Jinse Finance reported that this week, Bitcoin Core developers mistakenly claimed that nearly 40% of Knots nodes—Core's largest competitor—were double-counted, creating a false impression of its actual scale being exaggerated. They cited technical criticism of the number of reachable Knots nodes, alleging (before many posts were deleted) that as many as 39% of nodes (1,758 out of 4,468) were double-counted due to so-called "Sybil attacks," thus "artificially inflating the number of Knots users." For context, the two most popular Bitcoin node software versions currently are: Bitcoin Core (dominating approximately 80-88%) and Knots (holding about 12-19% share). The specific percentages depend on the estimation method.