ErgoMixer tokens business

I read from kushti that ErgoMixer has tokens under the hood and making some profit. @kushti can you elaborate on this ?

It would be interesting to consider how tokenization, especially for privacy-enhancing applications, can be made in the context of Ergo.

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The mixer is using tokens inside to avoid privacy leaks inferred from fees paid to miners during mix operations. So before you going into mixes, you’re buying enough mix tokens and then pay fees using them via fee-emission boxes ( Paying fee in ErgoMix in primary tokens ), with fee tokens equally distributed in outputs which is about approximate fairness. See ErgoMixer paper for details: https://eprint.iacr.org/2020/044

All the complexity is hidden in the application, end user do not know about fee tokens at all. And mixer dev (devs?) doing some profit by having a difference between token sell price and fee being paid later.

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