Ledger, the maker of hardware cryptocurrency wallets, has raised $75 million in Series B funding. : Ledger, the France-based maker of hardware cryptocurrency wallets, has raised $75 million in Series B funding. According to an announcement today, the new round was led by the U.K.-headquartered investor Draper Esprit, and also included Draper Venture Network, FirstMark Capital, Cathay Innovation, and Korelya Capital. Existing investors such as CapHorn Invest, GDTRE and Digital Currency Group also participated in the round. Ledger said it plans to use the new cash primarily to scale its business amid the growth in the popularity of cryptocurrencies.