Interactive Coin Offering

The interactive Coin Offering is a method which aim to solve the certainty of participation / certainty of valuation dilemma.
It allows the buyers to set a maximum valuation for the tokens to be sold.
If at the end of the sale, the total amount raised is higher than some of the buyer maximum valuations, buyers (starting with the ones which put the lowest valuation) are refunded until the remaining amount raised is equal to the lowest maximum valuation of the non-refunded buyers.

You can look at this paper for more details:

We made a smart contract implementation of this token sale method:

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