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L{CORE} - Open Source IoT Attestation Infrastructure

What is L{CORE}?

Decentralized IoT attestation infrastructure for the physical world.

L{CORE} brings cryptographic trust to IoT data. Built on Reclaim Protocol's attestor-core TEE infrastructure, L{CORE} extends their proven attestation technology to embedded devices and sensor networks—enabling verifiable IoT data on any EVM chain.

Verifiable Data from the Physical World​

IoT devices generate enormous amounts of data, but without cryptographic provenance, that data can't be trusted on-chain. Sensor readings can be spoofed. Device identities can be faked. Centralized attestation services introduce single points of failure that undermine the decentralized systems they're meant to support.

L{CORE} addresses this by combining Reclaim Protocol's battle-tested TEE attestor infrastructure with device-native SDKs and on-chain settlement. IoT devices sign data with decentralized identities (did:key), attestors verify signatures in trusted execution environments, and proofs settle on your chosen EVM chain. The result is a complete pipeline from physical sensor to blockchain—with cryptographic guarantees at every step.

Built With Reclaim Protocol​

L{CORE} is built on top of Reclaim Protocol's attestor-core—the same TEE infrastructure that powers zkTLS proofs for web data. We've extended their architecture to support:

  • Device attestation via did:key signatures from embedded systems
  • IoT-optimized SDKs for resource-constrained hardware (C, Python, TypeScript)
  • Sensor data pipelines with privacy-preserving bucketing
  • Self-hosted deployment for sovereign IoT infrastructure

This collaboration lets us focus on what we do best—IoT integration and device SDKs—while leveraging Reclaim's expertise in TEE verification and cryptographic proofs.

Who It's For​

AudienceValue
DePIN BuildersProve device authenticity and sensor data integrity on-chain
Smart City ProjectsVerifiable environmental monitoring and infrastructure data
Supply ChainTamper-evident tracking with cryptographic provenance
Industrial IoTAuditable sensor data for compliance and quality control

Key Capabilities​

Device-First Design​

C SDK for ESP32, Arduino, ARM Cortex-M, and other resource-constrained devices. Real embedded attestation, not just mobile apps.

Decentralized Identity​

Every device gets a did:key identity. Signatures prove data origin without centralized device registries.

Privacy-Preserving​

Bucket sensitive values into ranges. Prove "temperature > 30°C" without revealing exact readings.

Arbitrum Native​

Deploy on Arbitrum or Arbitrum Orbit chains. Locale Network, City Chains—your infrastructure, your choice.

Self-Sovereign​

Run your own attestors. No dependency on external networks or third-party uptime.

Architecture Overview​

IoT Device (did:key) → Attestor (TEE) → Cartesi (SQLite) → EVM Settlement
  1. Device signs sensor data with its decentralized identity
  2. Attestor (Reclaim's attestor-core) verifies the signature in a TEE
  3. Cartesi stores the attestation in a deterministic SQLite database
  4. EVM provides final settlement with fraud proofs

Supported Hardware​

CategoryDevices
MicrocontrollersESP32, Arduino, ARM Cortex-M series
Single-Board ComputersRaspberry Pi, NVIDIA Jetson, BeagleBone
IndustrialModbus-compatible PLCs, OPC-UA gateways
SensorsTemperature, humidity, GPS, accelerometer, air quality

Limitations​

LimitationDetails
EVM onlyCurrently requires EVM-compatible chain for settlement
Determinism requiredCartesi rollup code must be deterministic
TEE for productionFull security guarantees require TEE deployment
Device constraintsC SDK requires ~32KB RAM minimum

Credits​

L{CORE} is made possible by:

  • Reclaim Protocol — Our attestor layer is built on attestor-core, their open-source TEE infrastructure for cryptographic proofs
  • Cartesi — Full Linux runtime with fraud proofs for on-chain computation

Next Steps​