Header

Overview
The header is an data structure that describes a block. It includes information about the block, the transactions contained in the block, the current state of the chain in which the block belongs to. 
Structure
Field
Type
Description
creatorPubKey
String
The public key of the block creator.
difficulty
​HexNumber​
The difficulty of the block.
totalDifficulty
​HexNumber​
The cumulative difficulty of all blocks in the chain.
nonce
​HexNumber​
The nonce discovered during PoW computation.
number
​HexNumber​
The block's number.
parentHash
String
The hash of the parent block.
stateRoot
String
The merkle hash of the state tree.
transactionsRoot
String
The merkle root of transactions in the block.
timestamp
​HexNumber​
The unix timestamp of when the block was created.
extra
[32]HexByte​
Extra data for future use.
Example
{
    "creatorPubKey": "48YQpehoRDYsivCbnedrz19DfTvh345PwWAKGN3jdUjPNdG3Lte",
    "difficulty": "0x989680",
    "extra": "0x",
    "nonce": "0x61879fb427b56cef",
    "number": "0x2",
    "parentHash": "0x211df3aed05b45d620850f40c9b4eac006da7ee0f76a7fa99d5ac16a2c2ca42c",
    "stateRoot": "0xc222870b2ca3f71d30b8d06b8e3f633812a8c0473cecc38b6fcc12eb5cad89ec",
    "timestamp": "0x5bda0ad4",
    "totalDifficulty": "0x1312d00",
    "transactionsRoot": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

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