{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is transaction data stored and managed in blockchain nodes?","a":"The storage and management of transaction data in blockchain nodes is carried out in a decentralized manner. Firstly, blockchain adopts a data structure called blocks, each of which contains a certain number of transaction records. When a block is filled up, miners will package it and send it to all nodes in the network for verification. Once the verification is passed, the block will be added to the end of the blockchain, forming a continuously growing chain.\n\nIn this process, each block contains the hash value of the previous block, forming a chain structure. This structure ensures the immutability of the blockchain, as any attempt to tamper with the data of a certain block will cause the  hash value of the block to change, making it impossible for the block to be verified by the nodes in the network."}]}],"pr":"6062ba099b908b9d5b845ad01b2c06dd3016515b9800e6071bf80e4221489976"}