Aluminum Keychain with Bitcoin QR Address

Imagine that to get bitcoins you just need to get the keys from your pocket - and demonstrate a keychain with a QR code. This is precisely the idea that was born of the editor Ch00f, who did not limit himself to reflection, but turned a real keychain with a milling cutter for metal .

First of all, he generated a beautiful address for himself using the Vanitygen program . The program allows you to specify specific words that you want to include in the address. It can be your initials, last name or nickname. Ch00f introduced his last name. Choosing the right address took about six hours on the Radeon HD6970 graphics card, that is, only 0.5 trillion options, we can say that it was lucky.

When you have recorded and hidden the secret key, you can use any online QR-code generator to encode the address. After increasing the contrast in Photoshop, the author uploaded the image to the CamBam program , choosing a milling depth of 0.5 mm.





Ch00f inserted the aluminum billet into the grip of his CNC milling cutter - and launched the program.





Each furrow cutter passed ten times, removing 50 microns per pass.



Here's what the product looks like after two hours of milling.



Ch00f painted a can of black paint.



Then he removed the paint from the surface with sandpaper.



In the end, it remains only to drill a hole for the chain.