A mysterious series of transfers allegedly using the Kraken exchange resulted in the loss of over $130 million from a European institution as of Tuesday (Nov. 3), according to an independent investigation of the blockchain transactions. The institution has not been identified, but the public blockchain record confirms that one operator was behind over a dozen withdrawals.

A day earlier, Monday (Nov. 2), Mercado Bitcoin, a digital asset company, suffered a hack, which caused a $40 million loss, PYMNTS reported, citing…