Trust.Swap

Cross-Chain Native Token Swap Platform

🚀 Overview

A trustless, fast, and seamless platform for swapping native tokens (ETH, APT, SOL, etc.) across blockchains—no wrapped assets, no centralized relayers.

🎯 Goal

Enable users to transfer real native tokens between chains using Hash Time-Locked Contracts (HTLC) and a Liquidity Provider (LP) model. No middlemen, no fake tokens, no risk.

How It Works

1. User Initiates Swap:
   • Locks tokens on the source chain using HTLC (hashlock + timelock).
2. LP Provides Liquidity:
   • LP locks equivalent tokens on the destination chain with the same hashlock.
3. Atomic Claim:
   • User reveals the secret to claim destination tokens.
   • LP uses the secret to claim source tokens.

Guarantee: Either both transfers succeed, or both fail—fully atomic and trustless.

Key Features

• Native token swaps: No wrapped assets, no relayers.
• Instant swaps: As long as LP liquidity exists.
• Trust-minimized: HTLC ensures security for both parties.
• LP model: LPs earn fees for providing liquidity.
• Fallback options: P2P swaps or pooled liquidity if no LP is available.

Problems Solved

• Centralized bridges are slow/risky.
• No dependence on relayers/oracles.
• Users get real tokens, not wrapped.
• LP model solves UX issues when liquidity is low.

Example Workflow: ETH → Aptos

1. Alice requests swap: Source = Ethereum, Destination = Aptos, Token = ETH, Amount = 1 ETH.
2. LP locks tokens: LP locks 1 ETH on Aptos and 1 ETH on Ethereum using HTLC.
3. Atomic claim: Alice claims 1 ETH on Aptos by revealing the secret. LP claims 1 ETH on Ethereum.
4. Result: Alice gets native ETH on Aptos. LP earns a fee. No middleman.

Analogy

Like giving cash to a courier in New York, who instantly delivers real ETH in Paris. Later, the courier claims the NY cash—no fake money, no cheating, fully atomic.

Tech Stack

• Smart Contracts: Move (Aptos), Solidity (Ethereum)
• Frontend: React, Aptos Wallet Adapter
• Backend/CLI: Aptos CLI, custom scripts

Demo Steps

1. Connect wallet (Petra/Aptos).
2. Initiate a swap or demo transfer.
3. Sign transaction in wallet popup.
4. Show tokens locked in contract.
5. Query contract state via CLI.

Future Directions

• Add more chains and tokens.
• Support pooled liquidity and fallback P2P swaps.
• Improve UX and security.

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