Orphan

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

Output

A grouping of addresses that receive coins in a cryptocurrency transaction.

Outgoing Connection

The initiator of communication on a cryptocurrency network.

Opsec

Operations Security. Refers to how well assets are protected.

Oracle

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

Off Blockchain Transactions

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

OTC Exchange

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

Open Source

A term used to describe software that is made available onlineĀ so that any individual can view its code and submit improvements.

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.

text