the wallet is old but transactions are new 2020 transactions type : mined unconfirmedenter image description here

  • What is that????????? – daemon Sep 27 '20 at 18:27

Those are orphaned blocks, it means while you were mining that block someone else mined it faster than you, thus you do not get the credit for those mined blocks.

  • 1
    He's mining 11 blocks in 17 minutes (a magnitude faster than the entire network combined). His block subsidy is completely off. I think there is far more wrong here than just some orphaning. My guess is that this is broken software, or at least not Bitcoin. – Pieter Wuille Sep 29 '20 at 1:25

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