Open-source professional network Icebreaker, co-founded by Coinbase and Google veterans Dan Stone and Jack Dillé, has secured $5 million in seed funding at a $21 million valuation to scale its team and build blockchain’s answer to LinkedIn.

CoinFund led the raise, with participation from Accomplice, Anagram and Legion Capital, among others, according to a statement on Wednesday. The project wants to become “the world’s first open professional network," founded on the belief that people’s digital identity shouldn’t be owned by a single entity like LinkedIn.

“One of the next significant use cases for crypto is to develop foundational social graphs for applications to leverage…We are proud to back Dan, Jack and their team in their mission to introduce true ownership of professional …