{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The core principle of blockchain technology is decentralization. It is a distributed database that records transactions in a continuous and tamper-proof manner, utilizing cryptography to ensure the security and integrity of the data. The blockchain consists of a chain of blocks, with each block containing information about the previous block, creating a tamper-proof ledger that is transparent and secure. This technology eliminates the need for centralized controllers or intermediaries, allowing for peer-to-peer transactions without the need for third-party involvement.","a":"Immutable data: Each block contains the hash value of  the previous block, forming a chain structure. Once the data in a block is changed, it will cause the hash value of the subsequent blocks to change, rendering the entire chain invalid. Therefore, to tamper with the data on a blockchain, one must simultaneously tamper with all related blocks and obtain more than half of the total computing power of the network."}]}],"pr":"51ab6a47fd760b21c6f4e8df7f50e1288395354d3a251ce80e3c0a24260743a6"}