Introduction

DecentraFit is a decentralized health protocol built as a Layer-2 network on zero-knowledge (ZK) infrastructure. It combines wearable intelligence, on-device AI, and cryptographic proofs to transform verified human activity into a secure and private digital asset.

Through the DecentraFit Watch and Health Ring, genuine biometric activity is authenticated locally and converted into Proofs of Activity (ZK-PoA) — cryptographic attestations that confirm effort without ever exposing raw health data. Each proof is verified through ZK-SNARK attestations and anchored to a ZK-powered Layer-2 chain, ensuring scalability, data confidentiality, and verifiable integrity.

This framework preserves absolute privacy:

• Personal metrics never leave the user’s device.

• Only the mathematical proof of authenticity is transmitted to the blockchain.

• All validation and reward distribution occur automatically via transparent smart contracts.

DecentraFit introduces a new standard for DeHealth (Decentralized Healthcare) — an ecosystem where human energy becomes verifiable computation and wellbeing generates digital value.

Human effort → Cryptographic proof → Tokenized reward

By bridging real-world biometric verification with decentralized computation, DecentraFit establishes a trustless, privacy-preserving economic layer that redefines how health, activity, and identity interact in the Web3 era.

 ┌──────────────┐       ┌────────────────┐       ┌──────────────────┐       ┌────────────────────┐       ┌───────────────────────┐
 │  Human Input  │ ───▶ │  Device Layer  │ ───▶ │  Proof Generator  │ ───▶ │  Layer-2 Verifier  │ ───▶ │  DFIT Reward Engine     │
 │ (Movement, HR)│       │ Watch / Ring   │       │ Builds ZK-PoA     │       │ (ZK Validation)   │       │ Token Distribution     │
 └──────────────┘       └────────────────┘       └──────────────────┘       └────────────────────┘       └───────────────────────┘