Blockchain provides mining accountability

Whether it is a necklace from Tiffany & Co., an Apple iPhone or a pre-ordered Tesla Cybertruck, many buyers want to know that the metals going into the products they are purchasing are sourced ethically and sustainably.

Metals pass through many hands on their way from mine to consumer, which can make it hard to ensure the source of the minerals. This adds time and cost and origins tend to become c...