The marketcap on Coinmarketcap and Worldcoinindex are different. Why?

The “marketcap” shows what the total value of all issued Guldens are in dollars. You can check the “marketcap”, for example, at: Coinmarketcap.com or Worldcoinindex.com. However, both websites show different marketcap-values for Gulden. How is this possible?

gulden-world-coin-index

gulden-coinmarketcap

Worldcoinindex takes the premine in account when calculating the marketcap. Coinmarketcap on the other hand calculates the marketcap by only taking looking at all the issued Guldens.

What is the premine?
At the introduction of Gulden, 170 million NLG is reserved for funding the development, security, hosting, community projects, marketing and other costs that were not foreseen at the time. The premine will only be used to strengthen the Gulden.