This project has been secretly taking shape over the last few months and is going forward quite nicely.
We are currently in the late stage of the development of our product. We will be probably able to start shipping sometime in June.
What is Coldkey ?It is a cold storage wallet card. Each Coldkey is denominated in crypto and comes with that amount loaded onto it's key.
Coldkey cards have several security features that makes them very difficult to counterfeit and tamper with.
Coldkeys cards are also collectibles. Each of them is serialized and authenticable in an unique way.
(an early working prototype)
Authenticable ?Under that black rectangle on the picture, there is a random string of character that is unique to each Coldkey. It is the AuthKey.
There will be two AuthKeys on each card. One that is printed in plain, and one that is hidden and made with UV.
You can easily check the association of the serial number and the AuthKey on our authentication tool :
https://auth.coldkey.euYou can try with these data:
Serial : BITCOINTALK-TEST-0
AuthKey : aZ42b321
This way you can verify if the Coldkey card you hold is authentic, and it becomes even more difficult to counterfeit a large amount of Coldkey serial numbers.
Difficult to tamper with ?Each private key is safely covered by a security hologram sticker.
This hologram is specially made for Coldkey. (Only early prototypes have a generic "SECURE" hologram used for testing)
The Coldkey card is then covered by a plastic layer that is pretty resistant. (> 5000 Taber cycles)
Some of the attack vectors against known collectible coins are not possible with Coldkeys.
The only way to redeem the card is by cutting right through it and peel the holo. The plastic film won't be an issue at that point.
It is equally cruel and cool to have to destroy the item to redeem it tho.
(Original pic uncompressed so you can try out the private key :
https://i.imgur.com/R4lPji5.jpg)
(Some UV swag
)
Pictures of prototypes shown at Coinfest UK :
(21 made and distributed during the convention)
We will be releasing loaded cards in batch on a regular basis, without limits in quantities, and occasionally some limited series as well.
Every important announcement regarding Coldkey will be made on this thread, which will also serve as a Reference thread.
Many things are probably missing here.
There is as well many surprises and improvements to come since the Coinfest prototypes.
Please visit our website for more informations : https://www.coldkey.euSpecial thanks to Polymerbit.They helped us a lot by designing the Coldkey logo and providing a background for our prototypes.
Foreshadowing great collaborations, we are open and looking forward to work with Polymerbit on joint projects in the future !
