Peercoin (PPC) is an early cryptocurrency whose current documentation describes a hybrid consensus design: proof of work (PoW) helps distribute new coins, while proof of stake (PoS) is used to secure the chain. Its 2012 paper formalized a PoS design using coin age, but Peercoin should not be described as the sole origin of every proof-of-stake idea. In 2026, a proposal to discontinue PoW was still marked “proposed,” not an implemented change.
| Stat | Value |
|---|---|
| Ticker | PPC |
| Price | $0.4239 |
| Market Cap | $12.928M |
| 24h Change | +22.2% |
| Circulating Supply | 30.5M PPC |
| Max Supply | No fixed maximum listed |
| All-Time High | $9.45 |
CoinGecko snapshot checked October 24, 2026. Price, market capitalization, and 24-hour change are refreshed dynamically; supply and all-time-high figures are point-in-time reference data.
How Peercoin’s Consensus Works
Peercoin’s documentation says PoW is used for coin distribution and PoS secures the network. In the 2012 paper by Sunny King and Scott Nadal, coin age is the amount of currency multiplied by the time it has been held; the design uses a coinstake transaction to consume that age when creating a PoS block. These are Peercoin’s documented mechanisms, not a general description of how every modern proof-of-stake chain works.
Why the 2012 Paper Matters
The paper is an important early implementation of a hybrid PoW/PoS cryptocurrency and explains how the authors intended PoS to provide much of the network security while PoW assisted initial distribution. It also acknowledges that proof-of-stake had been discussed in Bitcoin circles before the paper. A careful history therefore distinguishes the prior concept from Peercoin’s specific design and implementation.
Current Protocol and a Proposed Change
Peercoin’s current documentation continues to describe both PoW and PoS. RFC31, started in July 2026, proposes ending PoW, but its published status is “proposed.” That proposal is evidence of an active design discussion, not proof that miners have already been removed or that the current protocol has changed. Readers checking the network should compare the current client and consensus rules with the latest accepted protocol changes.
Tokenomics and Market Context
CoinGecko’s October 24 snapshot reports about 30.5 million PPC circulating and no fixed maximum supply. Market prices and short-window percentage changes can be especially noisy when reported trading volume is small; a quoted price is not the same as the amount a holder can sell at that price. The table’s 24-hour change should be read alongside current order-book depth and market activity, rather than as a measure of network adoption.
Last updated: October 24, 2026
Related Terms
See Also
- Is Ethereum Staking Making the Network More Centralized?
- What Is Restaking — And Why EigenLayer Made It the Most Debated Idea in DeFi
- What Is Tokenomics — And Why It Determines Whether a Crypto Project Survives
- Compare crypto exchange options with ChangeNOW
Sources
- Peercoin Reference Implementation — GitHub — The project’s reference-code repository describes Peercoin as a combined PoS/PoW system, corroborating the distinction between minting mechanisms.
- PPCoin: Peer-to-Peer Crypto-Currency with Proof-of-Stake — Sunny King and Scott Nadal’s 2012 paper explains the coin-age mechanism, coinstake transactions, and the authors’ hybrid consensus design.
- RFC31: PoW Discontinuation — Peercoin Forum — The proposal’s published status is “proposed,” supporting the distinction between a suggested protocol change and current network behavior.
- Peercoin (PPC) — CoinGecko — Provides the tracked PPC price, market capitalization, supply and all-time-high data used for the dated table.