Proof of Work (PoW)
By CoinGecko | Updated on Mar 03, 2020
An algorithm that rewards the first person that solves a computational problem (i.e. mining) to achieve distributed consensus. Miners compete to solve difficult cryptographic puzzles in order to add the next block on the blockchain. It prevents spam and cyber attacks such as DDoS as it requires work (i.e. processing time) from the service requester.
Related Terms
Solidity
Object oriented programming languaged used in various smart contract blockchains.
Super Staker
A Qtum Core wallet (full node) providing Proof of Stake for delegated addresses, and keeping a small part of each block reward as their fee for providing the staking services.
Margin Call
Margin call takes place when investor's margin account falls below the required amount to stay afloat.
Ponzi Scheme
A Ponzi scheme is also referred to as pyramid scheme, and typically takes the form of an investment scheme which pays existing investors with funds collected from new investors.
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