You say that every time you dump the game, the first line changes? lol thats interesting. Are there many difference between the first and 2nd dump?
No no read again. I said that each time I dumped a different cart of the same game, the ID changed. Only this first line, all the rest is 100% same.
If you dump twice the same cart, you'll get the same id of course. But if you use X cartridges of the same game, you will end with X different ids. At least in my case that's what I've got.