Peercoin, also known as PPC, PPCoin, or P2P coin, is the first hybrid Proof of Work (POW) and Proof of Stake (POS) cryptocurrency. It was created by Sunny King and Scott Nadal. Peercoin is based on Bitcoin, that’s why these two currencies have a lot in common.
The Proof of Stake (POS) protocol was introduced as an energy and cost efficient way to maintain networks. There is no need to amass crazy amounts of processing power to execute Proof of Stake.
Peercoin is the fourth largest minable cryptocurrency by market capitalization. As of Jul 20, 2014, Peercoin’s market cap is $30,000,000. A peer-to-peer network carries out Peercoin's transactions, balances, and issuances through the SHA-256 algorithm and the proof-of-work protocol (Peercoins are issued when a small enough hash value is found, then the block of transactions is added to the shared blockchain. Mining is the process of finding such hashes and creating blocks).
Peercoins can be traded for fiat currencies, bitcoins, and other cryptocurrencies. Peercoin transactions are irreversible which means that there is a risk of chargebacks.
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