I'm going to respond to all of you at once by saying this: bcrypt is the best possible solution that we are aware of. It's infeasible for anyone but the most resourceful adversaries to brute force your hashed IP, and even then it's still expensive.
However, that's part of why we're open source. You can't trust us when we say that we aren't storing your IP. We could be doing it and you'd have no way of being able to tell. If you're concerned about this, run a private instance of MediaCrush. There are instructions in the README, it's pretty easy to set up.
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I'm going to respond to all of you at once by saying this: bcrypt is the best possible solution that we are aware of. It's infeasible for anyone but the most resourceful adversaries to brute force your hashed IP, and even then it's still expensive.
However, that's part of why we're open source. You can't trust us when we say that we aren't storing your IP. We could be doing it and you'd have no way of being able to tell. If you're concerned about this, run a private instance of MediaCrush. There are instructions in the README, it's pretty easy to set up.