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What Selfish Mining Is and the Exact Conditions Under Which It Becomes Profitable
Bitcoin’s security model relies on a simple assumption: miners will immediately broadcast any valid block they discover to the rest of the network. This allows all participants to work on the same version of the blockchain and ensures that mining rewards are distributed roughly in proportion to each miner’s computational power. Selfish mining challenges this assumption. Instead of publishing blocks as soon as they are found, a miner or mining pool intentionally withholds them and reveals them strategically to gain an advantage over honest miners. The attack was first formally described in 2013 and demonstrated ... (full story)