I checked here:

https://textbrowser.github.io/dooble

and here:

https://github.com/textbrowser/dooble/blob/master/README.md

and I dont see any mention of Chromium, when Chromium (Blink) is powering the web browser. I do see Blink mentioned once, but I think this is an important detail to people who might be interested in the browser.