Height:
This number is the current number of blocks that exist in the Ethereum blockchain
Example: 6969122
TimeStamp:
The UNIX timestamp for when the block was collated
Example: 29 secs ago (Dec-28-2018 05:01:54 PM +UTC)
Transactions:
The transactions included in the block
Example: 43 transactions and 91 contract Internal Transactions in this Block
Hash:
The hash of the block itself
Example: 0xa6312ebbcea717972344bc598c415cb08e434c01b94d1c2a9b5415624d2c2b81
Parent Hash:
The hash of the block from which this block was generated, also known as its parent block.
Example: 0xa48e2ad13de011f127b345a81a91933d221f5a60d45852e7d7c2b5a07fda9fe2
Sha3Uncles:
A SHA3 hash of the uncle block data included in the block
Example: 0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347
Mined By:
The address of who mined the block and received the block reward
Example: 0x5a0b54d5dc17e0aadc383d2db43b0a0d3e029c4c (SparkPool) in 2 secs
Difficulty:
A number that represents the difficulty required to mine this block
Example: 2,511,265,102,818,605
Total Difficulty:
A number that represents the total mining difficulty of the chain up until this block
Example: 8,470,035,190,867,378,349,872
Size:
The size of the block file in bytes
Example: 13160 bytes
Gas Used:
The total amount of gas used by all the transactions included in this block
Example: 7,997,769 (99.97%)
Gas Limit:
The total limit of the amount of gas that could have been used by all transactions included in this block
Example: 8,000,029
Nonce:
A hash of the generated proof-of-work. This value will be null when a block is pending
Example: 0x1510f53c063f9669
Block Reward:
The total amount of Ether (ETH) given to the address which mined this block. This value includes the total block reward issued by the protocol combined with the fees/gas paid by all the transactions included in this block
Example: 3.032755182184797136 Ether (3 + 0.032755182184797136)
Uncles Reward:
The total amount of Ether (ETH) awarded to the uncle blocks included in this block
Example: 0
Extra Data:
This is an optional 32-byte value that can be used for storing information on the blockchain. This field is commonly used by mining pools to "tag" blocks that are mined by their pool.
Example: sparkpool-eth-cn-hz2 (Hex:0x737061726b706f6f6c2d6574682d636e2d687a32)