Coinbase Web Developer interview questions

A phone screen with a recruiter, followed by a live video coding session. The phone screen was fine. The video session didn't go as well, partially due to fatigue on my part - it was scheduled at the end of a very long day - and partially, in my impression, due to the interviewer being fairly rigid about accepting answers to the questions. I attempted a solution, ran out of time, and even though I was able to email in a finished and accurate solution less than an hour after the video screening . . . that didn't cut it for them.