If this is possible would this produce the key to the genesis block? I am very curious why you'd see bitcoin spinoffs like BCH have different wallet formats than bitcoin.
Possible. In fact, if I remember correctly one of the infamous Bitcoin forks, BSV, has some of their community members wanting to fork the BSV chain and hand over the Satoshi coins to Craig "Faketoshi" Wright. It seems like they haven't went through with it, but yea it's a possibility.