unbagging the ColdCard Mark2
- Video: How To Use Coldcard Wallet | Import-Backup Wallets + Settings
- Videos em Portugues: Coldcard | Tutorial Completo
- Video: How to show your Coldcard balance on iPhone
- Protect your Bitcoin with an Electrum Multisig wallet, with Coldcard, Ledger, and Trezor
- End to End Coldcard setup by Bitcoin Citadel
- Video: Using Coldcard with Wasabi Wallet
- Video: TFTC Guides: Coldcard + Wasabi Wallet Basic Setup and Usage
Official Videos with KISB
- Set Nickname
- Setup Login Countdown
- Verify Firmware Signature
- Bitcoin Paper Wallet
- PIN features: Using PIN, Duress PIN, BrickMe PIN and Login Countdown
- Using Dice Rolls seed entropy
- Passphrase (BIP-39) features. Using it, Locking it down, and encrypted MicroSD.
- Encrypted backup. (MicroSD)
- Setup Coldcard with Electrum
- Signing a "simple" PSBT transaction from Electrum Air-Gap
- Setup Coldcard with Wasabi Wallet
- Using Address Explorer (QR and Export)
- How to Check Deposit Address & Verify Transactions with Coldcard USB and AirGap Address Explorer
- Setup Coldcard Air-Gap Multisig with Electrum
- Signing a PSBT Multisig transaction from Electrum Air-Gapped
- Backup Bitcoin Seed on SEEDPLATE metal backup.
- Migrate from Ledger or Trezor to Coldcard (ie Import Seed)
- COLDPOWER usb data protection for COLDCARD air-gap
- Fully Noded & Coldcard - Multisig
- How to use BIP-85 Child Seeds with Coldcard and other Bitcoin Wallets
- How to sign a message (text) with Coldcard keys and verify it!