I believe that bitcoin is the worl currency more than NSA. you know better than us. you explain their difference in this video at dlive. we are learning from here. that's very good one for BTC also with us.
we are happy to see their @ivanli work for us. teaching me. your school is always super. especially i am very intersted to your @ivanli school. best wishes for you. keep it up brw!
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