Bitcoin Forum

Yes...I am still in a good mood so giving out a BITCOIN PHYSICAL coin.  :D  

First come first served. Free shipping anywhere on this planet with the exception of certain countries>> read here https://bitcointalk.org/index.php?topic=3910520.0

If you live in any country I cannot ship to you can always ship to a friend in other countries that Ic an ship to

Only one spot per person.

If you win you get to choose one coin of your liking.

Please read>>>> https://bitcointalk.org/index.php?topic=3910520.0

ONLY ONE RULE>> PICK A LETTER OR NUMBER NO RANDOMS PLEASE..sorry randoms will be ignored

1
2 -
3 –
4 -  
5 -
6 -
7 -  
8
9 -
0 -andulolika ;D
a -
BTC -
c -
d
e -
f -

This coin will be shipped directly from manufacturer. A random coin will be picked as some of these manufacturers do not send to some countries.

Please provide full address with zipcode. Other than that It will not be shipped properly. If you can also add telephone… if not I will make one up and place instead.


Please no PO boxes as they do not ship to PO BOX addresses.

Goodluck!  Please read https://bitcointalk.org/index.php?topic=3910520.0

I also suggest using  privnote.com top send me your addy via PM once raffle winner get in touch with me.

Its for your privacy.  ;)  

For all newcomers you have to read https://bitcointalk.org/index.php?topic=3910520.0

You have to reach out to me when winning. Coins will be bought and sent from manufacturer.

If coin is stolen or does not arrive because of thievery in the postal system I am not sending a new one.

Also sometimes if they are sold out from a particular coin of your choice, another will be sent instead.

Read all of this and then decide if you want in or not. I am not responsible for any failed deliveries.

You are not buying anything here.

 I am sending out of the goodness of my heart and that's it.   :D

This applied to all auctions in the past and future ones as well as the thread says. Goodluck!

DO NOT SEND ME A PM WITH PRIV NOTE... UNLESS YOU WIN THE RAFFLE.

If you win yes...if not no! And please send within 24hrs so I can keep track on who won what. Thanks   :D

PLEASE PLACE YOUR INFO AS FOLLOWS WHEN PLACING YOUR LETTER OR NUMBER

A KROGOTHMANHATTAN

It makes my life easier to copy and paste

And it keeps me in a good mood too! :D

Just a reminder for everyone past,present and future....

   a) I do this for fun. I am not compensated by anyone and there is no angle in this for me.

   b) I do not hodl onto any addresses they are destroyed each time I place an order.... any repeat winner has to resubmit their addresses.

   c) Pass on the good deeds to others and enjoy  ;)

Information threads made by
 KrogothManhattan (https://bitcointalk.org/index.php?action=profile;u=1000199)

฿ (https://bitcointalk.org/index.php?action=profile;u=1000199)
BitBills (https://bitcointalk.org/index.php?topic=3334918.0)
Physical Bitcoin Creed (https://bitcointalk.org/index.php?topic=3440405.0)
Crypto Stamp Website (http://crypto-stamps.com/)
Bitcoin Postage Stamps (https://bitcointalk.org/index.php?topic=2097158.msg20957878#msg20957878)
Beware of Fake Casascius coins  (https://bitcointalk.org/index.php?topic=3257048)
MTGox yubi and MTGox OTP card (https://bitcointalk.org/index.php?topic=3557001.msg36379680#msg36379680)
Breached or Scam coin makers list (https://bitcointalk.org/index.php?topic=3315347.0)
Help me name my new custom Bitcoin painting  (https://bitcointalk.org/index.php?topic=5147522.0)
Private issue custom made Coldkey krogoth cards (https://bitcointalk.org/index.php?topic=5222198.0)
 Past Collectable Auction or selling prices with links  (https://bitcointalk.org/index.php?topic=5130318.0)
Stamps go digital-Collectable Blockchain postage stamp  (https://bitcointalk.org/index.php?topic=5153959.0)
Free Daily Raffle Rules and posting of received free coins (https://bitcointalk.org/index.php?topic=3910520.0)
 Unique, Rare and All Crypto Collectable Posting Thread with LINKS  (https://bitcointalk.org/index.php?topic=5107629.0)
How to Generate a signed BTC transaction using Electrum and Trezor (https://bitcointalk.org/index.php?topic=5106013.0)
Collecting Community input needed>> Definitions used in our unique hobby  (https://bitcointalk.org/index.php?topic=5134233.0)
¯\_(ツ)_/¯

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.

https://i.imgur.com/BJy5b1l.jpg?1
(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.eu
You 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.