What can block chain be used for?

Related questions

1. What is Blockchain technology in simple terms?
2. Is Blockchain a technology or concept?
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4. In which programming language Blockchain is written?
5. Is Blockchain technology the new Internet?
6. What is unique about Blockchain technology?
7. What is meant by block chain technology?
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Tags

1. #voting
2. #physical
3. #rights
4. #currency
5. #system
6. #digital
7. #technology
8. #blockchain
9. #documents
10. #provenance
11. #bitcoin
12. #tracking
13. #ownership
14. #variety
15. #blockchains
16. #assets
17. #applications
18. #popularised