ZKP Privacy Protocol

Zero-Knowledge Proofs

A privacy-preserving identity and credential verification protocol powered by ZK-SNARKs — enabling on-chain proof verification without revealing underlying user data, built for compliant DeFi and institutional use cases.

Technology Stack

RustSolanaAnchor FrameworkGroth16Arkworks

Key Features

ZK-SNARK proof generation
On-chain proof verification
Private credential attestation
Selective disclosure
Merkle tree commitments
Age / KYC proof circuits
Compute-optimized verifier
Multi-proof batching

Architecture

┌──────────────┐     ┌──────────────────┐     ┌────────────────┐
│    User      │────▶│  Proof Generator │────▶│  On-Chain      │
│  (Prover)    │     │  (Arkworks)      │     │  Verifier      │
└──────────────┘     └──────────────────┘     └───────┬────────┘
                                                      │
                     ┌────────────────────────┬────────┴────────┐
                     │                        │                 │
           ┌─────────▼─────────┐   ┌─────────▼──────┐  ┌──────▼──────┐
           │   Credential      │   │   Merkle Tree  │  │   ZK Circuit│
           │   Registry        │   │   Commitment   │  │   Library   │
           │   (PDA Roots)     │   │   Store (PDA)  │  │  (Arkworks) │
           └───────────────────┘   └────────────────┘  └─────────────┘

Code Sample

lib.rs

use anchor_lang::prelude::*;
use groth16_solana::groth16::{Groth16Verifier};

// ZKP Privacy Protocol (Solana / Anchor)
#[program]
pub mod zkp_verifier {
    use super::*;

    pub fn verify_credential(
        ctx: Context,
        proof: ProofData,
        public_inputs: Vec,
    ) -> Result<()> {
        let nullifier = &proof.nullifier;
        let registry = &mut ctx.accounts.registry;

        require!(
            !registry.nullifiers.contains(nullifier),
            ZkpError::ProofAlreadyUsed
        );

        let vk = &ctx.accounts.verifying_key;
        let valid = Groth16Verifier::verify(
            &proof.a, &proof.b, &proof.c,
            &public_inputs, &vk.data,
        )?;

        require!(valid, ZkpError::InvalidProof);
        registry.nullifiers.push(*nullifier);
        emit!(CredentialVerified {
            user: ctx.accounts.signer.key(),
        });
        Ok(())
    }
}

Project Metrics

Groth16

Proof System

400ms

Solana Finality

Zero

Data Disclosed

Work With Us

This project represents the kind of production-grade blockchain engineering Blocknetics delivers. Whether you need a similar solution or want to extend an existing one, our team is ready.

Discuss Your Project → ← All Projects