Or it can be like this: "The first coin that is not based on a hype"
))) Just joking.
But the new "Supporting charities one coin at a time" is a bad choice. It sounds generic and banal. It doesn't communicate anything.
The slogan should communicate the essence of the coin.
And the essence (the scheme) here is: 1. You mine, you buy/sell = You make money & 2. by doing these activities you help people that are in need.
This scheme should become a one presentable sentence.
A possible solution: "The richer you become, the more you help others."
This slogan communicates 1. that with CharityCoin you can become rich (this needs to be emphasized, otherwise people won't come), 2. when you get richer, others become richer too.
I think you get the idea. There is a need to play with words. I'm not a native English speaker.