it is very easy to earn bitcoins online because there are so many website that are giving away satoshi's/bitcoin and the best way to earn bitcoins online is to invest in trading website and try to learn trading you can gain there many profits as long as you are industrious.
With trading or investing your bitcoin in any project I think you can earn very fast but you should know that when you wanna start earning with those kind you must accept the risk, they are not safe all the time maybe with 1 wrong decision you can lose all your bitcoin so before start anything you should do a research about it
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