Contact person: Android Crypto Transfer Wallet

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Location: Chennai, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a production-ready Android wallet whose main purpose is to let users transfer cryptocurrencies quickly and safely. The app must include built-in two-factor authentication, a QR code scanner for address entry, and a detailed, searchable transaction history.

Stablecoins are at the heart of the project, so smooth handling of popular dollar-pegged tokens (for example, USDT) is essential, and the architecture should be flexible enough to add or swap in other assets like BTC or ETH later without a major rewrite.

Deliverables
• Android APK and full Kotlin/Java source
• Lightweight backend or direct-to-chain integration for signing/broadcasting transactions
• Secure key management (non-custodial preferred) with 2FA flow implemented
• QR scanning module that populates the send screen and validates address formats
• Paginated transaction history view pulling live data from the chain or an indexer
• Clear build/run instructions plus unit tests covering critical transfer paths

Acceptance criteria
1. A test transfer of a stablecoin completes on-device within 30 seconds and is reflected in history.
2. 2FA prompt appears on every outbound transaction and blocks signing if the code is wrong.
3. Scanning an EIP-681 or BIP-21 QR populates the amount and address fields accurately.
4. Source compiles with no errors in Android Studio Arctic Fox or newer.

If any open-source libraries or APIs are used, please list them and their licenses so compliance is straightforward." (client-provided description)