This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Peercoin" – news · newspapers · books · scholar · JSTOR (February 2014) (Learn how and when to remove this template message)
PluralPPC, Peercoins
1100mPPC (millicoin)
11000000μPPC (microcoin)
Original author(s)Scott Nadal, Sunny King (pseudonym)
White paper"Peercoin Documentation"
Initial release12 August 2012, 17:57:38 UTC
Latest release0.11.0 /
Development statusActive
Source modelOpen source
Ledger start12 August 2012, 18:00:00 UTC
Timestamping schemeHybrid Proof-of-stake and Proof-of-work
Hash functionSHA-256
Block rewardVariable; depends on network difficulty
Block time10 minutes
Circulating supply27.5M PPC (6 April 2022)
Supply limitUnlimited
Exchange rateUS$0.67 (6 April 2022)
Market capUS$18.5M (6 April 2022)

Peercoin, also known as Peer-to-Peer Coin, PP Coin, or PPC is a cryptocurrency utilizing both proof-of-stake and proof-of-work systems.[1]


Peercoin is based on an August 2012 paper which listed the authors as Scott Nadal and Sunny King. King, who also created Primecoin, is a pseudonym.[2] Peercoin was the first implementation of a proof-of-stake–based cryptocurrency.[3]

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


This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. (August 2020) (Learn how and when to remove this template message)

Peercoin uses both the proof-of-work and proof-of-stake algorithms. Both are used to spread the distribution of new coins. Up to 99% of all Peercoins is created with PoW. Proof-of-stake is used to secure the network: The chain with longest PoS coin age wins in case of a blockchain split-up.

A transaction fee prevents spam and is burned (instead of being collected by a miner), benefiting the overall network.

To recover from lost coins and to discourage hoarding, the currency supply targets growth at 1% per year in the long run.


  1. ^ "Wary of Bitcoin? A guide to some other cryptocurrencies". Arstechnica. 2013-05-11.
  2. ^ Popper, Nathaniel (24 November 2013). "In Bitcoin's orbit: Rival virtual currencies vie for acceptance". The New York Times. Retrieved 25 February 2014.
  3. ^ Saleh, Fahad (2021-03-01). "Blockchain without Waste: Proof-of-Stake". The Review of Financial Studies. 34 (3): 1156–1190. doi:10.1093/rfs/hhaa075. ISSN 0893-9454.