Known for its wallet and its own blockchain explorer, BTC, it has been around for a while, before opening a group in 2016. Owned by Bitmain Tech, BTC is the largest group.
It has its own payment method, FPPS, which similar to PPS + includes TX fees on payments, along with the block reward.
Regarding mining fees, BTC charges 1.5% and has a payment threshold of 0.001 BTC.
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