Developing blockchain-powered applications requires robust, secure, and scalable infrastructure. The Go Wallet SDK is a powerful, open-source solution designed for developers who want to integrate multi-chain wallet capabilities directly into their Go-based applications. Whether you're building a Web3 platform, decentralized exchange, or digital asset management tool, this SDK streamlines key operations like private key generation, address creation, transaction signing, and cryptographic processing — all while supporting a wide range of blockchains.
Built with modularity in mind, the Go Wallet SDK offers dedicated packages for each major blockchain ecosystem, enabling seamless integration across networks such as Ethereum, Bitcoin, Cosmos, Solana, Aptos, and more. This allows developers to maintain clean codebases while ensuring compatibility and security across diverse ecosystems.
Why Use the Go Wallet SDK?
The Go Wallet SDK stands out due to its offline transaction capability, modular architecture, and extensive multi-chain support. It enables developers to perform critical wallet functions without relying on third-party services, enhancing both privacy and reliability.
Key benefits include:
- Full control over cryptographic operations
- Support for both mainnet and testnet environments
- Easy integration via standard
go getcommands - Consistent API patterns across different chains
- Open-source transparency with active community contributions
👉 Discover how to integrate secure wallet functionality into your next project
Installation and Setup
Getting started with the Go Wallet SDK is simple. Since it's built for the Go ecosystem, installation leverages the standard Go module system.
Install Using go get
To install the core package (common utilities used across all modules), run:
go get github.com/okx/go-wallet-sdk/cryptoFor chain-specific modules, use the respective import paths under the coins/ directory. For example:
Ethereum Integration:
go get github.com/okx/go-wallet-sdk/coins/ethereumBitcoin Integration:
go get github.com/okx/go-wallet-sdk/coins/bitcoinEach module is self-contained and includes only what’s necessary for that blockchain, minimizing bloat and improving compile times.
Core Features and Functional Modules
The SDK is structured around two primary components: the crypto module and chain-specific coin modules.
The crypto Module: Foundational Security Tools
This foundational package provides essential cryptographic primitives required for secure wallet operations:
- BIP32 & BIP39 implementations: Generate hierarchical deterministic (HD) wallets using mnemonic phrases and derive child keys securely.
- ECDSA & Ed25519 signature algorithms: Support for widely adopted digital signature standards across different blockchains.
- Hashing and encoding utilities: Includes SHA-256, Base58, Base64, and other common encoding formats used in blockchain protocols.
- Message signing functions: Sign arbitrary data securely for authentication or proof-of-ownership purposes.
These tools are reused across all coin modules, ensuring consistency and reducing duplication.
Chain-Specific Modules: Unified Interface Across Blockchains
Each blockchain has unique transaction formats, signing logic, and address derivation rules. The Go Wallet SDK abstracts these differences behind a consistent interface.
Below are some of the most widely used modules:
Ethereum SDK
Supports Ethereum and all EVM-compatible chains (e.g., Polygon, Arbitrum, Optimism).
Key Functions:
NewAddress: Derive an address from a private keySignTransaction: Sign Ethereum-style transactionsSignMessage: Sign arbitrary messages using EIP-191 standard
Bitcoin SDK
Supports BTC and forks including Litecoin (LTC), Dogecoin (DOGE), Bitcoin SV (BSV), and testnet BTC.
Key Functions:
NewAddress: Generate legacy, P2SH-P2WPKH, or Bech32 addressesSignTx: Sign raw transactionsGenerateUnsignedPSBTHex: Create partially signed Bitcoin transactions (PSBT)
Cosmos SDK
Supports Cosmos ecosystem chains like ATOM, Osmosis (OSMO), Juno, and Terra (legacy).
Key Functions:
NewAddress: Generate bech32-encoded addressesTransfer: Prepare and sign Cosmos SDK-style transfersSignMessage: Sign Amino-encoded messages
Aptos SDK
Designed for the Move-based Aptos blockchain.
Key Functions:
NewAddress: Create account addresses from private keysValidateAddress: Check address validitySignRawTransaction: Sign Aptos-native transaction payloads
Other supported modules include:
- Solana, NEAR, Polkadot, Starknet, SUI, TRON, Flow, EOS, and zkSync
Each follows a similar pattern: instantiate, sign, verify — making cross-chain development intuitive.
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Supported Blockchains and Derivation Paths
The Go Wallet SDK supports over 50 blockchain networks across multiple families. Below is a summary of major supported ecosystems:
| Chain Family | Supported Networks |
|---|---|
| Bitcoin Ecosystem | BTC, BCH, BSV, LTC, DOGE, TBTC |
| Ethereum & EVM Chains | ETH, BSC, Polygon, Arbitrum, zkSync, Optimism, Avalanche C-Chain |
| Cosmos Ecosystem | ATOM, OSMO, JUNO, KAVA, SEI, STARS |
| Layer 2 & ZK-Rollups | Starknet, zkSync Era, ZKSpace |
| New-Gen Platforms | SUI, Aptos, NEAR, Solana, Flow |
| Others | TRON, EOS/WAX, Stacks |
Each network uses standardized BIP44 or chain-specific derivation paths (e.g., m/44'/60'/0'/0/0 for Ethereum). Full derivation path details are embedded in the SDK to ensure correct wallet hierarchy generation.
Testing and Reliability
Reliability is critical when handling digital assets. The SDK includes comprehensive unit tests for every module, located in the /tests directory of each package on GitHub.
These test cases cover:
- Correctness of address derivation
- Transaction serialization accuracy
- Signature verification against known vectors
- Error handling under edge conditions
Developers can run these tests locally to validate integrations or contribute new ones to expand coverage.
Frequently Asked Questions (FAQ)
What makes this SDK different from other wallet libraries?
Unlike many wallet libraries that require online nodes or RPC dependencies, this SDK performs fully offline operations, making it ideal for cold storage solutions, hardware wallets, or backend signing services where internet access is restricted or undesirable.
Can I use this SDK in production?
Yes. The SDK is actively maintained and used in production environments by various Web3 platforms. However, always audit your implementation and follow best practices for key storage and access control.
Does it support HD wallet derivation?
Yes. The SDK fully supports BIP39 mnemonic generation and BIP32 hierarchical derivation for Bitcoin and Ethereum-compatible chains. For Ed25519-based chains like Solana or SUI, hard derivation is used as per SLIP-0010 standards.
Is there documentation for each module?
Yes. Each module has detailed README files and code comments hosted on GitHub at github.com/okx/go-wallet-sdk, including usage examples and parameter descriptions.
How often is the SDK updated?
Updates are released regularly to support new chains, fix bugs, and improve performance. The project follows semantic versioning to ensure backward compatibility.
Can I contribute to the SDK?
Absolutely. As an open-source project, contributions — including bug reports, feature requests, and pull requests — are welcome via the official GitHub repository.
Final Thoughts
The Go Wallet SDK empowers developers to build secure, scalable, and interoperable Web3 applications using one of the most efficient backend languages available today. With its clean modular design, extensive chain support, and strong cryptographic foundation, it's an excellent choice for any project requiring reliable blockchain interaction.
Whether you're building a custodial service, a cross-chain bridge, or a DeFi protocol backend, this SDK provides the tools you need to handle digital assets safely and efficiently.
👉 Start integrating multi-chain wallet features today — fast, secure, and scalable