anchor.diff:           , nonce       => Nonce
            , vm_version  => 1
            , amount      => 100
  -         , gas         => 10000
  +         , gas         => 50000
            , gas_price   => GasPrice
            , call_data   => <<"CALL DATA">>
            , ttl         => 0
  
positive.code: 
                 ok
         end},
        {"Ensure persistence",
         fun() ->
                 %% Prepare a few txs.
  
negative.code:          , vm_version => 1
           , deposit    => 10
           , amount     => 200
           , gas        => 100000
           , gas_price  => GasPrice
           , call_data  => <<"NOT ENCODED ACCORDING TO ABI">>
           , ttl        => 0
  