Onramp handles forks case by case, under section 14.12 of our Terms of Service, the Bitcoin Network Fork Policy. If a fork, network split, or airdrop creates a new asset, Onramp decides how to respond, and it has no obligation to provide access to or value from the new asset.
Because every fork is different, we don't make commitments ahead of time. If one happens, we'll assess it and share our approach with clients.