It's 2054

Bitcoin has failed

The gold bugs, led by @PeterSchiff, have convinced everyone that peer to peer exchanges of gold are the way to go

The world is now on a gold standard

You run a coffee shop

A customer walks in to buy a coffee but all they have is a 1 KG bar of gold

They take out their chisel and scale and carve off 0.054 grams of gold

You take the gold and send it to your gold purity specialist to confirm that the gold is pure

3-5 business days later, the test confirms that the gold is real

You call the customer back to your shop to get their coffee to complete the transaction