def derive_change_address(self) -> WalletAddress:
new_address = WalletAddress(
self.watch_only_wallet.xpub, self.watch_only_wallet.base_keypath,
len(self.watch_only_wallet.change_addresses), True)
self.watch_only_wallet.change_addresses[str(new_address)] = new_address
WalletFile.save(self.watch_only_wallet)
return new_address
def persist_spend(self, selection: CoinSelection):
for utxo in map_coin_selection_to_utxos(selection,
self.watch_only_wallet):
utxo.is_awaiting_spend = True
if selection.change_value > 0:
self.watch_only_wallet.last_change_address.is_fresh = False
self.watch_only_wallet.refresh_balances()
WalletFile.save(self.watch_only_wallet)
def derive_external_address(self, label) -> WalletAddress:
new_address = WalletAddress(
self.watch_only_wallet.xpub,
self.watch_only_wallet.base_keypath,
len(self.watch_only_wallet.external_addresses),
label=label)
self.watch_only_wallet.external_addresses[str(
new_address)] = new_address
WalletFile.save(self.watch_only_wallet)
return new_address
def _sync_to_blockchain(self):
most_recent_block = self.blockchain_client.get_most_recent_block()
if most_recent_block == self.watch_only_wallet.current_block:
return
while self.blockchain_client.block_is_orphan(
self.watch_only_wallet.current_block):
self.purge_orphaned_block(self.watch_only_wallet.current_block)
for address in self.watch_only_wallet.addresses:
self.update_address_utxos(address)
self.watch_only_wallet.current_block = most_recent_block
self.watch_only_wallet.refresh_balances()
WalletFile.save(self.watch_only_wallet)
def purge_orphaned_block(self, orphan: Block):
for address in self.watch_only_wallet.addresses:
if address.utxos:
address.utxos = [
utxo for utxo in address.utxos
if utxo.block.hash != orphan.hash
]
if not address.utxos:
address.is_fresh = self.blockchain_client.address_is_fresh(
address)
self.watch_only_wallet.current_block = self.blockchain_client.get_block_by_hash(
self.watch_only_wallet.current_block.prev_hash)
self.watch_only_wallet.refresh_balances()
WalletFile.save(self.watch_only_wallet)