Just wanted to share pics of this unique coin with the community, coin diameter is roughly 56mm for air-tite reference, that holo though, offers nice contrast and balance:

9 - Steeley

Thanks Krog!

I had a long discussion with my friend, Jabid, about physical Bitcoin. He compared them to wine, or art.

Wine can "go bad" with time and bad storage (light, temperature, humidity,...). Do you buy fine wines to drink, or to keep? What do you do if a bottle is "corked" ("bouchonnée" in french)?

Works of art can be counterfeited. The provenance and history of the works are very important and experts are sometimes needed to authenticate a painting.

In the future, the provenance of OG physical bitcoin (like Casascius, Lealana, BTCC,...) might become important, and perhaps experts like minerjones or elianite might be needed. I wouldn't buy a Casascius on ebay.

That said, following teegumes' thread, I print the keys on special paper that I order from Novalith in France, and I use pigmented ink. I dipped the keys in water with rust and after several months the qr codes were still readable.

But as Smoothie says: coins are not hack proof.

My 2 sats

P.S. In the future I will probably consider doing 2 pieces for the priv key (   Krogoth)...

Do you do a QR code with the priv key around it wrapped in a circle?

Awesome man thank you for this. I have to buy some paper from one of these that you’ve been testing for 2+ years. Do you have a preference? I’ve never used any of them so not sure which one I should get. Any recommendations would be appreciated! Thanks again for the time taken to do this test!

Unfunded

Having tried to help rxalts for a while last night we did find the correct font. But some were so indistinguishable as to make it quite complicated. There were parts even worse than shown above. This is why I would suggest revlar paper or similar. I have had a pk on revlar soaking for over a year and its still perfectly readable.

48  - Hotdog7