Inside DOSafe SDK Smart Wallets Made Simple

DOSafe SDK is more than a wallet tool — it's a modular, secure, and scalable framework built for seamless Web3 integration.

An effective SDK is more than just a set of utility functions—it must be built on a clear, modular, and secure architecture. DOSafe SDK is designed with this principle in mind, enabling developers to easily integrate, scale, and control the Web3 wallet experience with confidence.

In this article, we’ll dive into the architecture behind DOSafe SDK, how its components interact, and why it’s well-suited for both lightweight projects and large-scale systems.

1. The Three-Layer Architecture of DOSafe SDK

DOSafe SDK is structured around a clear three-layer architecture:

a. UI Layer

This is the front-end layer that allows you to seamlessly integrate wallet functionality into your app. It includes:

• Connect Wallet Modal

• Login/Sign Interface

• Confirm/Review Transaction Interface

• Transaction History Display

• Wallet Status Indicator (Connected / Not Connected)

You can currently customize certain elements like color themes and logo to align with your brand and user experience. More advanced UI customization will be supported in future updates.

b. Controller & Security Layer

This layer handles the core logic and user security through utility functions and hooks such as:

• Account Abstraction (smart wallet creation)

• Login/Logout Handling

• Transaction Signing

• Smart Contract Signer Management

• User Authentication & JWT Generation

This layer acts as the bridge between the UI and the blockchain, ensuring secure logic flow and data integrity.

c. Blockchain Infrastructure Layer

Integrated natively with DOSChain (and extensible to other EVM-compatible chains), this layer includes:

• Smart Wallet Factory Contracts

• Backend API Signers

• Optimized RPC & Node Providers from DOSChain

These components ensure high throughput, low transaction fees, and scalability across use cases.

2. Internal Communication Flow

Here’s a typical example to illustrate how these layers interact:

1. The user triggers connectWalletDOS() → UI displays the connection modal.

2. User selects a login method (Google, Email, etc.) → Controller handles authentication and retrieves a JWT.

3. SDK generates a smart wallet → links to the backend-provided signer.

4. Wallet is now connected → UI updates wallet status and stores session/JWT.

5. User initiates a transaction → Controller signs and submits it to DOSChain.

3. Key Advantages of DOSafe SDK Architecture

• Modular & Lightweight
  Easy to install and use only the components you need.

• Plug-and-Play
  Full wallet functionality can be integrated with just 3–5 lines of code.

• Secure by Design
  Private keys are never stored on the client. All transactions are signed via system signers or custom signers defined by the developer.

• Web2.5-Ready
  Supports email, Google, and social login for faster user onboarding with familiar UX.

A clean, scalable architecture is the foundation of any successful Web3 tool. DOSafe SDK not only simplifies wallet integration but also provides a solid infrastructure for performance, security, and customization.

More to come, stay with us.

DOS Chain Team