Cryptocurrency Terms to Know Before You Invest

Here is a quick guide to cryptocurrency terms. We define technical terms, slang, acronyms, and other jargon related to cryptocurrency.



  • OFF BLOCKCHAIN TRANSACTIONS

    Transfer of value that takes place outside of a block chain for reduced fees and quicker transaction time.

  • OPSEC

    Operations Security. Refers to how well assets are protected.

  • ORACLE

    A third-party entity capable of transmitting reliable information to a block chain so that smart-contracts can be executed.

  • ORPHAN

    A block that is no longer a part of the original block chain because it was not verified by the majority of miners.

  • OTC EXCHANGE

    Over The Counter Exchange, also known as Off-Exchange Trading. Trades that occur between two parties rather than using a centralized exchange.

  • OUROBOROS

    Cardano's Proof-of-stake algorithm. It is used to randomly pick the next node to produce a block in. Ouroboros divides physical time into epochs, and then slots. Slot leaders have the sole right to produce one block and are chosen from the group of stakeholders.