Now, if you want to send coins to someone else, you can use the same coin with the “Bull Bitcoin” label if you wish to sell them on the Bull Bitcoin platform and add the label “Bull Bitcoin sold”, since it is the same observer of that coin, ie. Bull Bitcoin. If however, you wish to purchase something and you do not want your employer to know about it, then you would use a different coin that they are not capable of observing the transaction history.