Introduction

What is PolyPay?

PolyPay is a privacy-preserving payroll platform built on Horizen and Base. It enables organizations, DAOs, and global teams to run payroll privately across multiple chains.

The Problem

Current on-chain payment solutions expose sensitive information publicly:

• Employee salaries are visible to everyone

• Payment recipients can be tracked

• Multisig approvers are publicly identified

This lack of privacy prevents businesses from adopting crypto payroll.

Our Solution

PolyPay uses zero-knowledge proofs and multi-chain deployment (Horizen, Base, and Arbitrum) to provide:

• Private Multisig: Team approvals without exposing signer identities — only a relayer wallet appears on-chain

• ZK Authentication: Login via zero-knowledge proof; secrets never leave your device

• Flexible Payment Logic: Single and batch transfers

• Gasless USDC Deposit (x402): Fund a multisig with one signature, no ETH required — works for human users and AI agents via the x402 protocol

On the roadmap: confidential payment amounts and recipients ("private payments"). Today's ZK privacy covers signer identities and authentication; we're actively building toward fully private transfers.

Who Is It For?

• Crypto-native startups and SMBs

• DAOs managing contributor payments

• Traditional businesses entering crypto

• Teams using Safe or Squads who want privacy upgrades

Supported Networks

• Horizen (mainnet & testnet)

• Base (mainnet & Sepolia)

• Arbitrum (Arbitrum One mainnet & Sepolia; account contract is a Rust/WASM port via Arbitrum Stylus)

Roadmap

• Additional chain integrations

• Fiat on/off-ramp integration

• Escrow and milestone-based payments

• Recurring transfers

• Expand x402 to additional networks and tokens beyond USDC on Base