The Peercoin network activated in 2012 and is one of the first cryptocurrencies to ever be released. It is responsible for inventing proof-of-stake consensus, which makes it the first efficient and sustainable public blockchain technology. Peercoin was inspired by bitcoin, and it shares much of the source code and technical implementation of bitcoin. The Peercoin source code is distributed under the MIT/X11 software license. Unlike bitcoin, Namecoin, and Litecoin, Peercoin does not have a hard limit on the number of possible coins, but is designed to eventually attain an annual inflation rate of 1%. There is a deflationary aspect to Peercoin as the transaction fee of 0.01 PPC/kb paid to the network is destroyed. This feature, along with increased energy efficiency, aim to allow for greater long-term scalability. With the same encryption algorithm as Bitcoin (SHA-256), Peercoin is 100 times more energy efficient. Transactions in the Peercoin network are faster and cheaper. If there were not fierce competition on the cryptocurrency market, Peercoin would probably have long since become one of the most important cryptocurrencies. But in 2014 and 2015, however, there were many other interesting innovations in the cryptocurrency market that outperformed peercoin in a number of important properties. In contrast to DASH, Peercoin could not offer anonymity and the transactions in Dogecoin were even faster and cheaper than those of Peercoin. PoS technology ceased to be an advantage of peercoin and PoS continued to spread to other cryptocurrencies. The interest of the users drew it to the side of the minings on the CPUs and GPUs, then to the side of the Smart Contracts and PPC began to get a little forgotten. The Peercoin Team believes that adapting blockchains for wide scale use only through on-chain transactions will negatively affect the decentralization level and security of the network over time, therefore we choose to develop the Peercoin blockchain as a base layer settlement network with a sole focus on securing all forms of value recorded into the chain. This can be accomplished through Peercoin's philosophy of preserving and maximizing decentralization (which increases security) by developing the majority of features and technologies on top of the blockchain, rather than directly into the blockchain protocol itself. Thus the Peercoin Team focuses on developing second layer protocols and sub-networks that can interact with the base layer blockchain to adapt it for wide scale use and improve functionality such as tokens, smart contracts and high speed low cost transaction processing. In this way, Peercoin will act as a secure and censorship resistant base layer for the future blockchain connected world.
Syscoin is “a global network, a distributed ledger, a decentralized database and a blockchain. It is also a cryptocurrency, an altcoin, a digital currency and a tradable token.” Originally launched in late 2014 and created through a Bitcoin fork, the current version brings us to Syscoin 2.1 and has an algorithm that allows it to be merge-mined with Bitcoin. Merge mining is simply the ability for miners to simultaneously mine two different cryptocurrencies based on the same algorithm. The project attempts to remove the middleman and put money directly back into merchants/consumers hands, eliminating hefty fees currently charged by big corporations like Amazon and eBay. To facilitate near-zero fee transactions, you can use its native cryptocurrency, Syscoin (SYS), to pay for goods on the marketplace. However, you can also pay using alternate cryptocurrencies such as Bitcoin or Zcash. Syscoin is led by a team of developers and was created by its current core developer, Sebastian Schepis. According to Proof of Developer, a website that verifies, evaluates, and ranks developer teams, Syscoin received 5 stars in 2014. Blockchain Foundry maintains Syscoin as its flagship product, with a mission to “disrupt markets by leveraging the potential of blockchain technology”. In March of 2017, Blockchain Foundry partnered with the Microsoft Azure ecosystem and is one of the founding members of the Digital Identity Foundation (DIF). Other founding members of the DIF include the likes of corporate giants such as Microsoft, Accenture, ConsenSys, and more. Syscoin’s blockchain delivers faster speeds along with lower transaction fees than its predecessor, Bitcoin. It can support 750 tps, and with the upcoming masternode release, it will support more than 300,000 tps. For now, it’s one of the cheapest cryptocurrencies regarding transaction fees (behind zero-fee transaction cryptocurrencies such as NEO and NANO), even cheaper than XRP.' Some of the features highlighted on the SysCoin website includes :- 1. Buy/Selling goods on the blockchain 2. Brokerage on the blockchain 3. Issue and trade certificates on the blockchain 4. Merged Mining