Dark Web

A portion of internet content existing on darknets, not indexed by search engines, that can only be accessed with specific software, configurations or authorizations.

Date of Launch

Is a term used for when ICOs will put up their tokens for sale.

Dead Cat Bounce

A temporary recovery in prices after a huge decrease.

Decentralized

Decentralization refers to the property of a system in which nodes or actors work in concert in a distributed fashion to achieve a global goal.

Decentralized Applications (dApps)

A type of application that runs on a decentralized network, avoiding a single point of failure.

Decentralized Autonomous Initial Coin Offerings (DAICO)

A method for decentralized funding of projects, combining ideas from Decentralized Autonomous Organizations (DAOs) and Initial Coin Offerings (ICOs), proposed by Vitalik Buterin, creator of Ethereum. It introduces a form of governance in the ICO process, allowing backers to vote for the return of their funds if certain conditions are met.

Decentralized Autonomous Organizations (DAO)

An organization that is run through rules encoded in smart contracts.

Decentralized Exchange (DEX)

A peer-to-peer exchange that allows users to buy and sell cryptocurrency and other assets without a central intermediary involved.

Decryption

The process of transforming data that has been rendered unreadable through encryption back to its unencrypted form.

Deflation

Reduction of the general level of prices in an economy. May also refer to deflationary monetary policy, such as Bitcoin, where there is a fixed supply of coins.

Delegated Proof-of-Stake (DPOS)

A consensus mechanism where users can vote for delegates producing blocks on the blockchain, with votes proportional to their stake. It aims to increase efficiency and environmental friendliness of blockchain consensus protocols.

Depth Chart

A graph that plots the requests to buy (bids) and the requests to sell (asks) on a chart, based on limit orders. The chart shows the point at which the market is most likely to accept a transaction.

Derivative

A contract deriving its value from the performance of an underlying asset, index, or interest rate.

Derivatives Market

A public market for derivatives, instruments such as futures contracts or options, which are derived from other forms of cryptocurrency assets.

Deterministic Wallet

A type of wallet that derives keys from a starting point called a seed. As long as you have this seed, you are able to backup and restore any wallet.

Difficulty

A relative measure of how difficult it is to discover a new block. In Bitcoin, the difficulty is adjusted periodically as a function of how much hashing power has been deployed by the network of miners.

Digital Commodity

An intangible asset that is transferred electronically, and has a certain value.

Digital Currency

Digital currency, also known as digital money or electronic money or electronic currency, is a type of currency available only in digital form, allowing for instantaneous transactions and borderless transfer-of-ownership.

Digital Identity

Digital representations and storage of personal information such as name, address, social security number, and more; on the blockchain, digital identity can be decentralized and used for identity verification in a secure manner.

Digital Signature

A digital code generated by key encryption that is attached to an electronically transmitted document to verify its contents and the sender’s identity.

Dildo

A dildo is a long green or red bar found on a graph showing the changes in price of a cryptocurrency, in relation to the green and red candles found on price charts.

Directed Acyclic Graph (DAG)

A directed acyclic graph or DAG is a structure that is built out in one single direction and in such a way that it never repeats.

Distributed Consensus

Collective agreement by various computers in a network enabling it to work in a decentralized manner without a central authority.

Distributed Denial of Service (DDoS) Attack

A cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable, disrupting services of a host connected to the Internet, by overloading the system with requests so that legitimate requests cannot be served.

Distributed Ledger

Distributed ledgers are ledgers in which data is stored across a network of decentralized nodes. A distributed ledger does not necessarily involve a cryptocurrency and may be permissioned and private.

Distributed Ledger Technology (DLT)

The technology underlying distributed ledgers. This term is most often discussed in the context of enterprise use cases around adoption of distributed ledger technology.

Distributed Network

A type of network where processing power and data are spread over the nodes without a centralized data center or authority.

Dolphin

A person who owns a moderate quantity of cryptocurrency. This person does not qualify to be a whale, but has evolved from being a fish/minnow.

Dominance

Also known as BTC Dominance for Bitcoin Dominance, it is an index that compares the market capitalization of Bitcoin with the overall market cap of all other cryptocurrencies in existence.

Double Spending

A situation where a sum of money is (illegitimately) spent more than once.

Dump

To sell off all your coins.

Dumping

The action of collective market sell-offs, creating downward price movement.

Dust Transactions

Minuscule transactions that flood and slow the network, usually deliberately created by people looking to disrupt it.

DYOR

Age-old adage: “Do Your Own Research”. Don’t just take people at their word.