Qubetics, Hedera, and Injective are highlighted as the best altcoins to buy this week for their real-world use cases and growth potential.Qubetics ($TICS) offers solutions for trustless cross-border payments, interoperable development environments, and modular infrastructure.Qubetics stands out for its modular Web3 aggregator and cross-border transaction engine for seamless asset movement.With over 511 million tokens sold and a 10% weekly price climb, Qubetics shows strong momentum and future potential.Hedera differentiates itself with global corporate governance, fast transaction speeds, and real-world applications like supply chain auditing.Injective focuses on decentralized finance infrastructure, enabling developers to create various applications without external dependencies.Injective's native asset $INJ plays a key role in governance and staking while keeping the protocol capital-efficient for users and developers.The shift in the crypto ecosystem towards functional platforms is evident with a focus on security, modularity, and tangible utility.Qubetics, Hedera, and Injective are positioned as leaders in providing real-world solutions and infrastructure for the Web3 future.These projects offer unique features like seamless cross-border payments, trust-backed governance, and DeFi-specific infrastructure respectively.