Algorithms A4. Smart Contract 4: Shipping

Input: product id, order number, product quantity, addr, source, destination[]

1. if addr is valid && addr has authentication

2. if source ==”dairy farm”

3. dairy_farm_details=getFarm(source)

4. x[]=addShipmentInfo(dairy_farm_details, entity id, order number, product quantity, addr, destination.name)

5. if x.order_details = destination.order_details

6. Original Products Received

7. Execute Add Entity smart contract

8. Ownership of the product transferred

9. end

9. else

10. Products are missing or incorrect

11. go to step 4

12. end

13. end

14. else

15. x[]=addShipmentInfo(source, product id, order number, product quantity, addr, destination.name)

16. if x.order_details = destination.order_details

17. Original Products Received

18. Execute Add Product smart contract

19. Ownership of the product transferred

20. end

21. else

22. Products are missing or incorrect

23. go to step 15

24. end

25. end

26. else

27. Invalid or authorised address

28. go to step 1 and enter a valid address

29. end