London-based Bitcoin wallet service provider and technology developer Blockchain has raised an extra $40 million in a Series B funding round, the company announced on Thursday.

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The round was led by Lakestar and GV (formerly Google Ventures) with additional participation from Nokota Management and Digital Currency Group. Blockchain’s $30 million A Round investors – Lightspeed Venture Partners, Mosaic Ventures, Prudence Holdings, Virgin, and Sir Richard Branson (Virgin Group) – also participated in the latest round.

Blockchain Chief Executive Officer and co-founder Peter Smith said: “Our Series B represents the most substantial investment in the fintech space since Brexit and is the largest Series B raised by any digital currency company to date. This brings our total capital raised to over $70 million and we’re thrilled to welcome some of the most well-respected investors in the world to the Blockchain family.

Our mission ‘to create an open, accessible, and fair financial future for billions across the globe, one piece of software at a time’ is a lofty one. This capital moves us one step closer to delivering on that mission and will ensure we can take a very long-term view.

As the market leader, you can expect us to make big, bold bets in research and development as well as further our expansion efforts globally. You can also expect new products aimed at allowing anyone to transact, save, or hedge digital assets with greater speed, efficiency and control.

Innovating, disrupting, revolutionizing a century old industry takes time. We’ve made significant strides, but we’re just getting started. Thank you for joining us on the very first part of our journey to the moon – rest assured we have the rocket fuel to get there!”