Odaily Planet Daily News PayPal recently launched the stablecoin PYUSD, which has aroused concerns about centralization in the crypto community. Cryptocurrency experts who studied the underlying smart contract of PYUSD found that the new stablecoin was actually written in an "extremely old" version of Solidity. Solidity is the most commonly used programming language for Ethereum, the world's second largest blockchain. PYUSD was reportedly written in version 0.4.24 to be precise, which is costly for end users and inconsistent with current industry practices. Other centralization issues include PayPal's ability to suspend all transfers, freeze addresses and funds, and even increase the total supply of stablecoins at will. But some cryptocurrency experts believe that PayPal's PYUSD will have a positive impact on the cryptocurrency industry. Erik Voorhees believes that the above concerns are correct for existing stablecoins such as USDT and USDC. (Coinedition)