they just rewarded it to a lot of people. My friends got some too.
There was a message saying that HitBtc is crediting random accounts with 500 units... back then 500 = $1.00 exactly . now its like $15
so they gave a few thousand people $1 each... not that big of a deal... untill its worth $10 each then im rich! lol
@halfbean
wow so lucky