[adrianmacneil]

I'm an engineer at Coinbase. There are definitely many non-US domains included (e.g. .ac.CCTLD and .edu.CCTLD).

[bendoernberg]

Why not publish the list? Surely it's not worth frustrating students from hundreds of colleges who try to take advantage of the offer and can't?

[icelancer]

Not publishing the list makes you look like you are harvesting email addresses. Just publish it.