Bitcoin exchange bitFlyer has raised approximately 510m JPY ($4m) through third-party allotment, which entails issuing new shares to a limited number of investors.
Japan-based bitFlyer said it would use the latest funds to heighten security for its customers plus establish and maintain a solid management system.
The news follows the closure of a previous 130m JPY ($1.1m) funding round in January, led by Barry Silbert's Digital Currency Group, and brings the exchange's total funding to date to approximately $6.9m.
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