There is not a set amount of RISE to participate in forging, as it depends on the total vote weight for the top 101 delegates. You can check current vote requirements here:

I think RISE has a great vision and potential future. It's a very promising project considering the progress they've made this year.

RISE is a Delegated Proof of Stake coin which allows you to earn additional coins by voting for delegates. Here are some details if anyone is interested: RISE DPoS

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