If Bitcoin participants want to change parameters of the system, this can be done by consensus of those on the network. Any rule change which is backwards-compatible is known as a soft fork. A backwards-incompatible change is known as a hard fork, which creates two different blockchains diverging at a single block. The most popular cryptocurrency based on the White Paper and Genesis Block is Bitcoin (BTC). Further hard forks have created the cryptocurrencies Bitcoin Cash (BCH), and Bitcoin Satoshi Vision (BSV).