use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::blockdata::transaction::{Transaction, TxOut};
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::network::constants::Network;
use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::blockdata::transaction::{Transaction, TxOut};
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::network::constants::Network;