To check the file was not truncated or damaged in transit. This command does a quick CRC32 check over the file. True SLC design with wear-leveling & block management, andĮnvironmentaly tested for bend, torque, salt spray, solar radiation, and We strongly recommend using real Industrial Grade MicroSD cards for backups:Īt least 2 cards and write 3 times to each card to mitigate future issues.
If there was already a backup file,Īnd number is appended to the filename. The new file is written the MicroSD card. Have made the quiz easier as it does not verify every word. You have to pass a quiz, proving you've written down the words, although we These words have nothing to do with your wallet seed and are chosen randomly. Coldcard will pick 12 words as a password. Use the encrypted backup feature for convenience and extra duplication. Of your 24 seed words, ideally on a SEEDPLATE. Treated as any other file because we use AES-256 encryption, with a strong pass phrase.Įven using this feature, you should still have a offline-only copy Settings and other meta is saved as well. The Coldcard is unique in that we offer a backup feature to save your wallet seeds HSM Mode and CKBunker Local Confirmation Codes User Management Spending Rules HSM Security Notes CLI Commands for HSM USB Protocol for HSM Mode MicroSD Card Related Recovery Cards Downloads Upgrade Firmware Settings Menu Address Explorer Advanced Menu Importing or Creating Private Keys Multisig Features Command Line Tools Downloads Version History Verifying Dice Roll Math Coldcard FAQ Paper Wallets Export Deterministic Entropy (BIP-85) Seed XOR Glossary Trouble Shooting Table of Contents Legal Buy Encrypted Backups Background
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