Trait ShardMembershipEntropySourceChainInfo 

pub trait ShardMembershipEntropySourceChainInfo: Send + Sync {
    // Required method
    fn ancestor_header_proof_of_time(
        &self,
        ancestor_block_number: BlockNumber,
        descendant_block_root: &BlockRoot,
    ) -> Option<PotOutput>;
}

Chain info for shard_membership_entropy_source().

Must have access to enough parent blocks.

Required Methods

fn ancestor_header_proof_of_time( &self, ancestor_block_number: BlockNumber, descendant_block_root: &BlockRoot, ) -> Option<PotOutput>

Get proof of time of the block at ancestor_block_number on the chain ending at descendant_block_root.

If ancestor_block_number is the descendant’s own number, the descendant’s proof of time is returned. Returns None if ancestor_block_number is higher than the descendant’s number or if either block is not available.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T> ShardMembershipEntropySourceChainInfo for T

where T: ChainInfo<OwnedBeaconChainBlock>,