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Frankly speaking there's no such free btc, we all know that even airdrops and bounties has their own requirement to be completed before we are able to reap rewards
Freebitco.in Here you'll earn free crypto but it depends on your luck sort of a lottery game
I used to participate here in freebitco.in but I just didn't have the patience or felt the I was lucky enough to earn quite big so I figured I have to look for other ways of earning crypto.
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it might be better to signature or trade to earn crypto. However you want to qualify before joining the signature campaign.
Yep. Participating in signature campaign is better than a lottery-like game since there's a fixed amount of btc that you'll be able to receive. That's my opinion though because those are just the two things I've tried to accumulate crypto (btc).
Well, you can try other things like bounties, airdrops, or offering your skills and services in exchange for crypto. That is, if that's what you think that'll suit you; or while waiting for you to rank up and then participate in a sig campaign.