Proof Of Print develops 3D printing components that combine additive manufacturing with Bitcoin mining. Its approach replaces conventional heaters with application-specific integrated circuit (ASIC) mining chips, allowing equipment to produce useful heat while generating Bitcoin rewards. The company aims to help users offset operating costs by making productive use of energy their processes already require, without changing established workflows or compromising temperature control and print quality.

Proof Of Print’s near-term product is a mining filament dryer, designed to keep 3D printing material dry while operating at a steady temperature. Its working prototype is rated at 140 watts and 6 TH/s, with capacity for two spools. The company is developing this standalone product as a route to commercial deployment and a way to validate its thermal and mining technology.

Its longer-term platform is a mining printer that integrates ASIC hardware into additive manufacturing systems, including bed heating. A technology-validation prototype has demonstrated bed temperature control at 75°C using four BM1362AK chips and Klipper integration.