Trait tc_consensus_pow::PowAlgorithm [−][src]
Algorithm used for proof of work.
Associated Types
type Difficulty: TotalDifficulty + Default + Encode + Decode + Ord + Clone + Copy
[src]
Difficulty for the algorithm.
Required methods
fn difficulty(&self, parent: B::Hash) -> Result<Self::Difficulty, Error<B>>
[src]
Get the next block’s difficulty.
This function will be called twice during the import process, so the implementation should be properly cached.
fn verify(
&self,
parent: &BlockId<B>,
pre_hash: &B::Hash,
pre_digest: Option<&[u8]>,
seal: &Seal,
difficulty: Self::Difficulty
) -> Result<bool, Error<B>>
[src]
&self,
parent: &BlockId<B>,
pre_hash: &B::Hash,
pre_digest: Option<&[u8]>,
seal: &Seal,
difficulty: Self::Difficulty
) -> Result<bool, Error<B>>
Verify that the difficulty is valid against given seal.
Provided methods
fn preliminary_verify(
&self,
_pre_hash: &B::Hash,
_seal: &Seal
) -> Result<Option<bool>, Error<B>>
[src]
&self,
_pre_hash: &B::Hash,
_seal: &Seal
) -> Result<Option<bool>, Error<B>>
Verify that the seal is valid against given pre hash when parent block is not yet imported.
None means that preliminary verify is not available for this algorithm.
fn break_tie(&self, _own_seal: &Seal, _new_seal: &Seal) -> bool
[src]
Break a fork choice tie.
By default this chooses the earliest block seen. Using uniform tie breaking algorithms will help to protect against selfish mining.
Returns if the new seal should be considered best block.