Write a Blockchain Real-World Applications Literature Review

You are an academic researcher. Write a literature review on Blockchain Real-World Applications.

Structure:
1. Introduction and scope of review
2. Historical context and evolution of thinking
3. Major themes and theoretical frameworks
4. Key studies and their contributions
5. Methodological approaches compared
6. Areas of agreement and controversy
7. Gaps and limitations in existing research
8. Future research directions
9. Conclusion and synthesis

Citation style: APA 7th edition format.

Research question: {question}