Teranode Data Model - Block Header
The block header is a data structure that contains metadata about a block. It is used to connect blocks together in a blockchain. The block header is a structure that is hashed as part of the proof-of-work algorithm for mining. It contains the following fields:
| Field | Type | Description |
|---|---|---|
| Version | uint32 | Version of the block, different from the protocol version. Represented as 4 bytes in little endian when built into block header bytes. |
| HashPrevBlock | *chainhash.Hash | Reference to the hash of the previous block header in the blockchain. |
| HashMerkleRoot | *chainhash.Hash | Reference to the Merkle tree hash of all subtrees in the block. |
| Timestamp | uint32 | The time when the block was created, in Unix time. Represented as 4 bytes in little endian when built into block header bytes. |
| Bits | NBit | Difficulty target for the block. Represented as a target threshold in little endian, the format used in a Bitcoin block. |
| Nonce | uint32 | Nonce used in generating the block. Represented as 4 bytes in little endian when built into block header bytes. |