Block Model

An introduction and overview of the VechainThor blockchain block model.
VeChainThor defines a block in Golang as:
// block.go
​
type Block struct {
	header *Header
	txs    tx.Transactions
}
​
type Header struct {
	body headerBody
}
​
type headerBody struct {
	ParentID    thor.Bytes32
	Timestamp   uint64
	GasLimit    uint64
	Beneficiary thor.Address
​
	GasUsed    uint64
	TotalScore uint64
​
	TxsRoot      thor.Bytes32
	StateRoot    thor.Bytes32
	ReceiptsRoot thor.Bytes32
​
	Signature []byte
}
​
type Transactions []*Transaction
​
Fields within the headerBody, Γ\GammaΓ
, are defined as:
ParentID - the ID of the parent block.
Timestamp - the block time
GasLimit - the maximum amount of gas that all transactions inside the block are allowed to consume
Beneficiary - the address assigned by the block generator to receive reward (in VTHO)
GasUsed - the actual amount of gas used within the block
TotalScore - the accumulated witness number of the chain branch headed by the block. See Trunkfor more detail.
TxsRoot - root hash of the transaction in the payload
StateRoot - root hash for the global state after applying changes in this block
ReceiptsRoot - hash of the transaction receipts trie
Signature - signature of block builder
The block ID (thor.Bytes32) can be computed as:
​BlkID=h∘(hash(Γ−sig)[4:]BlkID = h \circ (hash(\Gamma - sig )[4:]BlkID=h∘(hash(Γ−sig)[4:]
​
where hhh
 is the block number stored as a uint32 and [4:][4:][4:]
 the operation that discards the first four bytes.
Blocks
Transactions
Last modified 19d ago