David A. Harding co-wrote the Bitcoin.org developer documentation in 2014 and 2015. In 2016, he created a section of Bitcoin.org dedicated to the Bitcoin Core project before joining the startup 21.co, where he wrote a series of Bitcoin developer tutorials. Since 2018 he has been co-writing a weekly newsletter for Bitcoin Optech. He joined Brink as a founding member of the board in 2020.