Dotwave

Dotwave is a mobile app that gives everyday users access to the Polkadot ecosystem without needing to understand blockchain. Think of it as a WeChat-style super app — one interface, every Polkadot product and service inside it.

What It Does

• Self-custody wallet — generates and manages a Polkadot account entirely on-device. No seed phrases shoved in your face, no blockchain jargon.
• App launcher — access Polkadot ecosystem apps, tools, and products from one place.
• Name registration — claim a human-readable name on the Polkadot network.
• Governance — view and vote on active referenda directly in-app.
• Token operations — send, receive, and eventually purchase DOT and ecosystem tokens.
• Encrypted messaging — zero-metadata peer-to-peer messaging (in development).

Tech Stack

• Flutter — cross-platform UI (Android first, iOS coming)
• Rust — all cryptography, RPC calls, and business logic via rust_core
• flutter_rust_bridge — bridge between Flutter and Rust
• Polkadot/Substrate — Sr25519 keypairs, on-chain name resolution, governance

Security Architecture

Dotwave is built with a security-first approach. Key material never exists in plaintext in application memory longer than necessary.

• Keypair generation via BIP39 with Sr25519 (Polkadot native)
• Seed phrase displayed once in a screenshot-blocked window, then dropped
• Android Keystore (StrongBox/TEE) for hardware-backed on-device key protection
• Backup encryption: Argon2id + ChaCha20-Poly1305 with hardened parameters (256MB memory cost, 4 iterations)
• Biometric/PIN authentication gate for returning users
• Recovery: encrypted cloud backup + user passphrase — no Dotwave servers involved

Project Structure

dotwave/
├── lib/                        # Flutter/Dart UI
│   ├── main.dart               # App entry, screens, navigation
│   └── keystore.dart           # Android Keystore platform channel
├── android/                    # Android project files
├── rust_core/                  # Rust core library
│   ├── src/
│   │   ├── lib.rs
│   │   └── core.rs             # Crypto, keypair, RPC logic
│   └── Cargo.toml
└── flutter_rust_bridge.yaml

Building

Prerequisites

• Ubuntu 22.04 (WSL2 supported)
• Flutter SDK (stable channel)
• Rust via rustup
• Android SDK + NDK 27.0.12077973
• Java 17

Android targets

rustup target add aarch64-linux-android
rustup target add armv7-linux-androideabi
rustup target add x86_64-linux-android

Build

flutter pub get
flutter_rust_bridge_codegen generate
flutter build apk --debug

Status

Early development. Security foundation is complete. Feature buildout in progress.

License

Private. All rights reserved.