https://bitcointalk.org/index.php?topic=2504529.msg25839051#msg25839051The puzzle, that lead to the private key 8 was easy:
If you watched the video until the very end, you will hear a sound, which if you were able to reproduce the notation it will result in a 99 notes melody with 6 different notes. If you have turned this base6 code into base58check you got the private key. Pretty easy, huh?
Never heard somebody else doing this.