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The SONM (SNM) project was released in 2017. Cryptocurrency pairs with the SNM token are represented on the number of exchanges. SONM is currently based on cryptocurrency Ethereum protocol.
TRON is a blockchain-based entertainment platform with its native token TRX. The mainnet was launched in 2018. The platform is supposed to be a cheap way to consume entertainment content and easily share it. TRON is capable of hosting entertainment content and DApps.
USD Coin (USDC) is a stablecoin pegged to the US dollar (1 USD Coin = $1). This currency was founded in 2018 by the American company Centre Consortium associated with Coinbase and Circle. The support of the experienced team helped this project to reach high positions by its market capitalization (USDC is one of the top 30 cryptocurrencies).
Each USDC is backed by one US dollar held by the company in a bank account. As USDC is an Ethereum-based token, it can be stored in the Ethereum-compatible wallets. The key feature of USDC is that it has the same value as USD but it requires no bank account, it doesn't charge high fees and works internationally. USDC is supported by several crypto exchanges and business enterprises.