system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Batman dies and is seen dying by many in some big televised on-earth alien war thing. How does the Justice League recover the body, handle the funeral, and deal with the whole "Bruce Wayne is now also dead" thing?
gpt
Probably the same way his "death" was handled in the Dark Knight Rises. Funeral for Bruce, bury him at Wayne Manner, Gotham City constructs a giant statue of Batman as a memorial.

I highly doubt anyone is going to question the League if they walk in and say "we need the body."

As for the "Bruce Wayne" thing, they could make up many excuses. Died in the Alien War, disappeared on his yacht or private jet somewhere at sea, etc.