First, smart contracts cannot be 100% secure, even if you understand the contract code or have undergone numerous audits. Therefore, we need to determine whether they are relatively secure. Open source is the foundation of smart contracts. As long as they are on the blockchain, we can view them in real time. Audited by a professional auditing firm and with publicly available audit reports, their security is guaranteed. The blockchain is like a dark forest. A smart contract already holds numer...