Coinkite: @OPENDIME, 1st &only Bitcoin bearer instrument. @COLDCARDwallet ultra-secure open hardware wallet. @theBLOCKCLOCK @BitcoinBackup est. block 141,000
developer preview
May 12, 2023
•
2 min read
If you are not a developer, you can ignore Edge version completely.
Feb 27, 2023
1 min read
MicroSD as 2FA, Import TAPSIGNER as main/ephemeral seed, Detached sig for exports, App-specific deriv paths, Import/Export overhaul, incl Samourai POST/PRE-MIX, Opt to save pw 4 next backup & more
Feb 9, 2023
Uncompromising Security & Convenience: Full QWERTY Keyboard, Dedicated Function Keys, and Unbeatable MicroSD Power
Jan 20, 2023
12 min read
On Breaking SHA256 FUD, Attack Surfaces of Computers, Bitcoin Binary Watch Bot, Quantum Computing & Multisig Grifters Attacks
Jan 16, 2023
14 min read
By Tristan Borges Solari (guest author)
Jan 13, 2023
11 min read
Multisig, Shamir Secret Sharing, Quorum Choices, Assisted Custody and How to Apply Diversity from a Security Mindset
Jan 6, 2023
18 min read
Protect Your Bitcoin from User Error: Expert Insights on Demystifying Passphrases and Avoiding Common Mistakes
Nov 23, 2022
For the next 72 hours only
May 27, 2022
MK4 reservations, NFC integration, P2TR support, gift cards, new European reseller & new team member
Jan 24, 2022
Our affordable contactless [NFC] Bitcoin smart-card initiative.
Jan 23, 2022
Excited to announce the Early Bird reservation of COLDCARD Mk4, get $40 off as many units as you’d like.
Dec 2, 2021
This is Coinkite’s Substack, a newsletter about BITCOIN SECURITY HARDWARE DON'T TRUST.
Sep 1, 2021
Enhancements
Jul 27, 2021
Apr 28, 2021
Seed XOR – Split your secret BIP-39 seed into 2 or more new seed phrases
Apr 6, 2021
New feature: “Countdown to Brick”
Mar 16, 2021
All New Code, Same Great Features
Feb 8, 2021
Security Fix (Multisig Users)
Jan 13, 2021
3 min read
Major Multisig Improvements!
Jan 7, 2021
Nov 23, 2020
The Aledged Problem
Aug 3, 2020
Major Performance Boosts!
![Announcing: Edge Firmware [developer preview] for CC Mk4](https://media.beehiiv.com/cdn-cgi/image/format=auto,width=720,fit=scale-down,onerror=redirect/uploads/asset/file/babd13f6-5cb7-4d9a-97d9-c26ccfa75519/f8943ab3-1d40-432d-825e-175d67271d79_926x1396.png)
