EtherZero, abbreviated ETZ, is a hard fork on ethereum providing no-fee, high expansibility, real-time transaction or operation feedback services. Aiming to be a general-purpose smart contract platform, ETZ helps developers set up DAPPs that not limited in finance and business scope, but those more frequently used in daily life, to popularize decentralized services to more people and industries. ETZ eliminates the gas fee system from Ethereum network core and adds a Transaction Restriction Policy Protocol layer that associates the threshold, frequency, depth, etc. of initiating transactions with the account balance to combat DDOS like attacks. In particular, ETZ also draws on DASH's two-tier network architecture built with Masternodes transaction verification network and blockchain ledger layer, and its built-in community autonomous system to provide users with real-time operation feedback and high transaction concurrency, no longer need to wait for a long transaction confirmation time. ETZ picks the proven experience of Ethereum on smart contracts, removes its less scalability gas-based fee system and designs a fully accountable trading limit and security strategy against DDOS Class attacks. The final two-tier network composed of the main node and pow consensus layer laid the foundation to achieve free of charge, high concurrency, real-time transactions, independent evolution and several other features. What does no-fee mean to DApp Dev? Taking a simple Todolist DApp as an example, its decentralized implementation can be applied to the team task decomposition process, which requires all participants in the project to know the tasks of other members. Each task is a team consensus result with demand of traceability. The application involves registration of members, additions, deletions and alterations of tasks. According to Ethereum development requirements, all of these operations require gas consumption, which is clearly unreasonable for the users of the application. While in EtherZero, the transaction initiation frequency and the execution depth of smart contracts will be positively related to the balance possessed by the account. This mechanism is similar to POS, it takes into account the fair use of bandwidth and set a relatively high capital threshold required to launch a DDOS attack by malicious attackers while providing free services. This kind of limited and cost-effective free mechanism will spread the decentralized application into the scene of life.
PIVX stands for Private Instant Verified Transaction. PIVX is an MIT licensed anonymity-based cryptocurrency created out of a fork of DASH. PIVX is an open source blockchain-based Proof of Stake cryptocurrency with Zerocoin protocol implementation for industry leading transaction privacy. PIVX project is focused on advancing its privacy technology to ensure fungibility, improve network scalability and increase real-world utilization to become an effective decentralized online digital currency for everyone. PIVX inherited all the technical features of DASH such as masternodes, instant send and private transfer. It has a block time of 60 seconds and has a fixed reward size per block that uses a custom Seesaw Algorithm that dynamically alters the reward split between masternode and staking nodes. PIVX also utilizes a decentralized network of masternodes that allow feature services, treasury management, and community governance. The project is focused on advancing its privacy technology to ensure fungibility, improving network scalability, and increasing real-world utilization to become a globally-accepted decentralized online digital currency. PIVX is the first cryptocurrency to implement a directly spendable Zerocoin protocol and has also developed and implemented an industry-first Zerocoin-capable Proof of Stake consensus algorithm, called zPoS, that allows complete privacy of the balance and transactions while staking. PIVX “wallet” software closely resembles running your own bank, while basecoin (PIV) for transparent transactions and Zerocoin (zPIV) for completely anonymous, untraceable transactions. PIVX is an advanced privacy-enabled proof-of-stake cryptocurrency using the Zerocoin Protocol, an advanced zero-knowledge-proof privacy protocol for utmost transaction anonymity, and zPoS, a world’s first privacy-enabled Proof of Stake technology all developed by a team of highly experienced developers and cryptographers. Here at PIVX, we wanted to do something innovative, so we brought this cutting-edge technology to life. PIVX is available to be purchased directly with some popular fiat currencies. Here are some exchanges that provide the option to buy PIVX with currencies (USD, EUR etc.) UpBit, Coinroom, LiteBit. The PIVX network allows for 2.6 million PIVX tokens to be minted per year forever, with 90% of the minted coins going to staking wallets and Masternodes (staking is covered in the next section), and 10% going to fund budget proposals voted on by the Masternodes and stakers. This lack of a maximum coin supply makes PIVX function similar to a traditional currency, as inflation is introduced to the system to encourage daily usage and avoid hoarding. The inflation is around 4% per year, but instead of simply devaluing your currency like the Fed does when it prints Dollars, all those minted coins are going directly to holders of PIVX, offsetting the effect of inflation by spreading the profits. PIVX is a promising privacy coin aiming to be an easy-to-use digital cash replacement. There have been a few hiccups surrounding the implementation of the privacy technology, but the community and development team are active, engaged, and optimistic. It’s performing well on the market, with high volume and support from major exchanges (most notably Bittrex) and looks like it’ll be around for a while.'