Online or physical lottery tickets?

I just did a quick search on bc.game lottery article and nothing was written on the duration at which a lottery ticket that wins will expires or would become invalid for claim.

In my opinion, a user should be able to claim his/her reward anytime they Wish to, because I see no reason as to why they'll render the ticket invalid after sometime. If we were referring to a physical lottery ticket I would have judge that different but since I'm referring to an online casino then it shouldn't have any maximum duration at which it will be valid.