Mining Rig

A mining rig is a computer used for mining cryptocurrencies. The rig might be a dedicated computer or it could be a computer that fills other needs too.


When a blockchain features several levels for scalability and encryption purposes, it can be said to be "Multi-Layered."


Metamask is a Chrome extension which allows users to store and transact Ethereum and other ERC-20 tokens.


A feature that requires several keys to authorize a single transaction, especially for dividing responsibility among separate parties.

Margin Trading

The practice of borrowing money to buy and sell assets.

Market Order

A pre-planned trade set to execute if a cryptocurrency reaches a certain price.

Market Cap

The total value of a cryptocurrency. Calculated by multiplying a coin’s price by its total supply.

Merged Mining

The process of allowing two different cryptocurrencies using the same consensus algorithm to be mined simultaneously. 

Margin Call

A trade in which an investor sells their position to repay the lender of a loan.


A very small payment made possible with digital currencies.


The version of a protocol that uses real money. A cryptocurrency is generally considered to be “live” after the first Mainnet block (the genesis block) is mined.

Mining Algorithm

A mathematical problem that is solved by participants of a blockchain to verify transactions in exchange for block rewards.


A sub-unit of Bitcoin: 1000 mBTC equal 1 BTC.

Mining Contract

An agreement that allows individuals to sell their computing power for the purposes of verifying transactions on a blockchain.


John McAfee (the creator of McAfee antivirus) is a cybersecurity mogul who is known for promoting cryptocurrency and speculating about altcoins.


The process by which users on a PoS blockchain verify transactions and receive new coins for their participation.


A series of words that can be used to recover an account or wallet.

Mixing Service

A third party that enables anonymous transactions by grouping payments together, obscuring their sources.

Miner Fee

A fee paid to voluntary participants for using their computing power to verify transactions. When a miner mines a block they get a block reward as well as all the transaction fees in it.

Mobile Wallet

Software that allows individuals to store their cryptocurrencies on handheld devices.


A cryptocurrency that is very popular on the Darknet because it is considered to be more anonymous than Bitcoin and similar coins.

Money Laundering

A method of intentionally obscuring the source of illegally-obtained funds.


A cryptocurrency meme that refers to the skyrocketing of a coin's price. When Hodlers’ coins go to the Moon, they can all buy Lambos.


A feature that requires several keys to authorize a single transaction, especially for dividing responsibility among separate parties.


An individual that volunteers computing power to verify transactions on a blockchain in exchange for block rewards.


A node (device running the full software of a cryptocurrency) that fulfills more purposes than regular nodes - such as increasing privacy, providing instant transactions, and participating in governance.


The process by which new coins are created as transactions on a network are verified.

Machine Learning

The ability of machines and computers to integrate data and learn from it without being programmed to do so.

Mining Pool

A group of people online who agree to combine their mining rigs into one for more collective mining power. They split rewards evenly based on each person's mining power.


A popular online wallet that supports Ether and most ERC20 tokens.

Mt. Gox

A cryptocurrency exchange led by Mark Karpeles that allegedly lost millions of dollars in user funds.