BNB Chain has officially deployed new infrastructure to identify and verify autonomous AI agents on its Mainnet and Testnet. The deployment includes two key standards: ERC-8004, an on-chain identity protocol, and BAP-578, which introduces Non-Fungible Agents (NFAs). This development, announced on February 4th, 2026, aims to create a foundation for a "trustless" and scalable agent economy where software can operate independently with verifiable reputations.
The ERC-8004 standard acts as a "passport" and "credit score" for AI agents. It establishes three core registries on the blockchain. The Identity Registry assigns each agent a unique, verifiable ERC-721 token (NFT) ID, preventing impersonation. The Reputation Registry maintains an immutable, permanent record of an agent's performance and feedback. The Validation Registry allows users to cryptographically verify an agent's work using technologies like zero-knowledge proofs (zk-proofs) or Trusted Execution Environments (TEEs). This structure allows AI agents to carry a persistent, portable identity and reputation across different platforms and applications.
Complementing this is BAP-578, the first BNB Application Proposal (BAP), which defines the Non-Fungible Agent (NFA) standard. An NFA is an on-chain asset that can own its own digital wallet, hold funds (including cryptocurrencies), execute logic, and interact with smart contracts. This enables AI agents to autonomously pay for services—for example, booking travel using its own wallet—and creates a system for software-to-software commerce.
BNB Chain positions itself as an ideal platform for this agent economy due to its low transaction fees and high speed on both BNB Smart Chain (BSC) and its Layer-2 solution, opBNB. The ecosystem also includes BNB Greenfield for decentralized storage. The move aligns with broader industry trends, as noted by mentions of Fingerprint's work with OpenAI and AWS on agent detection, and protocols like x402 (highlighted by Coinbase and Cloudflare) for agent payments using stablecoins.
