Currently, the computing power of ghash io, the largest mining pool, is getting closer and closer to 51% of the entire Bitcoin network, a trend that has caused many concerns. Ghash io has posted an open letter (PDF) to the community promised not to launch a 51% attack. ghash io has taken steps to stop accepting new miners to reduce computing capacity growth. But the future of Bitcoin can be fully pinned on such a guarantee?
Bitcoin self-regulation mechanism from bottom to top is very efficient, there is no such guarantee does not matter, the mechanism of Bitcoin is not based on the trust of others or the central agency operation, and the mine is only a mine pool, the mine pool Itself does not grasp the real power. What is really worrying is that in the future, the makers of mining chips will only have one or two monopolies after the fierce market competition. Like Intel in the cpu field, this is a real threat. Of course, based on the interests, this is Chip companies are likely to develop an amd such competitors is in the final long-term interests, but the mining chip monopoly will always be a lingering shadow.