{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In blockchain, what is the structure of object references?","a":"In blockchain, the object reference structure mainly refers to the chain-like reference structure. The chain-like reference structure is a data structure based on  linked lists, which contains a reference pointing to the next node. This structure is used to connect different blocks in blockchain, forming a continuous and tamper-proof chain-like structure. Each block consists of two parts: block header and block body. The block header stores the hash value of the previous block and other metadata, while the block body contains all the transaction information that occurred within the block. Through the reference in the block header, we can trace back to previous blocks, forming a continuous chain-like structure. This structure ensures that"}]}],"pr":"321a339dbb988ba016ca9e4148bd1044a2477daf2c818d259f6d7f00cf2f9ca4"}