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This question already has an answer here:

Considering a block chain to store information on buying and selling of a houses. From where do the block chain obtain information ? From where information about litigation in the property can be obtained?

marked as duplicate by Malone, Richard Horrocks, flygoing, gisdev_p, maurelian Nov 25 '17 at 20:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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This project won 3rd place in a hackathon this year and has an example about your question. It may help you: https://youtu.be/-y0WGwzKaxI

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