On Tuesday, Feb. 4, 2020, at 02:00 UTC, Bitcoin SV completed its planned hard fork for the “Genesis” upgrade. The upgrade aims to restore the original Bitcoin protocol, including removing the block size limit. Following the upgrade, there was a minor chain split where a single miner added a block to the old chain.
Why it matters:
The chain split was caused by one miner who likely forgot to upgrade their software to Genesis.
A single block addition on the minority is not a large issue considering PoW chains follow the longest chain with the most proof-of-work consensus rule (Nakamoto Consensus).