A block is a link in the chain of the blockchain.
Block contains transactions.
A block has the height.
The maximum block size is 1 MB.
The maximum total complexity of scripts in transactions of the block is 2,500,000. The complexity of all executed scripts is taken into account: dApp scripts, account scripts, and asset scripts. (Before activation of feature #16 “Ride V5, dApp-to-dApp invocations”, the maximum total complexity of scripts was 1,000,000.)
# Binary format
See the Block binary format article.