Hash of the block (unique per block)
Hash of the parent block (set to a string of 65 zeros for Genesis blocks)
Height of the block (number of confirmed blocks since Genesis block)
Nonce of the block (hex-encoded)
Extra data of the block (hex-encoded).
Number of balance updates
The physical size of a block in bytes
The stripped size of the block with Segregated Witness (signature) data
The size limit of a block in weight units
Indicator if the block is stale.