Device NFTs are ERC-721 tokens that serve as the on-chain representation of physical machines or autonomous agents. They are a core primitive in the ioID architecture, acting as the canonical link between the real world and on-chain identity, ownership, and programmability.
In many cases, a Device NFT already exists within a DePIN project as part of its native infrastructure, to represent their deployed devices. However, if a Device NFT contract is not already available, it can be created as part of project registration flow.

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Purpose

Each Device NFT functions as a unique digital certificate for a specific machine or AI agent, enabling:
  • On-chain registration of new physical assets
  • Ownership tracking and transfers
  • Access control via smart contracts (e.g., MBAs)
  • Integration into reward systems, staking mechanisms, or AI agent networks

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When is a Device NFT Minted?

Device NFTs are typically minted at the moment of asset creation. This may include:
  • Manufacturing of a physical device (e.g., an IoT sensor, drone, EV charger)
  • Bootstrapping of an AI agent or digital twin
  • Provisioning a new node in a decentralized network (DePIN, DeAI)
Minting represents the genesis event that brings the real-world asset representation onto the blockchain.