anchor.diff:                                         Map)),
       BothSigned = aec_test_utils:sign_tx(WithdrawTx, [InSecKey, RespSecKey]),
       Transaction = aec_base58c:encode(transaction, aetx_sign:serialize_to_binary(BothSigned)),
  -    {ok, 200, Response} = request(Node, 'PostTransaction', #{tx => Transaction}),
  -    Response.
  +    verify(200, request(Node, 'PostTransaction', #{tx => Transaction})).
   
   post_oracle_register_tx(Node, OAccount, Opts) ->
       #{ pubkey := OPubKey, privkey := OPrivKey } = OAccount,
  
positive.code:     Signed = aec_test_utils:sign_tx(RespTx, [PrivKey]),
      SignedEnc = aetx_sign:serialize_to_binary(Signed),
      Transaction = aec_base58c:encode(transaction, SignedEnc),
      {ok, 200, Resp} = request(Node, 'PostTransaction', #{tx => Transaction}),
      Resp.
  
  %% Use values that are not yet base58c encoded in test cases
  wait_for_value({balance, PubKey, MinBalance}, NodeNames, Timeout, Ctx) ->
  
negative.code:     {ok, Tx} = aec_spend_tx:new(Params),
      SignedTx = aec_test_utils:sign_tx(Tx, SendSecKey),
      SerSignTx = aetx_sign:serialize_to_binary(SignedTx),
      verify(200, request(Node, 'PostTransaction', #{
          tx => aec_base58c:encode(transaction, SerSignTx)
      })).
  
  post_create_state_channel_tx(Node, Initiator, Responder, #{nonce := Nonce} = Map) ->
      #{ pubkey := InPubKey, privkey := InSecKey } = Initiator,
  