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P2P Escrow

Escrow Trade Platform

A P2P trading platform spanning five blockchains, with smart-contract escrow for trustless settlement and real-time transaction monitoring. Built for a client through Mithium in 2023.

2 min read•5 Chains
Smart-contract escrow on 5 blockchainsTrustless settlement between buyer and sellerReal-time transaction monitoringDelivered by Mithium in 2023

Tech Stack

Solidityethers.jsReactNode.jsExpressMongoDB

Overview

The Escrow Trade Platform is a peer-to-peer trading product that Mithium delivered for a client in 2023. Buyers and sellers trade directly with each other while a smart contract holds the funds in escrow, so neither side has to trust the other or a central operator to settle.

The platform spans five blockchains, with the same escrow flow available on each.

How Settlement Works

  1. A seller lists an offer and a buyer accepts it.
  2. The buyer's funds are locked in the escrow contract on the chosen chain.
  3. Both parties complete their side of the trade off-chain or on-chain.
  4. On confirmation the contract releases the funds to the seller; on dispute or timeout it follows the contract's release rules.

Because the release logic lives in the contract, settlement is trustless: the platform operator cannot move escrowed funds outside the contract's rules.

Architecture

plaintext
┌──────────────────────────────────────────┐
│           React trading interface        │
├──────────────────────────────────────────┤
│        Node.js / Express API + MongoDB   │
│      offers · orders · chat · disputes   │
├──────────────────────────────────────────┤
│   ethers.js chain watchers (5 networks)  │
├──────────────────────────────────────────┤
│      Solidity escrow contracts           │
└──────────────────────────────────────────┘
  • Solidity escrow contracts deployed per chain hold and release funds.
  • ethers.js watchers subscribe to contract events and update order state in real time.
  • Node.js/Express with MongoDB manages offers, orders, and the off-chain side of a trade.
  • React frontend shows live escrow status as on-chain events arrive.

Technologies Used

  • Smart Contracts: Solidity
  • Chain Integration: ethers.js
  • Frontend: React
  • Backend: Node.js, Express, MongoDB

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