relationship between inputs in single transaction

relationship between inputs in single transaction

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I'm a student to learn about bitcoin.

i saw a lot of transactions from Blockchain.info for study, and some of transactions can not be understood.

why address '367f4YW...' pay to itself?

is it available to guess a relationship between '367f4YW...' and '15ozxv...'?

https://ift.tt/2MUT5c1

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