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XPM is a peer-to-peer open source cryptocurrency that implements a unique scientific computing proof-of-work system. This entity is also related with the cryptocurrency Peercoin. Primecoin has been described [ by whom? When comparing Primecoin with today's most widely spread cryptocurrency called bitcoin some notable differences are:.
Primecoin uses the finding of prime chains composed of Cunningham chains and bi-twin chains for proof-of-work, which can lead to useful byproducts. The system is designed so that the work is efficiently verifiable by all nodes on the Primecoin network. Other cryptocurrencies including bitcoin commonly use a Hashcash type of proof-of-work based on SHA hash calculations, which are of no value beyond its own economy.
List of largest known Cunningham chains of given length  includes several results generated by Primecoin miners. From Wikipedia, the free encyclopedia. Archived from the original PDF on Proof-of-authority Proof-of-space Proof-of-stake proof-of-work. Dogecoin Gulden Litecoin PotCoin. Dash Decred Primecoin Auroracoin. IO Gridcoin Nxt Waves. Anonymous Internet banking Bitcoin network Complementary currency Crypto-anarchism Cryptocurrency exchange Digital currency Double-spending Electronic money Initial coin offering Airdrop Virtual currency.
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None, the primecoin peer-to-peer network regulates and distributes through consensus in protocol. Limited release, production rate before this limit re-evaluated with the production of every block at a rate of approximately 1 block per minute based on the difficulty with which primecoins are produced.