Bitstack Secures $15 Million Funding for European Expansion and Product Innovation

French bitcoin savings app, Bitstack, has secured a $15 million Series A funding round led by 13books Capital. This investment includes participation from existing investors like YC, Serena, and Plug and Play. The funds will fuel Bitstack’s expansion into Europe and the enhancement of its products. A notable development is the planned launch of Stackback, a VISA debit card offering Bitcoin cashback in January 2026, aiming to solidify Bitstack’s position as a leading bitcoin savings platform across Europe.