Struct OutputRoot

pub struct OutputRoot {
    pub state_root: B256,
    pub bridge_storage_root: B256,
    pub block_hash: B256,
}

The OutputRoot is a high-level commitment to an L2 block. It lifts the state root from the block header as well as the storage root of the Predeploys::L2_TO_L1_MESSAGE_PASSER account into the top-level commitment construction.

https://specs.optimism.io/protocol/proposals.html#l2-output-commitment-construction

Fields

state_root: B256

The state root of the block corresponding to the output root.

bridge_storage_root: B256

The storage root of the L2ToL1MessagePasser predeploy at the block corresponding to the output root.

block_hash: B256

The block hash that the output root represents.

Implementations

impl OutputRoot

pub const ENCODED_LENGTH: usize = 128usize

The encoded length of a V0 output root.

pub const VERSION: u8 = 0u8

The version of the OutputRoot. Currently, the protocol only supports one version of this commitment.

pub const fn version(&self) -> B256

Returns the version of the OutputRoot. Currently, the protocol only supports the version number 0.

pub const fn from_parts( state_root: B256, bridge_storage_root: B256, block_hash: B256, ) -> Self

Constructs a V0 OutputRoot from its parts.

pub fn encode(&self) -> [u8; 128]

Encodes the OutputRoot.

pub fn hash(&self) -> B256

Encodes and hashes the OutputRoot.

Trait Implementations

impl Clone for OutputRoot

fn clone(&self) -> OutputRoot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OutputRoot

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

Formats the value using the given formatter.

impl Display for OutputRoot

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

Formats the value using the given formatter.

impl Hash for OutputRoot

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for OutputRoot

fn eq(&self, other: &OutputRoot) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for OutputRoot

impl Eq for OutputRoot

impl StructuralPartialEq for OutputRoot