As title, does oraclize deal with the case where the query transaction and callback transaction are executed in different side chains?
I mean in this situation:
A-B
\
B'->C->D->....' canonical
Can such case happen that the query transaction are executed in block B while the callback transaction are in block B' ?
As the application developer, you need to handle this yourself. There's a little documentation here.
You send (and get returned) a queryId. You should check that this is valid inside your __callback() function when it is called.
You need to do this anyway, as the callback is public and can be called by anyone - so it could be an attack vector by a malicious party.
