Crypto custody firm Copper is in early talks about a public listing, according to three people with knowledge of the matter. Goldman Sachs, Citi and Deutsche Bank are among the investment banks potentially involved, according to one source. The decision on whether to pursue a listing will hinge on the company’s near-term revenue performance, a second person said, who spoke on condition of anonymity as the matter is private. "As standard practice, Copper regularly assesses a range of potential financing ...