{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Blockchain has several security features, including:\n\n1. Decentralization: Blockchain technology is distributed across a network of computers, which means that there is no single point of failure or control. This reduces the risk of hacking or manipulation by a malicious actor.\n\n2. Immutability: Once information is recorded on the blockchain, it cannot be altered or deleted. This is because each block in the chain contains a hash of the previous block, making it impossible to modify a previous block without altering the hash of that block and all subsequent blocks.\n\n3. Cryptography: Blockchain uses cryptographic algorithms to secure the data stored on it. The most famous example is the encryption of Bitcoin transactions, which uses public-key cryptography to ensure that only the intended recipient can access the funds.\n\n4. Consensus mechanism: Blockchain networks operate on a consensus mechanism, which ensures that all participants agree on the validity of transactions and blocks. This prevents fraud","a":"Difficult to tamper with data: Each block contains the hash value of the previous block, forming a chain structure. To tamper with the  data in a certain block, one needs to modify all the blocks that follow it because they all depend on the previous blocks. This chain structure makes it very difficult to tamper with data."}]}],"pr":"b74d42f73a6741e22277c77bacba402817ae677827a2ca7e64f6e8a82359c80e"}