Our project addresses several key needs within the tech ecosystem by providing a comprehensive solution for tracking and labeling cryptographic precompiles in smart contracts. By analyzing the usage patterns of popular cryptography techniques such as Groth16 or Plonk, we efficiently label contracts, enabling easier identification and classification based on their cryptographic functionalities. This addresses the challenge of accurately categorizing and understanding the purpose of smart contracts within the ecosystem.  Additionally, we contribute to filling the gap in contract identification by constructing our version of the 4bytes directory directly from contract source code. This approach ensures coverage of missing selectors, enhancing the accuracy and completeness of contract labeling.  Moreover, our manual labeling process assigns contracts to specific application groups (e.g., bridge, L2) and protocol names, further enhancing their categorization and facilitating their integration into various applicat