[bufferoverflow]

It's not a solved problem. Notice how you didn't actually answer the question of how a random store will authenticate your gold shavings.

Even banks and large jewelers fail to authenticate gold.

https://testyourgold.com/gold-plated-tungsten-in-russian-ban...

https://decrypt.co/34033/chinese-firm-dumps-83-tonnes-of-fak...

[InfiniteTitan]

Simply incredible. Used for millennia as currency but not a solved problem to determine what is gold…