I've never had my corys lay eggs in my tank, but I do have nerite eggs ALL the time and those don't look like nerite eggs. It's hard to determine the size with the magnified picture, but the color doesn't seem right for nerite eggs. Mine are always bright white and look like tiny pieces of rice.
Unless there is algae covering them? The shape looks like nerites.
I have not kept Nerites but have had corys, however I would also say it's the Nerites' too.
Corydoras are known to be quite tricky to breed and they need quite specific conditions so it's most likely the Nerites who (correct me if I'm wrong) have a reputation for laying heaps of eggs all around the tank that mostly are not fertilised nor ever hatch.