Circle is facilitating two Ethereum hard forks, Constantinople and St. Petersburg, to enhance the security and efficiency of the Ethereum network, specifically for USD Coin (USDC), an ERC-20 token. These upgrades, scheduled for February 28, 2019, temporarily increase the minimum block confirmations for USDC transactions to 300 blocks until network stability is achieved, ensuring the safety of customer funds without requiring any immediate action from them. The hard forks introduce new rules to address security vulnerabilities and optimize the network, and interested customers can find more information through Circle's support channels or monthly reserve reports by Grant Thornton LLP. Circle aims to revolutionize financial transactions by making them more accessible and efficient, contributing to global economic opportunity and prosperity.