What is Bitcoin SV?
Twice a year, the Bitcoin Cash (BCH) network hard forks as part of scheduled protocol upgrades. Unlike previous BCH hard forks, there was a competing proposal that was not compatible with the published roadmap. On November 15th, both groups started creating blocks in their respective, separate blockchains. Bitcoin SV (BSV) was created as a result of that split.
When did this fork occur?
The fork occurred on November 15th, 2018, at block number #556766.