A Glossary of Blockchain & DeFi Terms

Michelle Tsng
14 min readOct 9, 2020

51% Attack: A method of re-writing the blockchain by acquiring 51% of the overall hash rate. Hashing secures the blockchain. Any actor who obtains 51% of the overall hash rate, has the power to re-write the transaction ledger. This power can be used to roll back transactions, and spend them again (also known as double spend).

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