What is a vinylkey Registration Key?

The registration key is inside of the vinylkey album when you purchased it. It is hidden on the inside of one of those annoying forms where you have to tear off the the edges. Once in there, you will see a very long number. This is the special magic number that you provide to have the vinylkey NFT transferred to your Ethereum address. The number is very long but a QR code is also provided for scanning so you do not have to do all of that typing.