[TorontoCFE]

If you don't have a permanent home in the US (as a student I assume no), then you would be considered a non-resident alien under the Canada-US tax treaty.

This means that you would only be liable to US tax on income you get from a US source or that is connected to a trade or business in the US.

Poker would not meet those criteria so any tax would come from Canadian tax liability. If the poker earnings don't qualify as a business, then they are tax exempt.

You don't need to hide your identity and play under someone else's name and risk other consequences.