** Please note that Segwit2x fork was cancelled due to lack of network consensus. This article is for historical reference only.
Bitcoin Segwit2x is a proposed change which is intended to improve the speed and cost of Bitcoin transactions. If the upgrade is not universally accepted, it may create two Bitcoin blockchains via a fork of the Bitcoin network.
Edit: At the time of the fork, the existing chain will be called Bitcoin and the Segwit2x for will be called Bitcoin2x. Ultimately, we will call the fork with the most accumulated difficulty Bitcoin. We will wait for a period of time after the fork, before finalizing the naming.
Each block on the bitcoin blockchain is mined with a difficulty setting, which roughly indicates how much work needs to be done to mine a block. Accumulated difficulty will be measured as the sum of the difficulty of each block mined since the fork.
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