One pure silver Bitcoin 21,000,000 dog tag. This dog tag is made out of .999 silver and it’s 100% made by Satoshi Metals. Every dog tag starts as silver grain. The grain is then melted and poured into an ingot. This bar is then rolled into a sheet of silver with a metal roller. After that, we laser cut each dog tag out and sand them to perfection. After sanding they’re buffed and then finally laser etched with their design.