RE: Market Maker Smart Contract Is LIVE - HIVE-ENGINE.COM DEFI in the house!!!
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I think that this is not going to work if you make the code public. If everybody else knows the rules according to which you trade, this will be easy to game I am afraid.
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To some extent that concern is mitigated by the fact that people can change their trading configuration to respond to any such attempt to game the system. Also we intend to introduce a number of measures to make it more difficult for people to do so. If enough market makers are running on a single market, it will also be very hard for someone to deduce all the ways in which they may interact in a manner that allows them to take advantage.
I think you might be right - if the effort is too high compared to the potential profits. The bigger the potential profit is, however, the bigger the incentive to game the system. I have built a non-public trading bot for Steem Engine last year, and I was not overly successful I must admit...
I've also been running a private market maker bot of my own design for the past year on various Engine markets. The design of that early bot heavily influenced the design of this smart contract system. Overall it has made more than it lost, but it does require a lot of babysitting and watching the markets so I know when to change the configuration or turn off the bot temporarily when things move against me. People shouldn't make the mistake of thinking this is a passive income strategy that they can just turn on and then leave alone. It needs active management and is more of an art than an exact science.
Will be very interesting to see how this all goes, I'm excited to see what people do with it and how the markets will be impacted!
if you want to, I can give it a non-pubic try later at some point. But at the moment I am busy with my soccer manager game project Rabona...