Coinkite / Coinkite is on Nostr

Coinkite: OPENDIME, 1st & only #Bitcoin bearer instrument. COLDCARD ultra-secure open hardware wallet. BLOCKCLOCK. TAPSIGNER. And more! est. block 141,000

Last Notes

2024-10-16 18:30:23

Happy to announce the new @npub1spr…8s72 #HereComesBitcoin collaboration.
All profits from this Grumpy Surfer #SATSCARD sales will be donated to #Bitcoin Education.
https://store.coinkite.com/store/sc-hcb-1

2024-10-16 11:07:22

Good morning! Did you know COLDCARD invented an easy and safe way to help prevent evil-maid and tampering attacks?
We call it anti-phishing words, learn more here.
https://m.primal.net/LXXN.mov

2024-10-07 12:43:12

Good morning!
🔒#COLDCARD Ultra Easy Guide; The 5 minutes setup.
Are you just starting out? Need a quick and uncomplicated way to get going with your COLDCARD?
This video shows you the fastest and most simple way to get setup!
https://m.primal.net/LNmM.mov

2024-09-25 13:58:59

🔒🌱Learn more about #COLDCARD's unique seed management tools.
There is no other hardware wallet like it!
With Seed Vault & Temporary Seeds (read-only) you can make your setup as simple or as complex to match your needs.
Load temporary seeds to sign, choose to store them, store pass-phrases or even SeedXOR parts for later combine.
https://m.primal.net/LBqp.mov

2024-09-23 14:45:32

GM COLDCARD Q colors 🔥
Shipping today!
https://m.primal.net/KzLG.mov

2024-09-19 19:34:29

Learn how to navigate COLDCARD's unique Trick PINs system.
Duress PIN, Lockout Timer PIN, Brick Me PIN, Look Blank PIN, Just Reboot PIN, Delta Mode PIN, Silent Wipe, and much much more!
https://coldcard.com/docs/trick-pins/
https://m.primal.net/KvCR.mp4

2024-09-19 10:05:41

GM Here Comes Bitcoin 😤
https://m.primal.net/KuhM.jpg

2024-09-13 23:42:10

What is your favorite color?
https://m.primal.net/KpIX.jpg

2024-09-12 19:21:33

#COLDCARD Firmware Upgrade!
## SeedXOR
🌳XOR from Seed Vault (select other parts of the XOR from seeds in the vault). Restore geographically distributed SeedXOR without physically bringing the parts together
📸Seed XOR seeds can be scanned f/ SeedQR instead of typing them by hand
## Multisig
🔐Option for unsorted multisig [multi(…)]
📝JSON wrapped imports to provide custom `name` instead of the filename. Most useful for USB and NFC imports which have no filename
🔬Descriptor checksum is no longer required upon import
⛓️‍💥Create Airgapped (aka using CC as multisig coordinator) now works with BBQRs
## QR File Share
📁Same as NFC file share, allows user to share any file from SD card via QR/BBQr
## Optimizations and speed
🍄 #libsecp256k1 bumped to latest 0.5.0 (point multiplication algorithm speed up, etc)
🐇⚡️improvements in our signature grinding algo. Updated libsecp plus our optimizations yield 30% improvement in signing speed over previous version (15% in overall signing speed as signing is not the only part of it (validation, change checks, etc.))
## Security
🧐Improve side-channel protection: libsecp256k1 context randomization now happens before each signing session
And much more! Details here https://blog.coinkite.com/5.4.0-released/
https://m.primal.net/Knzw.jpg

2024-09-08 23:38:27

- reply

There are

2024-09-07 18:51:00

Learn how to use #COLDCARD Q's covert calculator mode!
Learn more at coldcard.com
https://m.primal.net/KiXh.mov

2024-09-06 19:56:02

Tapscript is happening
https://m.primal.net/KhIg.jpg

2024-09-03 20:44:06

🔒🔒🔒 #COLDCARD team takes minimizing supplier trust to the extreme!
We use 2️⃣ different vendors for secure elements, and the COLDCARD architecture requires
3️⃣ different chips to be broken in order to access the seed. 🔒🔒🔒
Learn more here https://blog.coinkite.com/understanding-mk4-security-model/
https://m.primal.net/Kcmt.jpg

2024-08-05 22:23:59

- reply

2024-08-05 22:05:08

Hello! 👋