1) The document proposes using blockchain technology and machine learning algorithms like SVM, decision trees, naive Bayes, and logistic regression to identify fraudulent transactions in real-time.
2) Private permissioned blockchains would store transaction data for machine learning models to analyze and detect anomalies indicating fraudulent activity.
3) A k-means clustering algorithm would be applied to transaction data on the blockchain to identify inconsistencies and flag possible fraudulent transactions for further review.