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

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-banks/ https://testyourgold.com/gold-plated-tungsten-in-russian-ban... https://decrypt.co/34033/chinese-firm-dumps-83-tonnes-of-fake-gold-on-the-market https://decrypt.co/34033/chinese-firm-dumps-83-tonnes-of-fak...