QED, a Bitcoin scaling protocol, has raised $6 million in a seed funding round from Blockchain Capital as the sole investor.

QED began raising funds for the round in March and closed it in April, founder Carter Feldman told The Block. The round was structured as a simple agreement for future equity (SAFE) plus token warrants, Feldman said, adding that it brought QED's valuation to "nine figures," meaning at least $100 million. He declined to provide a specific figure.

The seed round brings QED's total funding to $10.6 million. It previously raised $3.25 million in pre-seed funding from Arrington Capital, StarkWare, Draper Dragon and others, and $1.35 million in an angel round from Animoca Brands-supported Sparkle Ventures and others.

What is QED?

QED is a Bitcoin scaling protocol that …