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I was exploring transactions inside of a blockchain using this site, and inside of a transaction I noticed there is attribute called Included in Block and its description is: block this transaction is mined and confirmed in.
(I don't know does it matter but, transaction I was looking is this one)


I was wondering, how is this attribute populated? The reason of my question is that I was exploring how can you, by looking at transaction inside of your UTXO, check in which block transaction was included (and then I found this attribute). Is this the right way?
Thank you!

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I was wondering, how is this attribute populated?

The site uses an index that simply remembers this information. If a block B is seen that contains a transaction T, an entry is stored in the database that signifies "transaction T is in block B".

by looking at transaction inside of your UTXO, check in which block transaction was included (and then I found this attribute)

The UTXO set does not contain this information, nor can it be efficiently requested from arbitrary nodes in the network.

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