🤝Offer Hub - Marketplace

Stablecoin-powered marketplace

OfferHub is an open-source reference implementation for building stablecoin-powered marketplaces on Stellar with a fully abstracted, Web2-like UX. This initiative aims to

OfferHub composes three systems:

• Airtm: user accounts, deposits, withdrawals, compliance-aware rails. Learn more.

• Trustless Work: non-custodial escrow engine + disputes

• Stellar (USDC): settlement and enforcement layer

This documentation explains how OfferHub works so builders can fork it, deploy it, and extend it.

---

Goals

• Abstract stablecoins completely from end users.

• Non-custodial escrow enforcement on Stellar.

• User-level accounts (no pooled platform treasury for user funds).

• Explicit dispute workflow with platform customer support as resolver (using the Bakcoffice dApp)

• Open-source reference that others can copy and modify.

---

Non-Goals (v1)

• Multi-chain settlement (Stellar-first).

• Automated arbitration or AI dispute resolution.

• Auctions, subscriptions, complex carts.

• Fully decentralized governance.

---

High-Level Architecture

OfferHub separates concerns into three layers:

1. Account & Payments Layer (Airtm)

• user account / balance

• deposit methods

• withdrawals

• compliance-aware onboarding

1. Escrow & Enforcement Layer (Trustless Work on Stellar)

• escrow contract per order

• milestone and dispute states

• release/refund enforcement

1. Marketplace Orchestration Layer (OfferHub App)

• listings, checkout, order management

• dispute case management (support workflow)

• events/webhooks processing

• audit log and backoffice controls

1. Backoffice Operations and Auditing (backoffice dApp)

• Dispute resolving

• Manual releases

1. Escrow Viewer dApp

• Decentralized Escrow Status viewer

---

System Diagram

Quick Glossary

• Order: OfferHub off-chain object representing the marketplace transaction.

• Escrow: Trustless Work smart escrow contract representing conditional funds.

• Top-up: User deposit into their Airtm-backed marketplace balance.

• Release: On-chain transfer from escrow to seller based on conditions.

• Dispute: Explicit flagged state requiring customer support resolution.