anchor.diff:      MinedBalance = get_balance(new_node3, PubKey3, Cfg),
       ?assert(MinedBalance >= MinedReward),
       ct:log("Mined balance on ~p with public key ~p is ~p", [new_node3, PubKey3, MinedBalance]),
  -    %% Send spend transaction.
  +    %% Send spend transaction and make sure recipient account received the tokens.
       Fee = 5,
       BalanceToSpend = MinedBalance - Fee,
  -    ok = post_spend_tx(new_node3, PubKey1, BalanceToSpend, Fee, Cfg),
  -    ct:log("Sent spend tx with balance of ~p from node ~p with public key ~p to account with public key ~p",
  -           [BalanceToSpend, new_node3, PubKey3, PubKey1]),
  -    %% Make sure recipient account received the tokens.
  -    aest_nodes:wait_for_value({balance, PubKey1, BalanceToSpend}, [new_node3], 20000, Cfg),
  -    ReceivedBalance = get_balance(new_node3, PubKey1, Cfg),
  -    ct:log("Balance of account with public key ~p is ~p", [PubKey1, ReceivedBalance]),
  -    ?assertEqual(BalanceToSpend, ReceivedBalance),
  -    %% Recipient account has one spend transaction.
  -    [#{block_hash := SpendTxBlockHash, block_height := SpendTxHeight, tx := TxInfo}] =
  -        get_account_txs(new_node3, PubKey1, Cfg),
  -    ?assertEqual(ReceivedBalance, maps:get(amount, TxInfo)),
  -    ?assertEqual(Fee, maps:get(fee, TxInfo)),
  -    ?assertEqual(PubKey3, maps:get(sender, TxInfo)),
  -    ?assertEqual(PubKey1, maps:get(recipient, TxInfo)),
  +    {SpendTxBlockHash, SpendTxHeight} =
  +        post_spend_tx_and_wait_in_chain(new_node3, PubKey3, PubKey1, BalanceToSpend, Fee, Cfg),
       %% Block with spend transaction has new protocol version.
       ?assertEqual(
          ?NEW_PROTOCOL_VERSION,
  
positive.code:         aest_nodes:http_get(NodeName, ext_http, [v2, account, txs, PubKey], Params, Cfg),
      Txs.
  
  post_spend_tx(NodeName, Recipient, Amount, Fee, Cfg) ->
      Headers = [{<<"Content-Type">>, <<"application/json">>}],
      Body = jsx:encode(#{
  
negative.code:     MinedBalance = get_balance(new_node3, PubKey3, Cfg),
      ?assert(MinedBalance >= MinedReward),
      ct:log("Mined balance on ~p with public key ~p is ~p", [new_node3, PubKey3, MinedBalance]),
      %% Send spend transaction and make sure recipient account received the tokens.
      Fee = 5,
      BalanceToSpend = MinedBalance - Fee,
      {SpendTxBlockHash, SpendTxHeight} =
          post_spend_tx_and_wait_in_chain(new_node3, PubKey3, PubKey1, BalanceToSpend, Fee, Cfg),
      %% Block with spend transaction has old version.
      ?assertEqual(
         ?V_0_11_0_PROTOCOL_VERSION,
  