text: from typing import Tuple
  
  import aiosqlite
  
  from hddcoin.consensus.blockchain import Blockchain
  from hddcoin.consensus.constants import ConsensusConstants
  from hddcoin.full_node.block_store import BlockStore
  from hddcoin.full_node.coin_store import CoinStore
  from hddcoin.full_node.hint_store import HintStore
  from hddcoin.util.db_wrapper import DBWrapper
  
  
  async def create_ram_blockchain(consensus_constants: ConsensusConstants) -> Tuple[aiosqlite.Connection, Blockchain]:
      connection = await aiosqlite.connect(":memory:")
      db_wrapper = DBWrapper(connection)
      block_store = await BlockStore.create(db_wrapper)
      coin_store = await CoinStore.create(db_wrapper)
      hint_store = await HintStore.create(db_wrapper)
      blockchain = await Blockchain.create(coin_store, block_store, consensus_constants, hint_store)
      return connection, blockchain
  