Beatoz Wallet

Solo-built Flutter multi-chain wallet with PIN/biometric authentication, AES-256 encrypted key storage, and modular chain helpers (WalletHelper factory/interfaces).

Role: Solo builder · architecture, implementation, and operational tooling
Period: 2025.10 - 2025.11
Context: Beatoz Labs

01 / Executive summary

Solo-built Flutter multi-chain wallet with PIN/biometric authentication, AES-256 encrypted key storage, and modular chain helpers (WalletHelper factory/interfaces).

DECISION / ASystem challenge

What made the system difficult.

Needed secure local key handling while keeping chain integrations extensible and maintainable as features and networks expand.

DECISION / BEngineering response

How boundaries and flows answered it.

Implemented secure storage + PIN-derived key flows for encrypted key management, Riverpod state management, and a WalletHelper factory that selects chain-specific helpers/services for RPC calls, signing, and transfers.

03 / Technology field

01Flutter02Dart03Riverpod04go_router05flutter_secure_storage06pointycastle

04 / Detailed record

Overview

Solo-built Flutter multi-chain wallet focused on secure key handling and extensibility.

Key Components

Encrypted key storage with PIN/biometric flows
Modular chain integration via WalletHelper interfaces/factory (EVM/XRPL/Solana/Tron, etc.)
Chain-specific signing/RPC handling separated from UI/domain logic

05 / Factual evidence

ACTUAL PROJECT ASSET / NOT GENERATED