The other six States based their claims on various charters, which in reality conferred rights not one whit more substantial.
These different claims were not of a kind to which any outside power would have paid heed.

Their usefulness came in when the States bargained among themselves.

In the bargaining, both among the claimant States, and between the claimant and the non-claimant States, the charter titles were treated as of importance, and substantial concessions were exacted in return for their surrender.

But their value was really inchoate until the land was reduced to possession by some act of the States or the Nation.
Virginia and North Carolina.
At the close of the Revolutionary War there existed wide differences between the various States as to the actual ownership and possession of the lands they claimed.

Virginia and North Carolina were the only two who had reduced to some kind of occupation a large part of the territory to which they asserted title.