BucketOf returns valid bucket always, but it.

BlockHeaderHashByHeight maps hash of encoded block header from height.

BytesByHash maps data except merkle trie nodes from sha3(data).

ChainProperty is general key value map for chain property.

ListByMerkleRootBase is the base for the bucket that maps list from network type dependent merkle root(list).

MerkleTrie maps RLP encoded data from sha3(data).

TransactionLocatorByHash maps transaction locator from transaction hash.

Bucket.