Where is the data on the amount of cryptocurrency stored?

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progerstas2021-05-05 20:44:26

Cryptocurrency

progerstas, 2021-05-05 20:44:26

Where is the data on how much cryptocurrency is in which wallet?
If in a separate database, then it is not entirely clear why a blockchain is needed.
And if it is calculated from the blockchain by transactions, this is somehow strange.

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Vasily Bannikov, 2021-05-05
@vabka

And if from the blockchain it is calculated by transactions

Everything is exactly the same, but it depends on the cryptocurrency.
On the air, for example, everything is difficult with the definition of balance