The primary role of the blockchain in a Decentralized Physical Infrastructure Network (DePIN) is to provide a secure, transparent, and immutable ledger that records all transactions, contributions, and activities within the network. This ledger ensures that all actions and rewards are verifiable and tamper- proof, which fosters trust among participants and prevents fraud or abuse. Key functions of blockchain in DePIN include:

• Serving as the backbone that supports decentralization by eliminating single points of failure and central control.
• Facilitating the execution of smart contracts that automate agreements, resource allocation, payments, and rule enforcement without intermediaries.
• Enabling tokenization to incentivize participation, where contributors earn tokens for providing physical resources (e.g., bandwidth, energy, storage).
• Ensuring transparency and accountability by creating an immutable, tamper-resistant record of all network interactions and governance activities.
• Supporting decentralized governance mechanisms, often via DAOs, to manage decision-making fairly and efficiently.

Overall, blockchain in DePIN underpins the decentralized, community-driven infrastructure development by combining secure record-keeping, automated trustless operations, and economic incentives to create resilient and efficient physical networks outside traditional centralized models. This role makes blockchain essential to DePIN’s security, transparency, efficiency, and scalable governance.