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A few I am currently or have previously been involved with:
Regulatory compliance, supply chain management, upstream oil accounting, contract notarisation, component lifecycle management (aviation parts), provable fairness in the gambling industry, machine learning and data security.
This is a good starting point for understanding the basic principles of NFTs
https://en.m.wikipedia.org/wiki/Tokenization_(data_security)
I have to admit I'm totally ignorant about NFTs beyond the snake oil stuff. What are the other (actually useful) uses?