BTQ blockchain startup has lately come up with an idea of making cryptocurrency mining more energy-efficient with the use of quantum technology. The approach basically aims to replace traditional Proof of Work (PoW) system that powers Bitcoin and is often criticized for high energy consumption.

Proof of Work is a process for computers to solve complex mathematical problems and hence verify transactions on the Bitcoin network. The process requires enormous computing power as well as energy and hence is always debated about its sustainability.

BTQ proposes an alternative method called Coarse-Grained Boson Sampling (CGBS). The system uses quantum technology through particles of light that is known as bosons to create unique patterns. The patterns serve as a new way to verify blockchain transactions and not by using traditional hash-based puzzles. The random sampling of patterns forms encryption in a manner similar to the way classical computers generate encryption by using random numbers.

Boson-sampling was originally developed to showcase quantum supremacy which is a point where quantum computers outperform classical computers in solving complex equations. The method of BTQ groups the samples into categories and make it easier to confirm transactions amid consuming comparatively less energy.

Switching to the quantum-based system would require a massive shift in the infrastructure of Bitcoin. Miners now need to replace their specialized hardware with quantum-ready machines that would be a significant challenge. Such a change could lead to a split in the Bitcoin network and similar to the past disagreements in cryptocurrency community like the Blocksize Wars.

The proposal of BTQ is still in the theoretical stage even though it is believed to have immense benefits. Implementing would require widespread agreement among Bitcoin miners and developers apart from significant advancements in quantum computing technology.