Sperax USD (USDs) is a stablecoin which generates auto-yield natively. Currently, USDs is live on Arbitrum, the largest Layer-2 Ecosystem of Ethereum. Eventually, Sperax will build a system of interoperability so that USDs will be natively deployed to all major blockchain platforms.

**The highlights of USDS protocol:**

**Auto-yield.**
Users holding USDs in their wallets automatically earn organic yield. Neither staking not claiming required by the end user. Users do not need to spend gas and their time calling the smart contract to claim their yield - the yield is distributed directly to the wallets of USDs holders.

**Layer2-native**
Cheaper transaction fees on Arbitrum make this protocol retail investor-friendly

**Fully Backed Model**
 USDs is 100% backed by a diversified basket of whitelisted stablecoins.

Sperax USD

Sperax USD (USDs) is a 100% collateralized stablecoin and yield automator.  

USDs is backed by on-chain collateral and generates organic yield for its holders.

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sUSD is a synthetic USD token enabled by the Synthetix protocol. It tracks the price of the US Dollar through price feeds supplied by Chainlink’s decentralized network of oracles. sUSD is integrated across the DeFi ecosystem as one of the most liquid decentralized stablecoins, including at Curve. It can be traded without slippage for other assets native to the Synthetix protocol at Kwenta or Synthetix.Exchange.

sUSD

Celo Dollar

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Fei protocol is a DeFi native algorithmic stablecoin. The aim of Fei is to propose a technological solution in a sweet spot between rigid overcollateralized decentralized stablecoin and centralised custodial stablecoins.

Fei Protocol runs on two crypto assets: FEI stablecoin and TRIBE governance token.

FEI is aimed to be a more capital efficient and fully decentralized stablecoin. The protocol uses the value it controls to maintain liquid secondary markets and earn yield for the protocol.

The project was founded in December 2020 and immediately attracted significant interest in the crypto community. It resulted in $19 million VC investment in early March 2021. Among the names that have entered this project are Andreessen Horowitz (a16z), Coinbase Ventures, Nascent and Framework Ventures.

There were some issues with the peg in the original mechanism, but through a series of governance upgrades the protocol recovered in the months following launch.

Fei v2 intends to be a major upgrade for the system and will launch in late 2021. It features 1:1 redeemability for FEI against protocol reserves, TRIBE buybacks and backstop, and algorithmic protocol controlled value management.

Fei USD

The Gemini Trust Company (Gemini) is a digital currency exchange and custodian that allows you to buy, sell and store digital assets, founded in February of 2014. The GUSD is created by the cryptocurrency exchange Gemini.

The company received approval from the New York Department of Financial Services or NYDFS to launch the stablecoin in September of 2018. The Gemini Trust Company holds USD deposits that correspond to the number of tokens that are in circulation.

When it comes to the Gemini Dollar itself, it is an ERC-20 token that is built on the Ethereum network and has smart contracts that are audited by the security company Trail of Bits Inc.

This dollar is intended to bridge the divide between traditional finance and the crypto industry, due to the fact that this specific stablecoin is completely regulated by the NYDFS.

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The Neutrino index is a decentralized financial (DeFi) platform based on the Waves blockchain. The platform rebranded its index token from USDN to XTN. Neutrino has two native tokens, XTN and NSBT.

XTN is an algorithmic crypto-collateralized indexcoin backed by three Waves Ecosystem tokens: WAVES, WX and VIRES. XTN's main function is to encourage user participation in the Neutrino by rewarding those who provide liquidity to the system.

The platform’s other token, NSBT (Neutrino System Base Token), is used for governance purposes: it allows users to make decisions about the future development of the Neutrino protocol, and it ensures the stability of collateral reserves on Neutrino’s smart contract.

New NSBT tokens are issued whenever a user locks WAVES tokens on a contract, which serves as additional backing and insures the system against a deficit. Holders can stake to earn on WAVES to XTN swap fees.

Neutrino Index

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Founded in September of 2018, Pax Dollar is a flat-collateralized stablecoin. Stablecoins are cryptocurrencies that are designed to minimize the volatility of the price of the stablecoin, relative to a certain stable asset or a basket of assets.

A stablecoin can be pegged to a cryptocurrency or flat money. In some cases, it can even be traded for commodities. Pax Dollar offers the advantage of transacting with blockchain assets through minimized price risk. The Pax Dollar tokens (USDP) are issued asERC-20 tokens on the Ethereum blockchain and are collateralized 1:1 through the USD held in Paxos-owned US bank accounts.

Pax Dollar

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USDD is a stablecoin issued by the TRON DAO Reserve. It’s pegged to the value of the US dollar and aims to provide a reliable, decentralized cryptocurrency for blockchain transactions. USDD can be used for payments, trading, staking and as a value store.

USDD is backed by a number of cryptocurrencies, including Bitcoin, Ethereum and TRON. To ensure stability and security, the reserve is over-collateralized, meaning that it holds more assets than the amount of USDD currently in circulation.

USDD

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MultiversX is a blockchain protocol that seeks to offer extremely fast transaction speeds by using sharding. The project describes itself as a technology ecosystem for the new internet, which includes fintech, decentralized finance and the Internet of Things. Its smart contracts execution platform is reportedly capable of 15,000 transactions per second, six-second latency and a $0.001 transaction cost.

MultiversX rewards the community and active participants with EGLD tokens. EGLD, or Electronic Gold, is MultiversX's native token. It acts as a store of value currency to pay for network usage. The coin also serves as a medium of exchange between platform users and validators. Users pay transaction fees in EGLD and validators provide services.

EGLD allows developers to deploy smart contracts, protocols, and dApps on the platform. It empowers participants to perform any network action. Through staking and validation rewards, as well as transaction fees, EGLD manages the MultiversX network. Plus, EGLD is endowed with the functionality of a governance token, so its holders can vote on network decisions.

MultiversX was first announced in August 2019, and its mainnet went live in July 2020.

Wrapped EGLD

TUSD is the first digital asset with live on-chain attestations by independent third-party institutions and is backed 1:1 with the U.S. dollar (USD). So far, it has been listed on more than 100 trading platforms such as Binance and Huobi and is live on 12 mainstream public chains, including Ethereum, TRON, Avalanche, BSC, Fantom, and Polygon.

TrueUSD is attested to in real-time by an independent, industry-specialized accounting firm in the U.S., to ensure the 1:1 ratio of its USD reserve to the circulating token supply and the 100% collateral rate. With the integration of Chainlink PoR, TrueUSD becomes the first USD-Backed stablecoin to secure minting and further ensure transparency and reliability. Users can access the relevant data via the official website tusd.io at any time. TUSD is granted statutory status as authorized digital currency and medium of exchange in the Commonwealth of Dominica, a country in the Caribbean, effective on October 7th 2022.