JavaScript Signing SDK: A Comprehensive Guide to Wallet Signature Integration

Overview

The Js-wallet-sdk is a versatile TypeScript/JavaScript-based wallet solution designed to support multiple blockchain networks. It encompasses various cryptographic algorithms and essential functionalities, enabling developers to generate private keys, create addresses, assemble transactions, and perform signatures seamlessly. This guide provides a detailed walkthrough of the SDK's capabilities, currently supporting mainstream blockchains with plans for continuous expansion.

Supported Platforms

Compatible with browsers and JavaScript environments, this SDK integrates effortlessly into:

Web applications
Mobile applications
Desktop applications

Installation and Setup

NPM Installation

To install the latest version via npm:

npm install @okxweb3/js-wallet-sdk

For individual coin modules (e.g., ETH or BTC):

Ethereum Integration:

npm install @okxweb3/coin-ethereum

Bitcoin Integration:

npm install @okxweb3/coin-bitcoin

Local Building Instructions

Clone the repository:

git clone https://github.com/okx/js-wallet-sdk.git

Run the build script:
```
npm run build
```

Core Features

Crypto-lib: Implements security algorithms (BIP32, BIP39, ECDSA, Ed25519).
Coin-base: Standardized interfaces for multi-chain operations.
Coin-specific modules: Transaction builders and signers for individual blockchains (e.g., coin-ethereum, coin-bitcoin).

Module Packages

Package	Description	GitHub Link
`@okxweb3/coin-base`	Core interfaces for blockchain operations	Details
`@okxweb3/crypto-lib`	Cryptographic utilities (BIP39, ECDSA)	Details
`@okxweb3/coin-ethereum`	Ethereum/EVM-compatible chains	Details
`@okxweb3/coin-bitcoin`	Bitcoin and derivatives (LTC, DOGE)	Details

👉 Explore all supported blockchains

Key Functions

Function	Description	Supported Chains
`getRandomPrivateKey()`	Generates cryptographically secure keys	All
`signTransaction()`	Signs raw transactions	ETH, BTC, etc.
`validateAddress()`	Verifies address formats	Multi-chain

Supported Blockchains

Blockchain	Derivation Path	Example Tokens
Bitcoin	`m/44'/0'/0'/0`	BTC, TBTC
Ethereum	`m/44'/60'/0'/0`	ETH, Arbitrum
Cosmos	`m/44'/118'/0'/0`	ATOM, OSMO

FAQs

How do I integrate the SDK into a React app?

Install the desired coin module via npm and import the functions directly into your components.

Can I use this SDK for hardware wallet interactions?

Yes, functions like getHardWareRawTransaction() support Ledger and Trezor devices.

What’s the difference between `coin-base` and individual coin modules?

coin-base provides universal interfaces, while coin-specific modules (e.g., coin-ethereum) implement chain-logic.

👉 Need further assistance? Contact support

Conclusion

This SDK simplifies blockchain integration with robust TypeScript/JavaScript tools. For advanced use cases, refer to the official GitHub repository or explore our developer portal.