OKX Go Wallet SDK: one signing interface across thirteen chains

Offline signing is the feature the whole design serves

The SDK is described as a comprehensive solution for building wallet applications with offline transaction capabilities across multiple blockchain networks, providing a unified interface for account management, transaction creation and signing across various mainstream public chains. The feature list puts multi-chain support first, then offline transaction signing with the reason given as ensuring security with local signing. That ordering is the design. In a custodial design the key lives on a server and the client asks it to sign; in this design the transaction is built, the user is shown it, and the signing happens in the process that holds the key. The remaining features are the supporting parts of that flow: account generation and management, described as deriving addresses with ease, customizable transaction creation with flexible parameters for all supported chains, full Bitcoin token standard compatibility through BRC20, Atomical and Runes support, and an extensible modular architecture for future chain integration.

Thirteen chains, and the ones that get the same code

The supported chain table is a grid of three capabilities, address generation, transaction signing and message signing, and every listed chain has all three. The chains are Aptos, Bitcoin, Cardano, Cosmos, Ethereum, Kaspa, Near, Solana, Starknet, Stacks, Sui, Ton and Tron. The text above the table is the part to read carefully for planning purposes. EVM-compatible chains, with BSC, Polygon and Arbitrum named as examples, and Solana-based chains can reuse the same code structure rather than each getting its own package. So the thirteen rows are the chains with a dedicated package, and the absence of BSC, Polygon, Arbitrum and the rest of the EVM world from the table is not a gap, it is the reuse claim. The Bitcoin row also carries a footnote, that Bitcoin support includes BRC20, Atomicals and Runes-related functions such as deployment, minting, transfer and trading, which is a considerably larger surface than the other chains need.

Three directories, and documentation that lives per coin

The architecture is three core components. The coins directory implements transaction creation and signing for each blockchain, the crypto directory manages general cryptographic operations and signature algorithms, and the util directory provides helper utilities for common operations. The README says this structure allows for easy integration and extension of new blockchains, which is true in the sense that adding a chain means adding a package rather than changing the shared layer, but it also means the shared layer is not where chain logic lives. Documentation follows the same split. The README says to refer to the readme files located within each blockchain directory under the coins folder, and gives the aptos and bitcoin directories as examples, with each containing specific usage instructions and implementation details. The top-level readme therefore tells you where to look rather than telling you how to use it, and you should expect to read the per-coin documentation before writing anything against a specific chain.

Installing one coin at a time, with the module path in the go get

Installation is per chain rather than for the whole SDK, and the example installs the bitcoin package.

# Install SDK
go get -u github.com/okx/go-wallet-sdk/coins/bitcoin

The requirement is Go 1.22 or newer according to the installation note, and the module file itself declares go 1.23.0, so the module is the stricter of the two and you should build against 1.23 or later. The dependency list in the module file is short, with pkg/errors for error wrapping, stretchr/testify for tests and golang.org/x/exp for the newer language features, and the indirect entries are the usual test tooling. The example directory holds a separate module with its own LICENSE and go.mod, containing eth.go, types.go and a test file, so the examples are self-contained rather than part of the main module, which keeps them from constraining the SDK's own dependency set.

A build script that discovers modules and remembers what failed

The build and test story is a shell script in the project root, and the design of that script says something about how the project is maintained. The script automatically discovers all modules under the coins, crypto, util and example directories, then runs a four-step process for each.

1. go mod tidy, to clean and verify dependencies 2. go mod edit, to set the toolchain configuration 3. go build, to compile the module and all subpackages 4. go test, to run all the tests

If any step fails, the remaining steps are skipped for that module. The invocation modes are worth knowing.

# Run all modules
sh build.sh all

# Run only previously failed modules
sh build.sh failed

# Run specific modules only
sh build.sh bitcoin
sh build.sh bitcoin,ethereum,ton

The failed mode is the useful one. Failures are logged to build_failures.log with the detailed output, and ignored modules are tracked in the same file, so sh build.sh failed re-runs only what broke, which is what you want after a fix. The script's own usage line is the concise form of the same options.

Usage: ./build.sh [all|failed|mod1,mod2,...] [-i=module1,module2,...]

And the per-module progress output is explicit about which step failed.

==========================================
[coins/bitcoin]
==========================================
  [1/4] go mod tidy    ... ✓ PASS
  [2/4] go mod edit    ... ✓ PASS
  [3/4] go build       ... ✓ PASS
  [4/4] go test        ... ✓ PASS

It shares design principles with the JavaScript SDK, which is where to look for examples

The feedback and support section is short and points in a useful direction. The Go SDK shares common design principles and usage patterns with the JS SDK, and while each blockchain's specific usage is in the corresponding coins directory readme, the README points to the JS SDK demo and its documentation for additional guidance. That is the fastest way to understand the intended usage model, because the same concepts are expressed in a language where the wallet SDK ecosystem is denser. Issues go to the GitHub issue tracker, and the project keeps a SECURITY.md and a CHANGELOG in the repository root alongside the build script. The licence is MIT, the repository is not archived, and the last push was on 2026-09-29, with no GitHub releases, so the module versions rather than the tags are what you track.

Editorial conclusion

The OKX Go Wallet SDK fits a Go team building a wallet or signing service that has to cover more than one chain and that wants the private key to stay in process rather than go over a network. It does not fit a team that wants one chain done exceptionally well, because the shared layer is deliberately thin and the chain-specific behaviour lives in separate packages. Verify first that the chain you need has a package under coins with its own README, since the SDK is documented per directory rather than as a whole, and check the Go version requirement, since the module file asks for 1.23 while the installation note says 1.22 or newer.

Frequently asked questions

Official sources

1. Issues
2. License: MIT
3. okx/go-wallet-sdk on GitHub
4. README