It all depends on how you define 'circulating supply'.
CoinMarketCap is using their own method to determine the amount that is in circulation.
[...]
We have found that Circulating Supply is a much better metric than Total Supply for determining the market capitalization – Coins that are locked, reserved, or not able to be sold on the public market, are coins that cannot affect the price and thus should not be allowed to affect the market capitalization as well.
[...]
Circulating Supply is verified by our team through communication with the project’s team. We ask for details including but not limited to the initial distribution, private allocations, locked addresses, team-controlled addresses, and addresses containing portions of the supply allocated for future use. We examine the project’s blockchain and distribution table to determine the best approximation of what is freely circulating in the market based on the information provided. Once the information is verified, circulating supply is usually updated in real time by using relevant block explorer APIs.
Source:
https://coinmarketcap.com/methodology/ ((7) Circulating Supply)
The Credits team has sent the info regarding the newly unlocked tokens back in March. The information of tokens being unlocked is also mentioned on their website,
https://credits.com/en/Home/ICO With some knowledge you can even verify the unlock date that was set on the team wallets on Etherscan.
Depending on how you define the circulating supply we can say the following about tokens that are unlocked, let's call that the 'unlocked supply' for now:
Unlocked supply before first unlock (65% of total supply): 162 156 196,29 CS
Current unlocked supply (85% of total supply): 212 050 410,53 CS
Current supply according to CMC (April 22): 158 665 594 CS
So, why is the supply increasing on CMC? Here is your answer.