Coinkite

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

Public Key

npub12ctjk5lhxp6sks8x83gpk9sx3hvk5fz70uz4ze6uplkfs9lwjmsq2rc5ky

NIP-05 Address

coinkite@primal.net

Profile Code

nprofile1qqs9v9et20mnqagtgrnrc5qmzcrgmkt2y3087p23vawqlmyczlhfdcqprdmhxue69uhkvet9v3ejumn0wd68ytnzv9hxgtmsd93hxqg7waehxw309ahx7um5wgh8xetvvckkget5v4ex66twv4jzuer9c822gk

Publishing to

feeds.nostr.band/pics

nostr.self-determined.de

purplepag.es

nostr.sixteensixtyone.com

relay.primal.net

nostr.wine

Author Public Key

npub12ctjk5lhxp6sks8x83gpk9sx3hvk5fz70uz4ze6uplkfs9lwjmsq2rc5ky

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Last Notes

2025-11-28 16:02:31 UTC

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Many colors are starting to run out, take advantage of our biggest sale of the year!
#nevent1q…6mv5

2025-11-18 14:48:19 UTC

Bitcoiners have been waiting for this.
Our #BitcoinBlackFriday sale is LIVE 🔥
🔸 25% off when paying with BTC
🔸 20% off when paying with fiat
🔸 $50 off BLOCKCLOCK Mini
While supplies last.
https://blossom.primal.net/be4885e52a0068e2badf9090c1fdd578673a1a8abc2db3b925d99152e013416d.jpg

2025-09-30 13:19:29 UTC

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We hope to keep you busy for a long time :)

2025-09-30 12:24:56 UTC

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🫂

2025-09-30 12:19:05 UTC

#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫
Read the complete release and upgrade here 📁 https://blog.coinkite.com/spending-policy
🔐 Single-Sig Spending Policies & 📱2FA!
You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist
We have also found a way to support **2FA authentication** using the usual phone apps (RFC 6238). If that's enabled, you will not be able to spend using your #COLDCARD unless you also have your phone and provide the correct #GoogleAuthenticator 6-digit numeric code.
Added file rename, Explorer is now offered for transactions of all sizes, NFC improvement, Added @BullBitcoin_, and many other fixes and improvements!
Watch the full video ▶️
https://www.youtube.com/watch?v=Qd8ymRwrokg
https://blossom.primal.net/8db8960ac03c0cb55dcc988e7096e2473c7cd598acacf1964655d3069fc35624.png

2025-04-08 13:10:00 UTC

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Still there if you wan to run your own fork

2025-04-08 12:58:47 UTC

The REEEE-Coupling SALE is on!
Something we don’t understand is happening with MaCrO and #Bitcoin weak hands are selling.
So we are giving 20% OFF all of our products to help you #HODL for them.
🥬🙌
https://store.coinkite.com/store

2024-12-23 14:14:57 UTC

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We do have giftcards :)

2024-11-05 17:30:27 UTC

Did you know #COLDCARD Q has a unique feature to store Secure Notes?
This feature allows you to add/manage new notes encrypted by your coldcard master secret.
Store those very important pieces of information and back it up with your Secure MicroSD Backup
Import and Export even by QR! 🪄
Learn more https://coldcard.com/docs/secure_notes/
https://m.primal.net/Ltfd.mov

2024-10-22 02:00:30 UTC

🌍
https://m.primal.net/LdwF.mov

2024-10-16 18:30:23 UTC

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 UTC

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 UTC

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

2024-09-28 11:29:38 UTC

Learn how to dispose your COLDCARD Q securely.
https://m.primal.net/LEZW.mov

2024-09-26 12:10:17 UTC

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People often have to recover funds from other wallets, help a friend, test wallets, read only wallets, etc...

2024-09-26 12:09:28 UTC

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What do you mean, I don't think I get it?

2024-09-25 13:58:59 UTC

🔒🌱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

2024-09-24 14:41:41 UTC

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Shipping. It's the whiter looking one.

2024-09-24 14:02:54 UTC

🌀
https://m.primal.net/LAZO.jpg

2024-09-23 20:36:37 UTC

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Case is welded shut

2024-09-23 14:45:32 UTC

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

2024-09-19 19:34:29 UTC

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 UTC

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

2024-09-14 00:44:01 UTC

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I think he prefers other places to put it.

2024-09-13 23:42:10 UTC

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

2024-09-13 22:11:39 UTC

Is this good or bad?
#note14h5…ztd5

2024-09-12 22:24:40 UTC

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Forgotten. We setup a new one. Then remembered we had that. Too late 😂

2024-09-12 21:52:16 UTC

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Just old forgotten one.

2024-09-12 21:07:20 UTC

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Yes, but could be tricky UX wise. Maybe on the EDGE firmware as it requires schnoor

2024-09-12 19:21:33 UTC

#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

2024-09-11 16:54:57 UTC

Learn how to add a nickname to your #COLDCARD
Most of our users have multiple coldcards, labeling devices can be very useful!
https://m.primal.net/Kmxd.mov

2024-09-08 23:38:27 UTC

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There are

2024-09-07 18:51:00 UTC

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 UTC

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

2024-09-03 20:44:06 UTC

🔒🔒🔒 #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 UTC

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2024-08-05 22:05:08 UTC

Hello! 👋