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Coinkite
Coinkite
Coinkite
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BITCOIN SECURITY HARDWARE
DON'T TRUST. VERIFY.

coinkite.com
Tutorial: Multisig (Desktop)
6:52
Месяц назад
Tutorial: Applying a Passphrase
3:21
Месяц назад
Tutorial: NFC push txn
2:43
2 месяца назад
Bitcoin Basics with HodlDee
33:13
2 месяца назад
How to Clone/Migrate from Mk4 to COLDCARD Q
1:54
5 месяцев назад
COLDCARD Q Preview
1:12
7 месяцев назад
SATSLINK Presentation - Nostrasia 2023
9:55
9 месяцев назад
COLDCARD Q1 Sneak Peak
0:55
Год назад
Coinkite Security Bag Guide
1:52
Год назад
Sign text message over NFC
1:07
Год назад
Show address via NFC
1:20
Год назад
BLOCKCLOCK Micro Tips & Tricks
1:20
Год назад
BIP-85 Password COLDCARD demo
5:23
2 года назад
Seed XOR (seedXOR.com) & COLDCARD
6:23
2 года назад
Bitcoin Security Guide
18:14
3 года назад
Комментарии
@martinlutherkingjr.5582
@martinlutherkingjr.5582 9 дней назад
Sparrow or specter desktop?
@martinlutherkingjr.5582
@martinlutherkingjr.5582 11 дней назад
Nunchuk inheritance feature is garbage
@Varias_Variaveis
@Varias_Variaveis 17 дней назад
Good video but one question remained. Is the passphrase entered in the "edit passphrase" field not compatible with BIP 39? I say this because the words I would insert are not among the 2048 (beep 39 world list). Would that be it? Thanks
@Principlesof98
@Principlesof98 20 дней назад
When I try to sweep the funds using the NFC function on my Numchuck wallet I get a page that says “Checking Funds. Please Wait.” But it lasts forever and I have never been able to proceed with my transaction.
@Principlesof98
@Principlesof98 20 дней назад
I try to sweep the funds using my Nunchuck wallet to send them to a different wallet but the “sweep Funds” button is always grayed out and I cannot proceed. So what good is this card? I am very disappointed.
@DouglasPorter
@DouglasPorter 25 дней назад
Can this be done using two Q's and one MK4?
@UTXGeaux
@UTXGeaux 27 дней назад
Awesome feature - avoiding the second microSD insert for broadcasting is convenient.
@tuxbuttocks8973
@tuxbuttocks8973 Месяц назад
All this microSD card swapping making me nauseous. This needs to be feasible via QR code ONLY where you can independently verify the the exact information being transferred between the devices. There's no way to verify all three devices don't have a copy of the other devices private keys. You've NAILED transferring large files over QR with your splitting/batching of QR codes, so you should be able to make this completely airgapped very easily. Please make the final small step!
@tuxbuttocks8973
@tuxbuttocks8973 Месяц назад
After my above comment, I see you are using the QR codes to share the descriptor rather than transferring it via microSD. This is good, but I'll have to experiment again to see if it's possible to transfer the XPUB from the initial two coldcards to the third for generating the wallet. I believe I've run into problems trying this before, but I'll gladly give it a try again. I believe the error I received when importing an XPUB was something like "Received text/json file. This is all I can do with this file" and no ability to save the data.
@mrprfct7069
@mrprfct7069 Месяц назад
Would be nice if you honored the Q presale purchase of $199 instead charging those who paid up front the extra $20. Not very good customer service.
@leleco0568
@leleco0568 Месяц назад
I bought this piece of shit and it's simply useless, the NFC doesn't work and the transactions don't complete, it gives an error and doesn't go. Bad advice, I ended up with a very expensive paperweight
@hindustan91
@hindustan91 Месяц назад
Question : Coldcard Q and Q1 is same?
@kalan91
@kalan91 Месяц назад
Does wallet password (at 3:03) work like passphrase in Ledger, or hidden wallet in Trezor functionality? So that even if your seed words get compromised, you still need that extra password to recover the wallet?
@daanl8993
@daanl8993 Месяц назад
Service like this is wonderful, thanks a lot!
@kiruthikskk
@kiruthikskk Месяц назад
If I store more bitcoin size od storage decrease??? That means we need more storage size to store btc ?
@OPIXdotWORLD
@OPIXdotWORLD Месяц назад
COLDCARD ... yes
@BobE_Nagesh
@BobE_Nagesh Месяц назад
Excellent demonstration. Thanks
@Wealthsquad-zq2nj
@Wealthsquad-zq2nj Месяц назад
What a joke
@SETUPSYSTEMResource
@SETUPSYSTEMResource Месяц назад
🎉
@mentaloveyt
@mentaloveyt Месяц назад
So. What does passphrase do ?
@daanl8993
@daanl8993 Месяц назад
0:17
@Leeds1919LUFC
@Leeds1919LUFC 2 месяца назад
When you set a duress pin, in the backend does it create a ‘’passphrase’’ in order for it to create a new wallet for that duress pin? Just interested to know the back end functionality
@pythone.g.account5355
@pythone.g.account5355 2 месяца назад
what phone is that?
@HEMANTHKumar.p-hi5rn
@HEMANTHKumar.p-hi5rn 2 месяца назад
What if the calculator broken😂
@ducati588
@ducati588 2 месяца назад
no such word as "broadcasted" the word you were looking for is 'broadcast'. Cheers
@KyleLackinger
@KyleLackinger 2 месяца назад
Can you broadcast from your own node with this feature? 0:32
@jamesbell9627
@jamesbell9627 2 месяца назад
Wow, is Sparrow necessary, or could you use something else? Nothing against Sparrow.
@myceliumtechno
@myceliumtechno 2 месяца назад
you can use any wallet capable of exporting transactions (or partially signed bitcoin transactions). For example Blue wallet on mobile.
@recongraves
@recongraves Месяц назад
​@@myceliumtechnothx you
@MoneyMcCombs
@MoneyMcCombs 2 месяца назад
First 😊
@ryanchinh1040
@ryanchinh1040 2 месяца назад
Coldcard software look outdated. It's look like 2005.
@Ron_css
@Ron_css 3 месяца назад
BTC = 🚀
@theclayj
@theclayj 3 месяца назад
You need to update your documentation for verifying on mac. On step 5 of verifying pgp signature you do not mention to add the directory location in the "gpg --verify signatures.txt". instruction. Can you see how this is very confusing because people will just think they need to to "gpg --verify signatures.txt" and not the location... You only mention it in this video. Which I am sure is confusing a lot of people at that step if they are only referring to the documentation and not this video.
@martinlutherkingjr.5582
@martinlutherkingjr.5582 3 месяца назад
Can you see the constructed seed that comes from combining the 2 so you can input the combined seed into a device that doesn’t support seed xor?
@fqras
@fqras 3 месяца назад
Don’t forget to destroy the ledger
@hal7703
@hal7703 3 месяца назад
I helped both my mom and dad set up theirs up. At 2:43, I’ve run into the same problem with both of them. Coldcard is plugged into computer and my screen looks like the video. When I click scan, it says ‘no hardware wallets found.’ If you want everyday users to adopt your product, you need to make it more user-friendly.
@PaulY.-dt7kv
@PaulY.-dt7kv 3 месяца назад
3 minutes and 45 seconds of non-stop demonstration by the narrator. I am waiting for Bitcoin wallet tasks to become less than 5 seconds. People in cities get angry over rurals and suburbians not having their card taken out of wallet and have it ready in their hands before even reaching cash register to cut the task duration down to under 3 seconds.
@mrj9881
@mrj9881 3 месяца назад
Dont buy from them...I cancelled an order 1hr and 20 minutes after it was placed...and they never responded to me until after they decided to ship the items....who does that??
@mrj9881
@mrj9881 3 месяца назад
Dont buy from them...I cancelled an order 1hr and 20 minutes after it was placed...and they never responded to me until after they decided to ship the items....who does that??
@TOMinPDX
@TOMinPDX 2 месяца назад
So what you are saying is don't cancel with them. You would have been fine if you had received and used your Coinkite products I assume.
@v3ng4r65
@v3ng4r65 3 месяца назад
Tutorial for Windows?
@equinoxobject
@equinoxobject 4 месяца назад
Please make a version with direct Ethernet connection rather than Why-Fry
@cbrunnkvist
@cbrunnkvist 4 месяца назад
"it's built like a gameboy" - tell me you're a kluless Gen Z potato without saying it
@pmf026
@pmf026 4 месяца назад
Guys, please help.. bitcoin core won't compile anymore on debian bullseye (kernel 5.10.0-28-amd64) what the actual fudge?! why?! Any help appreciated these are the errors I'm getting during make job ------- util/time.cpp: In function ‘std::string FormatISO8601DateTime(int64_t)’: util/time.cpp:50:24: error: ‘year_month_day’ in namespace ‘std::chrono’ does not name a type 50 | const std::chrono::year_month_day ymd{days}; | ^~~~~~~~~~~~~~ util/time.cpp:51:24: error: ‘hh_mm_ss’ in namespace ‘std::chrono’ does not name a type 51 | const std::chrono::hh_mm_ss hms{secs - days}; | ^~~~~~~~ util/time.cpp:52:63: error: ‘ymd’ was not declared in this scope 52 | return strprintf("%04i-%02u-%02uT%02i:%02i:%02iZ", signed{ymd.year()}, unsigned{ymd.month()}, unsigned{ymd.day()}, hms.hours().count(), hms.minutes().count(), hms.seconds().count()); | ^~~ util/time.cpp:52:120: error: ‘hms’ was not declared in this scope 52 | return strprintf("%04i-%02u-%02uT%02i:%02i:%02iZ", signed{ymd.year()}, unsigned{ymd.month()}, unsigned{ymd.day()}, hms.hours().count(), hms.minutes().count(), hms.seconds().count()); | ^~~ util/time.cpp: In function ‘std::string FormatISO8601Date(int64_t)’: util/time.cpp:59:24: error: ‘year_month_day’ in namespace ‘std::chrono’ does not name a type 59 | const std::chrono::year_month_day ymd{days}; | ^~~~~~~~~~~~~~ util/time.cpp:60:47: error: ‘ymd’ was not declared in this scope 60 | return strprintf("%04i-%02u-%02u", signed{ymd.year()}, unsigned{ymd.month()}, unsigned{ymd.day()}); | ^~~ make[2]: *** [Makefile:11748: util/libbitcoin_util_a-time.o] Error 1
@bush-b5330
@bush-b5330 4 месяца назад
A piece of cake😂😂
@flaviaoliveira547
@flaviaoliveira547 4 месяца назад
And Windows???
@augmentos
@augmentos 4 месяца назад
TERRIBLE VIDEO
@Chris-zu4es
@Chris-zu4es 4 месяца назад
yes keep the tab outside of the bag or someone can just buy a new bag snd do the same thing
@paralellosll3849
@paralellosll3849 4 месяца назад
So none of the bitcoin are stored on the ColdCard Mk4, they are stored on the Sparrow Wallet?
@Duke-511
@Duke-511 4 месяца назад
Bitcoin is always on the Bitcoin network. Your hardware wallet securely holds your 12 or 24 seed words that gives you control over your Bitcoin on the network. The hardware wallets also will sign transactions using those seed words.
@rufuspipemos
@rufuspipemos 4 месяца назад
OMFG... it can't be that easy!!!!!
@rufuspipemos
@rufuspipemos 4 месяца назад
$300 for this would be worth it.
@kkrott87
@kkrott87 4 месяца назад
Hey guys, I found the vid pretty easy to follow. I did the gpg verification on ubuntu... thanks
@JohnMSel
@JohnMSel 4 месяца назад
One small amendment (perhaps due to more recent firmware?). When going to the 'Source' Coldcard and then 'Advanced' there is an extra step, 'Backup', to be clicked on. Then you can access the "Clone Coldcard" prompt.
@rweisbein1
@rweisbein1 5 месяцев назад
Confused. At 2:10, "tap the wallet we just created". Looks like a key was tapped, not a wallet.
@Sunzu60
@Sunzu60 5 месяцев назад
This is a terrible way to help someone. It's moving too fast and the resolution is crap. This makes the company look like complete amateurs