Bitcoin SV, the controversial fork of Bitcoin Cash, is facing a serious issue related to its large block sizes. Recently, the blockchain underwent a reorganization—a synchronization problem that could potentially lead to an an attack. BitMEX Research originally noticed the problem, and it revealed the news via Twitter last Thursday.
Is It An Attack?
BitMEX says that Bitcoin SV has not experienced a double spend attack. It merely suggests that “one could infer” that Bitcoin SV’s block sizes are too large and that the coin is unreliable as a payment tool. Unfortunately for Bitcoin SV, its large blocks are its major feature—in fact, they are the reason that it exists in the first place.
Elsewhere, Zak Cole of WhiteBlock Blockchain Testing has discussed the possibility of an attack on Bitcoin SV. He explains that blockchain reorganizations reduce the amount of hashing power that is required to commit an attack. Cole concludes that the reorganization is “not an attack,” but that an attack is “definitely a…