Learn More Bitmain Antminer – K7 Nervos Miner (63.5Th) by Bitcoin Merch® $8,541.90 The Bitmain Antminer K7, professionally refurbished by Bitcoin Merch, offers powerful Nervos (CKB) mining with a hashrate of 63.5 TH/s using the Eaglesong algorithm. Comes with a 30-day warranty.