Algorithms A1. Smart Contract 1: Add Entity

Input: entity name, entity type, entity quantity, addr, seller, buyer

1. if addr is valid && addr has adding authentication

2. dairy_farm_details=getFarm(seller)

3. addProduct_Adulteration_Info(entity name, entity type)

4. addProduct_Contamination_Info(entity name, entity type)

5. addProduct_Nutrition_Info(entity name, entity type)

6. x=addProduct(entity name, entity type, entity quantity, dairy_farm_details, buyer)

7. if x==1

8. Entity Added Successfully

9. Entity ID Generated

10. Initiate the payment procedure to the farmer

11. Execute Product Purchase1 smart contract

12. end

13. else

14. Revert the contract and display an error message

15. end

16. end

17. else

18. Invalid or authorised address

19. go to step 1 and enter a valid address

20. end