so yeah, the tutorial does have the answer at the end.
The solution here is written in base64:
MS4gbG92KDUpLCAKMi4gZigxKWxsIAozLiBsKDkpbig1KQo0LiByKDgpCjUuIGZyKDApCjYuIDEoOCk=
You can use this website to decode the answer, if the video is not enough. Thanks for playing!