-snip- and make sure there is no discrepancies
You node already did it while it's downloading the blockchain.
It's making sure that the blocks that it downloaded have valid data;
Furthermore, each block is liked with the previous block via its hash so if there's a discrepancy, it wont be able to reach the tip.
But if you want to make sure that there's no discrepancies in your blockchain including the scripts:
You may consider setting
assumevalid=0 config or
-assumevalid=0 command line option
That will set your node to fully verify all the blocks starting from from the genesis block.
Then use
-reindex to validate your already downloaded blocks. (
it will be slower than usual)
