The recent launch of PYUSD stablecoin by PayPal has raised concerns in the cryptocurrency community about centralization. Cryptocurrency experts who have studied the underlying smart contracts of PYUSD have found that the new stablecoin is actually written in a "very old" version of Solidity. Solidity is the most commonly used programming language for Ethereum, the world's second-largest blockchain.
It is reported that PYUSD is specifically written in version 0.4.24, which is expensive for end-users and does not comply with current industry practices. Other centralization issues include PayPal's ability to suspend all transfers, freeze addresses and funds, and even arbitrarily increase the total supply of stablecoins.
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