1 Introduction  
2 Background  
2.1 Traditional Financial Infrastructure  
2.2 FinTech  
2.3 Blockchain  
3 Blockchain Platforms Deployed in Finance Areas  
3.1 Ethereum  
3.2 Hyperledger Fabric  
3.3 Corda  
3.4 Quorum  
3.5 Symbiont Assembly  
3.6 tZERO  
4 Blockchain Applications in Finance  
4.1 Capital Raising  
4.2 Securities Trading  
4.3 Financial Analysis  
4.4 Investment Management  
5 Observations  
5.1 Comparative Analysis of Blockchain Platforms  
5.2 Research Events of Mainstream Financial Institutions  
5.3 Security Issues of Decentralized Finance Applications  
6 Conclusion