In the realm of public chains, Polkadot ($DOT) has been striving to maintain its position above the $7 mark. The cryptocurrency began the week trading below its support level, but has since demonstrated resilience by regaining its strength. Over the past week, $DOT has seen a 4% increase, a notable achievement in the volatile crypto market. This development underscores the potential of public chains like Polkadot, which continue to attract interest and investment in the blockchain industry.