Azteco, a company based in Santa Monica, California, has raised $6 million in seed funding to develop its voucher system that allows consumers to save, spend, and send small amounts of bitcoin. The funding round was led by Jack Dorsey, with participation from several other venture capital firms and individuals.

Azteco's solution is aimed at the more than 2 billion people worldwide who have a smartphone but lack access to traditional financial services. The company plans to use the funds to expand its market in Latin America and Europe.