Yes - It’s possible to update the metadata after the claim has been completed. Are you looking to update the tokens unique artworks or just a single artwork?
Awesome, thanks! That’s what I suspected but wanted to confirm.
Yes, I’ll be updating a single piece. So token my ERC-1155 token ID 0 will launch the claim with “placeholder” art, then when the claim is over, I’ll update that token 0 to be the actual art, and everyone will own the same piece.