Here is the original video, in which they did not reverse the current:

https://www.youtube.com/watch?v=8cjNouFqUHs

This left open the speculation that they simply created an electromagnet, stabilised by the wire.

They can refute this speculation by filming reversing the current, which they have promised to do:

https://gall.dcinside.com/mgallery/board/view?id=sigularity_point&no=91892

Resolves YES if such a video is uploaded by 26/06/2024 (SCTL said they would try to upload it quite soon), in which the sample still levitates after the current is reversed.