{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the semantics of transaction execution in a blockchain?","a":"The transaction execution in blockchain has the following semantics: in a decentralized distributed system, the transaction execution process ensures data security and consistency through a series of consensus algorithms. Transactions are arranged in sequence to form blocks, and cryptographic technology is used to ensure that data cannot be tampered with. Each block contains a certain number of transactions; once  a block is added to the blockchain, the transactions are considered executed. This semantics enables the blockchain system to have high security, transparency, and traceability characteristics."}]}],"pr":"eb13bcebb6edc0b2283d26396aaa491828e7361bea52ba89b11885968a6f19dc"}