A flaw in Go Ethereum, used to verify transactions, has been fixed after it caused about half of the Ethereum ecosystem to split into a separate chain (Kartikay Mehrotra/Bloomberg)

Kartikay Mehrotra / Bloomberg:
A flaw in Go Ethereum, used to verify transactions, has been fixed after it caused about half of the Ethereum ecosystem to split into a separate chain  —  - Ethereum blockchain was divided by mistake in client software  — Network patch swiftly stabilized the blockchain system