Verifying mined blocks
A block is only yours on the canonical chain if:
nvc_getConsensusInfoshows a newheightandtipHasheth_getBlockByHash/ explorer shows your miner address as the fee recipient / coinbase- Your address balance increased by the expected subsidy minus any later reorg
If another tip with more cumulative work appears, your block may have been orphaned. That is normal proof-of-work behavior.