Hey Kashish Grover I'm not so sure about the use cases of Blockchain but after looking back into some articles, notes and expertise reports i have found few of the result :

1. Digital identification : When we say identification it points mainly to passport, birth certificates and also some expert says that can be implemented for marriage certificates. Cryptographic keys in the hands of individuals allow for new ownership rights and a basis to form interesting digital relationships. Because it is not based on accounts and permissions associated with accounts, because it is a push transaction, and because ownership of private keys is ownership of the digital asset, this places a new and secure way to manage identity in the digital world that avoids exposing users to sharing too much vulnerable personal information.
2. Tokenization : It will helpful more for Government in terms for tokenization. This essentially means tokens are used as to bind the physical and digital worlds. These digital tokens are useful for supply chain management, intellectual property, and anti-counterfeiting and fraud detection.
3. Digital Voting : The greatest barrier to getting electoral processes online, according to its detractors, is security. Using the blockchain, a voter could check that her or his vote was successfully transmitted while remaining anonymous to the rest of the world.

Other list :

1. Tax filing
2. Asset management
3. Authentication
4. Business licensing & authorization
5. Business process re-engineering
6. Commercial distribution management
7. Crowdfunding
8. Digital manufacturing
9. Document management & exchange system
10. Education
11. Electronic patient records management
12. Energy credits
13. Fraud prevention in Internet of Things
14. Government account settlement & reconciliation
15. Increased liquidity in inefficient markets with low volumes through the use of smart contracts Internet of Things
16. Issuance of equity shares
17. Logistics
18. Loyalty points and rewards
19. Mortgages
20. Prevention of cyber fraud and hacks
21. Real property purchase
22. Smart utility grids
23. Supply chain management
24. Training and development Uniform Commercial Code (UCC) filings
25. Real-time gross settlement (RTGS) system
26. Remittances
27. Interbank payments
28. Asset transfer
29. Clearing and settlement of securities
30. Financial messaging system
31. Syndicated loans
32. Trade finance
33. Transfer, clearing, and settlement of securities
34. Official government identification documents management
35. Land registry
36. Business incorporation records
37. Birth and death certificates
38. Supply chain cargo tracking
39. Tracking car fleets
40. Shareholder voting
41. Transaction monitoring
42. Humanitarian cash-based transfer
43. Retail purchasest

Regards : Md Zaid Imam