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Why is the application of Blockchain to finance has this popularity than application of Blockchain to other sectors?
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In the posting above, it has already been correctly noted that to a large extent, the equality between bitcoin and blockchain in the minds of people was formed due to the fact that they are poorly versed in this topic, and all they know about it, they draw from the media. And blockchain in companies from other sectors is more corporate, not aimed at mass consumption, so it is not so widely covered in popular media, and as a result is not so widely known to the masses. IMHO.