You can get free coins with random probability. It’s just free.

ProbabilityBitcoin reward
60.00%BTC 0.00000009
30.00%BTC 0.00000022
6.00%BTC 0.00000077
2.00%BTC 0.00000155
1.70%BTC 0.00000233
0.29%BTC 0.00009999
0.01%BTC 0.00059999
You can claim again in: