@orbinum/proof-generator

Fast ZK-SNARK proof generator for Orbinum privacy protocol. Witness calculation (TypeScript/snarkjs) + Proof generation (WASM/arkworks)

Generate 128-byte Groth16 ZK-SNARK proofs in ~6-8.5 seconds. Same TypeScript code runs identically in Node.js, browsers, Electron, and Tauri.

New in v2.0: Circuit artifacts and WASM modules are now installed automatically as npm dependencies (@orbinum/circuits and @orbinum/groth16-proofs). No more manual downloads!

Quick Start

npm install @orbinum/proof-generator

Dependencies are installed automatically:

• @orbinum/circuits - Circuit artifacts (WASM, proving keys)
• @orbinum/groth16-proofs - Arkworks WASM proof generator

import { generateProof, CircuitType } from '@orbinum/proof-generator';

const result = await generateProof(CircuitType.Unshield, {
  merkle_root: '0x...',
  nullifier: '0x...',
  amount: '100',
  // ... more inputs
});

console.log('Proof:', result.proof); // 0x... (128 bytes)
console.log('Signals:', result.publicSignals); // ['0x...', ...]

Documentation

• API Reference - Complete API, error handling, and usage examples
• Development Guide - Setup, testing, architecture, and contribution guide

Features

• ✅ Fast: ~8.5s end-to-end (500ms witness + 5-8s proof)
• ✅ Optimized: Direct decimal format pipeline (no conversion overhead)
• ✅ Compact: 128-byte proofs (50% smaller than snarkjs)
• ✅ Universal: Node.js, browsers, Electron, Tauri - same code
• ✅ Simple: No build tools, no Rust, no setup
• ✅ Type-Safe: Full TypeScript types

Supported Circuits

Circuit	Use Case
Unshield	Withdraw from pool to public address
Transfer	Private-to-private transfer
Disclosure	Selective revelation
PrivateLink	Privacy-preserving cross-chain identity dispatch

Related Packages

• @orbinum/circuits - Circuit artifacts (installed automatically)
• @orbinum/groth16-proofs - WASM proof generator (installed automatically)
• orbinum/node - Substrate blockchain node

Migration from v1.x

If you're upgrading from v1.x:

• ✅ No code changes required
• ✅ Artifacts now come from npm instead of GitHub releases
• ✅ Faster installation (npm cache)
• ✅ Offline-friendly
• ❌ Old circuits/ and groth16-proof/ directories can be deleted

License

Dual-licensed under Apache 2.0 or GPL 3.0. See LICENSE-APACHE2 and LICENSE-GPL3.