Struct BeaconChainHeader

pub struct BeaconChainHeader<'a> {
    pub shared: SharedBlockHeader<'a>,
    pub child_shard_blocks: BlockHeaderChildShardBlocks<'a>,
    pub consensus_parameters: BlockHeaderBeaconChainParameters<'a>,
    pub pre_seal_bytes: &'a [u8],
}

Block header that corresponds to the beacon chain

Fields

shared: SharedBlockHeader<'a>

Shared block header

child_shard_blocks: BlockHeaderChildShardBlocks<'a>

Information about child shard blocks

consensus_parameters: BlockHeaderBeaconChainParameters<'a>

Consensus parameters (on the beacon chain)

pre_seal_bytes: &'a [u8]

All bytes of the header except the seal

Implementations

impl<'a> BeaconChainHeader<'a>

pub fn try_from_bytes(bytes: &'a [u8]) -> Option<(Self, &'a [u8])>

Try to create a new instance from provided bytes.

bytes should be 8-bytes aligned.

Returns an instance and remaining bytes on success, None if too few bytes were given, bytes are not properly aligned or input is otherwise invalid.

pub fn is_internally_consistent(&self) -> bool

Check block header’s internal consistency

pub fn try_from_bytes_unchecked(bytes: &'a [u8]) -> Option<(Self, &'a [u8])>

The same as Self::try_from_bytes(), but for trusted input that skips some consistency checks

pub fn to_owned( self, ) -> Result<OwnedBeaconChainHeader, OwnedBeaconChainHeaderError>

Create an owned version of this header

pub fn pre_seal_hash(&self) -> Blake3Hash

Hash of the block before seal is applied to it

pub fn is_seal_valid(&self) -> bool

Verify seal against BeaconChainHeader::pre_seal_hash()

pub fn root(&self) -> BlockRoot

Compute block root out of this header.

Block root is a Merkle Tree Root. The leaves are derived from individual fields in SharedBlockHeader and other fields of this enum in the declaration order.

Note that this method does a bunch of hashing and if hash is needed often, should be cached.

Trait Implementations

impl<'a> Clone for BeaconChainHeader<'a>

fn clone(&self) -> BeaconChainHeader<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for BeaconChainHeader<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Deref for BeaconChainHeader<'a>

type Target = SharedBlockHeader<'a>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a> From<BeaconChainHeader<'a>> for BlockHeader<'a>

fn from(value: BeaconChainHeader<'a>) -> Self

Converts to this type from the input type.

impl<'a> GenericBlockHeader<'a> for BeaconChainHeader<'a>

type Owned = OwnedBeaconChainHeader

Owned block header

fn try_to_owned(self) -> Option<Self::Owned>

Turn into owned version

fn root(&self) -> BlockRoot

Compute block root out of this header.

impl<'a> Copy for BeaconChainHeader<'a>