[Whistleblower]

Bugger. I wish I found this out earlier. Gotten is a past participle of get. So in a present perfect context, you could use gotten (I've gotten some fresh apples). However, this is American English. The verb in British English is get (infinitive), got (past simple), got (past participle). Nonetheless, as British English is more influenced internationally it is more common to hear gotten in certain circumstances, especially when something is received, earnt, gained or won ("Value friendship for what there is in it, not for what can be gotten out of it").

I hope this helps.