Business-to-stakeholder Blockchain startup Stratumn has raised €7 mln ($7.82 mln) in a joint venture with names including Nasdaq and Digital Currency Group (DCG).

Stratumn, which launched in 2015, says the Series A round represents the “largest” such investment closure in the European Blockchain space.

“Our new investors will enable Stratumn to continue and accelerate its development and more effectively address growing needs in our markets,” CEO and Co-Founder Richard Caetano said in a press release this week.

“We are especially happy with the continued and increased support from Otium Venture, who have accompanied us for a year, and excited to welcome CNP Assurances, Nasdaq and Digital Currency Group, who will help us reinforce Stratumn’s presence in the insurance and capital markets sectors.”

DCG head Barry Silbert gave special welcome to the startup, which he described as having joined the investor’s “family” of projects.

Silbert added:

“Stratumn’s Proof of Process Technology solves critical challenges around verifying and auditing the integrity of data used to make critical business decisions, and we look forward to helping the team build partnerships across our network of blockchain service providers and enterprises.”

DCG-owned Grayscale Investments’ Bitcoin exchange-traded GBTC, meanwhile, is now trading as if the price per coin were around $5,220.

As commentator Tuur Demeester noted on Friday, this represents an 85 percent premium over net asset value.