{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the PDA for compressed NFTs in blockchain implement cross-program calling?","a":"In blockchain, the main approach to achieving cross-program calls for compressed non-fungible tokens (NFT) proof-of-random assignment (PDA) relies on smart contracts and cross-chain technologies. First, by writing smart contracts with specific functions, data transmission and interaction between different programs can be realized. Secondly, utilizing cross-chain technologies such as distributed ledger technology (DLT) or sidechains enables communication between different blockchain networks. Additionally, using oracle or Oracle services ensures the security and reliability of cross-program calls. In the specific implementation process, developers need to define  clear interfaces and parameters in the smart contracts."}]}],"pr":"9fae1353e1300c9eaed61f2f3fb3962fc86b87889ceb7fe999a4a6e97c9f6616"}