Hashrate Manipulation

Mechanism

Hashrate manipulation refers to the strategic concentration or targeted deployment of computational power within a proof-of-work network to distort transaction ordering or block production timelines. By gaining temporary control over a significant portion of the total network capacity, an entity can facilitate double-spending attacks or disrupt the settlement of dependent financial instruments. This phenomenon undermines the underlying security assumptions of the chain, directly impacting the integrity of data recorded on the distributed ledger.
Reorg Attack A detailed cross-section reveals concentric layers of varied colors separating from a central structure.

Reorg Attack

Meaning ⎊ A hostile attempt to rewrite blockchain history by mining a longer chain to revert transactions and double spend.