You might be hearing the word stablecoins a lot. Yet it's not easy to understand how they differ from bitcoin and other cryptocurrencies. The original purpose of stablecoins was to use them as a balancing asset to volatile cryptocurrencies, and thus most of these coins are designed to minimize their volatility. The majority of the early stablecoins derive their value from a national currency, often the U.S. dollar (USD). The contemporary market has been evolving in the direction of commodity-backed stablecoins and complicated fractional-reserve stablecoins. What are Stablecoins: Market Abstract The growth of this market has been closely aligned with growing cryptocurrency and blockchain markets. In early 2021, the total market capitalization of stablecoins ascended to 38,46 U.S. dollars and a total 24h daily volume into $90,9 billion. Tether (USDT) is arguably the most well-known stablecoin, yet it\u2019s also one of the most controversial ones. Tether\u2019s history dates back to 2014. Since then, the industry has scaled up significantly in a more diversified direction. One can segment the stablecoin market into currency-backed stablecoins, commodity-backed stablecoins, and algorithmic stablecoins. Let\u2019s explore these segments in detail. Currency-Backed Stablecoins Stablecoins backed by national currencies, or fiat currencies, form the biggest stablecoin segment by market capitalization. A third-party financial entity is what backs the value of these coins. In that case, the issuer forms an essential relationship with the custodian of the backed asset. People can trade stablecoins backed by national currencies on exchanges and, optionally, redeem them from the issuer. Tether (USDT) Tether (USDT) is probably the most well-known stablecoin, and the U.S. dollar reserves back it. Recently Tether announced its stablecoin to be backed by \u201ca reserve of U.S. dollars and other assets, including traditional currency and cash equivalents and other assets and receivables from loans.\u201d Meanwhile, Tether has faced accusations related to alleged insufficient reserves. In addition, Tether\u2019s parent company iFinex is currently under scrutiny by U.S. authorities. Nevertheless, Tether has continued to grow exponentially and is currently worth above 26,3 billion dollars. Tether contemporarily uses multiple blockchains, including original Omni, Ethereum (ETH), and Tron (TRX). Ethereum-based Tether holds most of the value in market capitalization. However, Tron-based USDT bypassed Ethereum in terms of daily active addresses during early 2021. Despite Tether's regulatory challenges, many industry specialists forecast a good future for USDT. Nic Carter recently commented on the alleged link between Tether issuance and bitcoin\u2019s price. Above all, Carter sees stablecoins as an inherent part of the ecosystem and denies the relation between Tether\u2019s circulating supply and bitcoin\u2019s price performance. \u201cTether and other stablecoins are just a proxy for the balance sheets of trading firms and crypto-native institutions. Crypto-native firms grow as the underlying assets grow.\u201d - Nic Carter USD Coin (USDC) USD Coin (USDC) fits into the same currency-backed category as Tether (USDT). At the same time, USDC is contemporarily the second-largest stablecoin in the market. We see that if we use market capitalization as a metric. USD Coin\u2019s role is closely aligned with Tether. However, it has found its economic moat as the more regulatorily compliant stablecoin. USDC\u2019s current market cap is \u20ac5,8 billion, around 22% of Tether\u2019s market cap. Should the regulatory concerns around Tether escalate, USD Coin might see incremental growth at Tether's expense. Commodity-Backed Coins Stablecoins backed by commodities, like gold, have seen escalating growth during recent years. Physical gold shares many features with bitcoin, both were mainly designed to be scarce, and both are a good hedge against inflation. The deflationary characteristic of gold ensures its long-term value potential. Two rival stablecoins dominate the gold-backed stablecoin market: PAX Gold (PAXG) and Tether Gold (XAUT). Both stablecoins allow for exposure to gold markets without using an ETF, futures contract, or other derivative product. Both issuers store their gold reserves in a secure third-party location, and clients' assets can be redeemed easily. But PAX Gold bypassed Tether Gold in terms of market capitalization; PAXG\u2019s market cap is currently $113,18 million and USDT\u2019s $88,52 million. Gold-backed stablecoins contain significant growth potential as the demand for the asset is perpetually increasing. Hence tokenizing physical gold into digital assets by blockchain technology seems to be a perfect match. Investors can purchase gold-backed digital assets with the Coinmotion private banking service. Algorithmic Stablecoins Algorithmic stablecoins offer another angle to solving stablecoin stability. Stablecoins like Frax balance the stablecoin price by counter-cyclical price adjustments: expanding the supply reduces the price and reducing the supply increases the price, vice versa. Frax is the first fractional-algorithmic stablecoin protocol currently implemented in the Ethereum (ETH) ecosystem. Frax plans to be a highly scalable, decentralized, algorithmic money in place of fixed-supply digital assets like bitcoin. Frax consists of three tokens. They are FRAX (stablecoin), Frax Shares (governance and value-accrual token), and Frax Bonds (debt financing token). Frax\u2019s founder Sam Kazemian stated the project plans to be \u201cthe bitcoin of algo stablecoins.\u201d Therefore, Frax will provide liquidity for decentralized finance as an algorithmically stabilized and unbacked asset.