#### 1. Data security

In artificial intelligence applications, data is a very important resource. However, traditional data storage methods have many security problems, such as data leakage, tampering, etc. Blockchain technology can provide a more secure and reliable data storage method. Through decentralization, distributed storage and encryption, blockchain can ensure that data is not tampered with or stolen.

#### 2. Data Sharing

In artificial intelligence applications, data sharing is also very important. However, there are many limitations and obstacles in traditional data sharing methods. For example, when sharing data across institutions, issues such as privacy protection and legal compliance need to be taken into account. Blockchain technology can provide a more flexible and secure data sharing method. Through mechanisms such as smart contracts, blockchain can achieve refined management of data access rights and usage rules.

#### 3. Model training

During the training of artificial intelligence models, a large amount of computing resources and storage space are required. However, there are many limitations and bottlenecks in traditional computing and storage methods. Blockchain technology can provide more efficient and scalable computing and storage methods. Through mechanisms such as distributed computing and storage, blockchain can optimize and accelerate the model training process.

#### 4. Smart Contract

In artificial intelligence applications, smart contracts are also very important. A smart contract is an automatically executed program code that can automatically manage data access, sharing, exchange and other operations. Blockchain technology can provide a more secure and reliable smart contract mechanism. Through decentralization and immutability, blockchain can ensure the security and reliability of smart contracts.

> Summary: Blockchain technology plays an increasingly important role in artificial intelligence. By providing more secure, flexible, efficient and reliable data storage, sharing, model training and smart contracts, blockchain technology provides a broader space for artificial intelligence applications. In the future, with the continuous development of blockchain technology and artificial intelligence technology, there will be more integration and innovation between the two.