When a new user mints a document at a price of $100 per year or $150 for two years, a tax of 20% is deducted from the minting fee. This tax is shared among documents previously minted on the platform, which have durations of either one year or two years respectively.

For instance, if there are 100 new documents being minted each day, with a total price of $10000, a 20% tax amounting to $2000 is deducted. This 20% is then divided among all the document that were minted previously.

The maximum earning for all documents is 3x the mint fee.