Discuss the feasibility of turning the 'option to purchase' into a smart contract. It may be useful to consider the following points. 

(i) To what extent can the needed input (name of purchaser, property, date, sum of money, etc.) be processed by a machine. 

(ii) Can a machine enforce the terms of the contract? 

(iii) Will new buildings or apartments pose a challenge?

(iv) Is there a need to place the contracts on a public blockchain network?