Bitcoin TOP (BTT) is a fork of Bitcoin that occurs at the predetermined height of block 501118 and therewith a new chain will be generated as the BTT. Bitcoin TOP miners will begin creating blocks with a new proof-of-work algorithm, and will consecutively develop and enhance the protection for account transfer and privacy based on original features of BTC. This will cause a bifurcation of the Bitcoin blockchain. The original Bitcoin blockchain will continue on unaltered, but a new branch of the blockchain will split off from the original chain. It shares the same transaction history with Bitcoin until it starts branching and coming into a unique block from which it diverges. As a result of this process, a new cryptocurrency was created which we call “Bitcoin TOP”.
When the Bitcoin TOP fork occurs at predetermined height 501118, any exchange that is holding BTC on your behalf will also receive the corresponding BTT. While they should credit your account with the equal amount of BTT, there is no legal authority that can force them to do so. The Bitcoin TOP home page will display the names and logos of exchanges that have promised to credit their users with BTT at 1:1. If your exchange is not shown, please consider transferring your BTC to a supporting exchange or withdraw to a personal wallet where you control the private keys.
please view BTT official website for more details:
www.bitcointop.org/faq.html

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