Peercoin

Peercoin, also known as PPCoin or PPC, is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.wikipedia
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Cryptocurrency

cryptocurrenciescrypto-currencyaltcoin
Peercoin, also known as PPCoin or PPC, is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.
Another notable cryptocurrency, Peercoin was the first to use a proof-of-work/proof-of-stake hybrid.

Peer-to-peer

P2Ppeer to peerpeer-to-peer network
Peercoin, also known as PPCoin or PPC, is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.
Bitcoin and alternatives such as Ether, Nxt and Peercoin are peer-to-peer-based digital cryptocurrencies.

Proof-of-stake

proof of stakeDPOS (Delegated Proof of Stake Algorithm)generates
Peercoin, also known as PPCoin or PPC, is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.
Peercoin's proof-of-stake system combines randomization with the concept of "coin age", a number derived from the product of the number of coins multiplied by the number of days the coins have been held.

Primecoin

King, who also created Primecoin, is a pseudonym.
Launched on July 7, 2013 by anonymous hacker and peercoin founder Sunny King, Primecoin was the first cryptocurrency to have a proof-of-work system with a practical use.

Proof-of-work system

proof-of-workproof of workreusable proof of work
Peercoin, also known as PPCoin or PPC, is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.

Massachusetts Institute of Technology

MITMassachusetts Institute of Technology (MIT)M.I.T.
The Peercoin source code is distributed under the MIT/X11 software license.

X Window System

X11XX Window
The Peercoin source code is distributed under the MIT/X11 software license.

PPC

BTC-e

Until the 25th of July 2017, it allowed trading between the U. S. dollar, Russian ruble and euro currencies, and the bitcoin, litecoin, namecoin, novacoin, peercoin, dash and ethereum cryptocurrencies.

FXOpen

In 2014, FXOpen launched Crypto accounts and introduced new financial instruments such as Bitcoins, Litecoins, Namecoins, and Peercoins.

Currency

currenciesforeign currencycoinage
Distinct from centrally controlled government-issued currencies, private decentralized trust networks support alternative currencies such as Bitcoin, Ethereum, Litecoin, Monero, Peercoin or Dogecoin, as well as branded currencies, for example 'obligation' based stores of value, such as quasi-regulated BarterCard, Loyalty Points (Credit Cards, Airlines) or Game-Credits (MMO games) that are based on reputation of commercial products, or highly regulated 'asset backed' 'alternative currencies' such as mobile-money schemes like MPESA (called E-Money Issuance).

Private currency

private currencieslimited means of paymentprivate
Peercoin

Daniel Kaufman (businessman)

Daniel Kaufman
He is also the founder of the cryptocurrency NeuCoin.