> Litecoin, zCash, Monero and most of the others are bitcoin forks. Nope. All of these are derivatives of Bitcoin, but none of them are forks. A fork, by defin

> Litecoin, zCash, Monero and most of the others are bitcoin forks. Nope. All of these are derivatives of Bitcoin, but none of them are forks. A fork, by definition, shares a genesis block with the parent currency. This is in contrast to a "client fork", where the Bitcoin codebase was modified to create a new blockchain with or without changes in protocol. Most forks of Bitcoin have been intentional, and the "lesser" chain has died on purpose. Off the top of my head, existing forks are: BitcoinXT: created in late 2014, it allowed 8MB blocks instead of the 1MB limit for Bitcoin. As of mid-2016, it died due to lack of miner support. Bitcoin Classic: created in early 2016, it allowed 2MB blocks. It was effectively dead as of early 2017. Bitcoin Cash (a/k/a BCash, BCH): created in August 2017. It eschewed SegWit, and increased block size to 8MB. It's not dead yet and seems to have a base level of support both in terms of miners and in terms of price. I expect that it will die eventually... but who knows. It is by far the best-supported Bitcoin fork, and there are many who believe that it's the "real Bitcoin" in the sense that it conforms more closely to the original whitepaper. There are a couple of other forks planned in the near future as well.