shard

type Shard struct {
	// Hash of the Shard, derived from the BlockHash and the sharding PRF.
	Hash sig.Hash
	// BlockHeader and BlockHeight on Ethereum when the Shard was formed.
	BlockHeader sig.Hash
	BlockHeight block.Height

	// Signatories maintaining the Shard. A Signatory is allowed to appear multiple times in the same Shard.
	Signatories sig.Signatories
}