5 ms·
The coolest solution I've read about to note the producer is to emboss a hologram in the metal, though perhaps with enough care this too could be faked or copie
by tomkinstinch 7y ago
The coolest solution I've read about to note the producer is to emboss a hologram in the metal, though perhaps with enough care this too could be faked or copied:
https://en.m.wikipedia.org/wiki/Kinebar https://en.m.wikipedia.org/wiki/Kinebar
- ryanmercer 7y agoThere are other methods like this, Sunshine Minting for example has a 'decoding lens' for their products that contain the 'MintMark SI security feature'. http://www.sunshinemint.com/TechnologyEnhancements.aspx http://www.sunshinemint.com/TechnologyEnhancements.aspx --- Geiger Edelmetalle , on their Geiger branded stuff, uses a a UV safety coating but it will rub off with enough handling (which is why many of us do not remove the shrink wrap they put on their bars), they also individually assign serial numbers that can be tracked online for gold and silver bars starting at 1 gram https://www.geiger-edelmetalle.de/en/about-geiger/news/geiger-original-new-product-series https://www.geiger-edelmetalle.de/en/about-geiger/news/geige...
- lixtra 7y agoThe coolest solution I heard was to look at a well defined spot of the gold bar and register the impurities/bubbles/structure that naturally happen while casting. This is very difficult to reproduce (because there is no legitimate need to do so) and is already present. Edit: And of course put the info on block chain.