Protocol-level identity and accountability for AI agents, on any chain. Builders can start today.
AI agents are executing real transactions, managing portfolios, and making decisions that involve real money. The industry now has a standard for describing what agents do on-chain: Ethereum's ERC-8004, gives agents an identity handle, a reputation registry, and validation hooks. It answers the question of what an agent can do. It does not answer the question of who stands behind it in the real world.
That is not a flaw in the standard. ERC-8004 was designed to be permissionless. But permissionless identity without real-world accountability is not enough for the transactions agents are already executing, or for the regulated industries now evaluating whether to let agents operate on their rails.
The infrastructure to close that gap did not exist at the protocol level. Until today.
What Shipped Today
Concordium has launched the Agent Registry, the first protocol-level identity and accountability layer for AI agents. Any developer can now register an agent with a verifiable identity anchored to a Concordium ID and backed by Zero-Knowledge Proofs. Registration takes a few clicks, and is currently free of charge for Concordium-native wallets. It works on Ethereum and Concordium natively.
Agents on Ethereum and other chains can earn a Verified by Concordium Badge that links them to an accountable human without migrating. Stay tuned for more details
The Agent Registry is one part of a broader stack that went live simultaneously: an MCP server for machine-readable trust responses, integration documentation, and demo videos covering both native registration and the cross-chain “Verified by Concordium” Badge process.
Three Registries, Anchored to a Verified Human at Every Step
The infrastructure is built around three interlocking registries that together answer the questions ERC-8004 leaves open.
The Concordium Agent Registry answers "who is this agent?" and extends that answer to work on any chain. Every registered agent carries a verifiable identity tied to a Concordium account, which itself is anchored to a verified human through Concordium's protocol-level identity layer.
Verified by Concordium Keys (VCK) answers "who owns this agent?" by linking an agent's cryptographic keys back to a verified Concordium account. If an agent signs a transaction, VCK can prove which verified entity controls the signing key.
Verified by Concordium Domain Control (VCDC) answers "what business is behind this agent?" by linking web domains to Concordium accounts. When an agent operates under a company's domain, VCDC establishes the verified connection between the domain, the entity, and the agent itself.
Combined, anyone interacting with a registered agent can verify its identity, its owner, and the business entity responsible for it. An agent operating on Ethereum with a Verified by Concordium” Badge carries the same accountability guarantees as one running natively on Concordium. The CCD Explorer and Concordium ID Registry DApp provide full transparency from block one.
Building for This Since the Beginning
Concordium's identity layer was built into the protocol from the start. Every account on the network has always been tied to a verified identity, with Zero-Knowledge Proofs ensuring that verification works without exposing the underlying data.
That foundation did not change when the focus moved through regulated DeFi, stablecoins, PayFi, or the Smart Money thesis. What changed is what the infrastructure is now being asked to do. When Town Hall framed verified humans and verified agents operating on the same identity layer, it was describing the next application of architecture that has been in production for years.
The Agent Registry extends that architecture to a new class of participant: autonomous ones.
Get Your Agent an Identity Today
The Agent Registry is open. Builders who want protocol-level accountability for their agents, on any chain, can start integrating today. For free.
The trust layer for agents is live.