Ja, hier auch was dazu in der offiziellen FAQ:

How are the new tokens distributed?

Out of the new tokens that are generated:

• 75% go to the reward pool, which is split between authors and curators.
• 15% of the new tokens are awarded to holders of Steem Power.
• The remaining 10% pays for the witnesses to power the blockchain.

https://steemit.com/faq.html#How_are_the_new_tokens_distributed