Nexus AiCOS has released its v1.1 Axiom Edition, presenting Proofs of Behavior, or PoB, as an on-chain credit framework for autonomous entities on Base. The protocol describes decentralized trust as an evolving path from PoW and PoS toward PoB, with the goal of setting a measurable credit standard for interactions between autonomous agents.
A four-part model for machine credibility
The new blueprint centers on mathematical verification rather than narrative claims. Nexus AiCOS says v1.1 introduces a dynamic Know Your Agent, or KYA, dNFT identity system tied to $x402. It also states that its C-Score calculation and Axiom verification have been deployed as open-source, auditable components, shifting trust assessment away from conventional node-based validation and toward mathematical proof.
According to the release, the C-Score is a neural-network-based credibility framework built across four mathematical axioms: PoRT, or Power/Capacity Settlement History, at 30%; PoB, or Behavior/Velocity Spend Discipline, at 30%; Identity Verification and KYB at 20%; and Counterparty Risk and Network Safety at 20%. The structure is designed to combine behavioral records, identity checks, and network risk into a single on-chain credit layer.
Roadmap points to ZK primitives and developer incentives
The team describes v1.1 as more than a whitepaper revision, calling it a formalization of a Basel III-style credibility standard on-chain. The announcement also says the system is creating ZK primitives for dynamic Basel III assets, with a test interface listed at https://sepolia.aicard.credit/.
On the roadmap side, Nexus AiCOS says the protocol is preparing the next stage of its rollout ahead of Consensus 2026. At that event, the team plans to announce a developer initiative that includes $5/$1 gas bonuses for $x402 Agent developers, aimed at increasing machine financial liquidity. The project has also published links to its full v1.1 technical PDF, official site, and related test portals.