“We have seen revenue and client growth tripling in the course of around the quarter, and meeting that demand has created some challenges, but in a good way,” said Copper CEO Dmitry Tokarev in an interview. “We are involved in a lot of conversations with financial institutions, with something like 84 NDAs [non-disclosure agreements] in place.”

https://www.coindesk.com/crypto-custodian-copper-raises-50m-in-series-b-round