Lets say i find this post by DZFIRE https://e621.net/posts/2390387?q=dzfire
and i want to see the account that uploaded it.
Is there a way to do this?

On the left side of the image, down some ways under the tags, there's a History heading, under which is a Tags/Desc link. The user that uploaded it is listed at the bottom.

On the post, go down to History and choose Tags/Desc. You'll end up on the post's "Post Changes" page. Since posts require a certain minimum of tags in order to be posted, the bottom entry will be from the original uploader. In the case of your example, that's DZFire themselves.

clawstripe said:
On the post, go down to History and choose Tags/Desc. You'll end up on the post's "Post Changes" page. Since posts require a certain minimum of tags in order to be posted, the bottom entry will be from the original uploader. In the case of your example, that's DxFire themselves.

Thank you!