Decentralized Autonomous Organization. A company or other organization that operates without hierarchical management. Also may refer to a contract named “The DAO” launched on April 30, 2016, which was then hacked in June 2016; this ultimately motivated a hard fork (codenamed DAO) at block #1,192,000, which reversed the hacked DAO contract and caused Ethereum and Ethereum Classic to split into two competing systems.

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