a16z stated: Blockchain is the key infrastructure for trust in the internet during the AI era

The a16z crypto team pointed out that as AI systems scale, the internet lacks a native way to distinguish between humans and machines, and the trust system faces challenges. Blockchain technology can provide solutions. The article summarizes the following five key roles:

• Increase the cost of AI impersonation: By using decentralized human verification systems (such as World ID), the scale of false identity generation is limited, raising the cost of attacks.

• Decentralized identity verification: Blockchain gives users control over their own identities, avoiding single points of failure in centralized identity systems while protecting privacy and resisting censorship.

• Create a universal "passport": A blockchain-based identity layer allows AI agents to operate across platforms, carrying permissions and payment information, enhancing interoperability and preventing lock-in effects.

• Support machine-scale payments: Utilizing blockchain micropayments and smart contracts enables low-cost, granular payment distribution, supporting economic activities between machines.

• Enhance privacy protection: Through zero-knowledge proofs, users can verify their identity without exposing specific data, preventing AI from misusing information for impersonation.

a16z believes that blockchain is a necessary infrastructure for building an AI-native internet, capable of restoring trust and supporting the healthy development of AI systems.