Bitcoin Gold is a distributed digital currency. It is a hard fork of Bitcoin, the open source cryptocurrency. The stated purpose of the hard fork is to restore the mining functionality with common Graphics Processing Units (GPU), in place of mining with specialized ASIC (customized chipsets), used to mine Bitcoin.
A central part of the bitcoin process, mining, is being controlled by a few manufacturers who sell their products to a select group of industrialized miners, centralizing the mining task and breaking with one of the core values of bitcoin – decentralization. ASIC resistant GPU powered mining provides a solution, as this kind of hardware is ubiquitous, and anyone can start mining with a standard, off-the-shelf laptop computer.
Bitcoin Gold was hit by double-spending attack on May 18th, 2018.
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