Polkadot (DOT) is preparing to launch a new stablecoin, pUSD, through the RFC-155 proposal. The Polkadot community is championing pUSD as a key solution to unleash its DeFi potential, cut dependence on USDT/USDC, and boost ecosystem autonomy. However, some are concerned that they might repeat past mistakes. pUSD is an over-collateralized stablecoin fully backed by DOT, deployed on Asset Hub, and using the Honzon protocol developed by Acala. Acala is the former issuer of aUSD, a stablecoin project that failed disastrously.