A Bitcoin empty block was mined at height 844689

According to mempool data, an empty block (i.e., a block that only contains the Coinbase block reward transaction) was mined at Bitcoin height 844689, with only a 12-second interval from the previous block height.

Miners pack empty blocks for economic benefits, which is the wisest choice for them. In order to fully utilize this time for mining and avoid conflicts with transactions packed in parent blocks, miners cannot fill transactions into blocks. That is to say, miners can only try to mine empty blocks.