1. Payment processing and money transfer

2. Monitor supply chains

3. Retail royalty rewards programs

4. Digital IDs

5. Data sharing

6. Copyright and royalty protection

7. Digital voting

8. Real estate, land, and auto title transfers

9. Food safety

10. Immutable data backup

11. Tax regulation and compliance

12. Workers' rights

13. Medical recordkeeping

14. Weapons tracking

15. Wills or inheritances

16. Equity trading

17. Managing Internet of Things networks

18. Expediting energy futures trading and compliance

19. Securing access to belongings

20. Tracking prescription drugs

Comment below if you think of more real-world uses of blockchain.