Labs/IoT + Blockchain Oracle Lab
Advanced
InfrastructureNFT Certificate on Completion

IoT + Blockchain Oracle Lab

Connect real-world sensor data to a smart contract — trustlessly

5 hrs 2,000 XP 4 modules⛓️ Polygon Amoy (testnet)

About This Lab

Build the infrastructure connecting physical IoT sensors (simulated) to on-chain smart contracts via a Chainlink-compatible oracle. Real use cases: energy metering, carbon credit verification, supply chain attestation, real estate condition monitoring.

Lab Modules

  1. 1
    Oracle architecture and the trust problemlesson

    Oracle problem, Chainlink architecture, DON, Functions.

    25 min
  2. 2
    Build Chainlink Functions oraclebuild

    Functions request, JS source code, secrets management.

    60 min
  3. 3
    IoT sensor data → oracle feedsimulation

    Simulated MQTT sensor, HTTP endpoint, data normalization.

    40 min
  4. 4
    On-chain settlement contractdeploy

    Condition logic, automated settlement, event emission.

    35 min

What You'll Build

  • Build a Chainlink Functions oracle that fetches external data
  • Connect IoT sensor data to a smart contract condition
  • Simulate energy metering with on-chain settlement
  • Understand oracle attack vectors and trust minimization

Tools & Stack

Chainlink FunctionsHardhatNode.jsIoT Simulator
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Ready to build?

Complete all 4 modules and earn your NFT certificate. Earn 2,000 XP on completion.

Start Lab →Register Free First

Prerequisites

🏅 NFT Certificate

On completion, your certificate is anchored to IPFS via Unykorn and issued as an on-chain NFT badge — permanently verifiable proof of your build.

Verify on Unykorn