This is an ascending private auction: Proto Rig Bitcoin Miner for SHA-256 Mining Operations has already finished

Proto Rig is a high-performance SHA-256 miner for Bitcoin and Bitcoin Cash, delivering up to 819 TH/s with 12,000 W and about 14.65 J/TH. Its air cooling uses high-speed fans to ensure efficient thermal dissipation and stable operation. The unit measures 390 x 290 x 500 mm, weighs about 50 kg, runs on 208-240 V with a 16 A cable, and connects via Ethernet. It operates from -5 to 35 C and supports 5-95% humidity, making Proto Rig a strong choice for large-scale Bitcoin mining.