Spruce, a decentralized identity aggregator, aims to empower users with self-sovereign identity across blockchains. However, its cross-chain compatibility faces challenges. Limited support for non-EVM chains like Solana or Bitcoin restricts seamless interoperability. Integration with diverse blockchain protocols remains incomplete, causing friction in credential sharing across ecosystems. Scalability issues arise when handling high transaction volumes on multiple chains, leading to delays or increased costs. Additionally, inconsistent DID and VC standards across networks hinder universal adoption. Security concerns persist, as cross-chain bridges Spruce relies on are vulnerable to exploits. These defects limit Spruce’s ability to deliver a truly unified, chain-agnostic identity solution, requiring enhanced protocol support, standardized frameworks, and robust bridge security to achieve its vision of decentralized identity management.