Supported Networks for Web3 Wallet-as-a-Service (WaaS) API

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The world of blockchain and decentralized applications (dApps) is expanding rapidly, and developers need reliable, scalable infrastructure to support multi-chain operations. One of the most critical aspects of any Web3 development platform is its network compatibility. This guide explores the supported networks within OKX OS's Wallet-as-a-Service (WaaS) API, offering developers a comprehensive overview of which blockchains are integrated and what services are available across EVM, UTXO, and other emerging network types.

Whether you're building decentralized exchanges, NFT marketplaces, DeFi protocols, or secure wallet solutions, understanding the breadth and depth of supported chains is essential for seamless integration and optimal user experience.

EVM-Compatible Networks

Ethereum Virtual Machine (EVM) networks dominate the current Web3 landscape due to their robust developer tools, smart contract functionality, and wide ecosystem adoption. OKX OS supports a broad range of EVM-based blockchains, enabling developers to deploy cross-chain applications with ease.

Key services available across most EVM chains include:

Major fully supported networks include:

Additionally, emerging Layer 2 and modular blockchains like Blast, Scroll, Taiko, Manta Pacific, and Merlin Chain are also supported—ensuring future-proof development capabilities.

Some chains have partial support depending on ecosystem maturity. For example:

👉 Discover how to integrate multi-chain EVM support in minutes with powerful Web3 APIs.

Why EVM Support Matters

EVM compatibility allows developers to reuse existing Solidity codebases, leverage well-documented tools like Hardhat and Remix, and tap into vast liquidity pools. By supporting over 40 EVM chains—including testnets like Sepolia—OKX OS empowers builders to launch globally without rewriting core logic for each network.

UTXO-Based Networks

While EVM chains dominate smart contract platforms, UTXO (Unspent Transaction Output) models remain foundational in cryptocurrency history—most notably with Bitcoin. These networks prioritize security, simplicity, and scalability for payment-focused use cases.

Supported UTXO networks include:

All listed chains support the Wallet API, allowing for address generation and balance queries. Notably:

Unlike EVM chains, most UTXO networks do not natively support complex smart contracts or DeFi protocols. As such, DEX and DeFi APIs are generally unavailable on these chains.

However, the inclusion of Bitcoin inscription tools highlights OKX OS’s forward-thinking approach to next-generation digital assets beyond traditional tokens.

Non-EVM & Alternative Architectures

As blockchain technology evolves, new consensus models and execution environments are gaining traction. OKX OS extends support beyond EVM and UTXO to accommodate innovative architectures like account-based non-EVM systems and high-performance DAG-inspired ledgers.

Currently supported alternative networks:

These integrations reflect a strategic push toward heterogeneous blockchain interoperability, where developers can choose the best network for their specific use case—be it speed, cost, security, or community size.

Frequently Asked Questions

Q: Which blockchains offer full support across all four APIs (Wallet, DEX, Marketplace, DeFi)?
A: Ethereum Mainnet, BNB Smart Chain, Polygon Mainnet, Arbitrum One, Avalanche C-Chain, zkSync Era, Manta Pacific, and OKT Chain currently offer full support across all major service APIs.

Q: Is Solana fully supported?
A: Yes, Solana supports both Wallet API (for key management and transaction building) and DEX API (for swaps and liquidity routing). However, Marketplace and DeFi APIs are not yet available.

Q: Can I build an NFT marketplace on Fractal Bitcoin?
A: Yes. While Fractal Bitcoin doesn’t support general smart contracts, it does support Ordinals-based NFTs via the Marketplace API. You can query, list, and trade inscriptions built on this Bitcoin fork.

Q: When will TON Wallet API be available?
A: The Wallet API for TON is currently in development and expected to launch soon. DEX swap functionality is already live.

Q: Are testnets supported?
A: Yes. For example, Ethereum’s Sepolia testnet is fully supported via the Wallet API, allowing developers to test integrations before going live.

Q: Does OKX OS support cross-chain swaps between EVM and non-EVM networks?
A: Yes. The DEX API enables cross-chain swaps between many EVM chains and select non-EVM networks like Tron and Solana through aggregation and bridging mechanisms.

With over 50 blockchains supported—from established leaders like Ethereum and Bitcoin to rising stars like Blast, SUI, and TON—OKX OS delivers one of the most extensive Web3 infrastructures available today.

Its modular API design allows developers to pick only the services they need while maintaining flexibility across diverse ecosystems. Whether you're launching a global DeFi protocol or a niche NFT platform on a niche chain, the platform scales with your ambitions.

👉 Start building on the most comprehensive multi-chain Web3 API suite today.

For teams looking to accelerate development without managing node infrastructure or private key security, OKX OS provides enterprise-grade reliability with developer-first tooling.

Another great reason to get started early?
👉 Access advanced Web3 tools with seamless onboarding and real-time analytics.

No matter your project’s scope or target audience, leveraging a platform with deep network coverage ensures you’re ready for the next wave of decentralized innovation.