That can be bought by anyone and you can know the ownership not changing for that that can only change a few features. But when you will sell or buy the account then ownership will be changed manner/activity of the previous owner and the new owner can be different but for copper ownership not changing so activity/manner not changing.
For being a copper membership the owner of the account cant get any advantages from the community I mean cant sell reversible payment, cant take loan for the rank, can take part on the higher ranked campaign and so on. But if account sells then all this opportunity can be taken by the account.