Safe-Wallet Pay

Secure ARC-based payments with Escrow, Universal Cross-Chain Transfers, and Max Yield Optimization.

Safe-Wallet Pay

Created At

HackMoney 2026

Project Description

watch Detailod demo E

SafeWallet Pay redefines the payment standard on ARC Testnet by combining institutional-grade safety with consumer-grade usability. We address the three biggest barriers to crypto adoption: transaction anxiety, chain fragmentation, and capital inefficiency.

1. Fearless P2P Payments with Reversible Escrow The "fat-finger" error is the nightmare of every crypto user. SafeWallet Pay replaces the traditional "fire-and-forget" model with a SafePay Escrow protocol. Funds are never sent directly to a wallet address; instead, they are locked in a smart contract. The recipient must explicitly "claim" the funds using a unique transaction ID. Crucially, this introduces a native "Undo" button: if the sender types the wrong address, or if the recipient loses access to their wallet, the sender can unilaterally refund the unclaimed assets. This simple mechanism provides total peace of mind for both personal transfers and business settlements.

2. The Universal Payment Layer (Powered by Yellow & LiFi) In a multi-chain world, paying someone shouldn't require a dozen preparatory steps. Our Universal Payment System makes chain boundaries invisible:

  • Yellow Vault: Users deposit assets into state channels powered by Yellow Network, enabling instant, gas-free transfers between users within the ecosystem.
  • Any-to-Any Settlement: When a receiver is ready to withdraw, they aren't forced to accept the sender's token. We leverage LiFi Composer to abstract the bridging and swapping process. A sender can pay in USDC on ARC, and the receiver can transparently claim ETH on Base, USDT on Arbitrum, or MNT on Mantle. We handle the complexity; the user just gets paid.

3. Automated Wealth Generation with Max Yield Money at rest should be money at work. Our Max Yield engine transforms SafeWallet Pay from a simple wallet into a productivity tool. Using the LiFi SDK, we constantly scan cross-chain yield opportunities (e.g., Aave, Morpho). Users can instantly bridge and deposit their idle stablecoins into the highest-yielding verified vaults across the EVM ecosystem with a single click. This democratizes sophisticated DeFi strategies that were previously accessible only to power users.

4. Business-Ready Infrastructure We streamline operations for DAOs and SMEs with our Bulk Transaction Manager, allowing thousands of payouts in a single transaction. Coupled with Web3Auth social logins (Google/Twitter), we ensure that onboarding employees or vendors is as easy as sending an email—no seed phrases required.

SafeWallet Pay isn't just a wallet; it's a complete financial operating system for the ARC ecosystem.

How it's Made

The core of SafeWallet Pay is built on ARC Testnet using Solidity smart contracts (SafePay.sol for escrow/refund logic and BulkTransactionManager.sol for batch payouts), deployed via Hardhat.

The frontend is a modern React 18 application built with Vite and styled with Tailwind CSS. We utilized Wagmi and Viem for robust blockchain interactions.

Key Integrations:

  1. LiFi SDK & Composer: This is the engine behind our cross-chain capabilities. We use LiFi Composer in the Universal Payment flow to allow receivers to swap/bridge their claimed funds into their preferred asset on any chain. We also use the LiFi SDK in Max Yield to find and execute routes to high-APY vaults.
  2. Yellow Network: We integrated Yellow's state channels to create the "Yellow Vault." This allows for instant, gas-free off-chain balance updates between users before the final settlement/claim.
  3. Web3Auth: To ensure mainstream accessibility, we integrated Web3Auth for social logins (Google/Twitter), removing the friction of seed phrase management for new users.

Notable Implementation: One distinctive piece of engineering was the "Universal Claim" flow. We had to orchestrate a hand-off between the internal state-channel balance (Yellow) and an on-chain execution (LiFi). When a user claims their balance, the app constructs a transaction that settles the state channel and immediately feeds that output into a LiFi route, effectively abstracting the complexity of "bridging" from the end user.

background image mobile

Join the mailing list

Get the latest news and updates

Safe-Wallet Pay | ETHGlobal