OCP was announced February 22nd and launched March 1st 2017 (unix time 1488326400). There was no premine and the block reward for the first 500 blocks was 0, making the first four days of mining with 0 payout to prevent low difficultyShow more [+] instamine. The project was taken over by the community in the first days, developing additional services like block explorers, mining software and social networks. Forking the code and developing new features is encouraged.
This cryptocurrency features a unique reward structure. Paying 0 reward for Proof Of Stake rewards, a PoS block is mined only when a transaction paying the network tx fee is present in the memory pool. Therefore the PoS reward is fees only while the PoW reward is the coinbase transaction plus fees.