In partnership with BitGo and LayerZero, Wrapped Bitcoin (WBTC) is now natively supported on Sui using the new “Omnichain Fungible Token” (OFT) standard. This integration allows liquidity from Bitcoin to flow cross-chain directly into SUI with only gas fees, eliminating the need for additional wrapping and providing full support across the DeFi offerings on the network. The integration of WBTC on SUI further expands Bitcoin’s reach into rapid, low-cost ecosystems and could help drive Sui’s increasing popularity among both BTC holders and DeFi users.
Native WBTC and the OFT Standard
Historically, WBTC has operated as an ERC-20 token. While it represented Bitcoin's value on other blockchains, its use typically required a bridge and some form of wrapping or re-wrapping, which was often fragmented and incurred significant fees. With the addition of Sui integration, WBTC has been deployed on Sui in OFT form, functioning as a native asset backed by the chain itself, rather than as a bridge token.
The OFT standard simplifies WBTC cross-chain transfers. Instead of wrapping or unwrapping, users now only need to pay the native gas fee. Liquidity is pooled and interoperable, meaning WBTC behaves consistently regardless of where it is used. BitGo continues to serve as the custodian for the actual Bitcoin reserves backing WBTC. This ensures that each WBTC on Sui remains 1:1 backed by actual BTC, preserving its value proposition while enhancing its utility across different chains.
How WBTC on Sui Works: Flow, Use Cases, and Accessibility
With WBTC now live on Sui, Bitcoin holders and DeFi users have several avenues for engagement:
- •Users who already possess WBTC on Ethereum or another compatible chain can transfer it to Sui using cross-chain tools like Stargate. They will receive the native OFT-WBTC on Sui, bypassing the need for bridged or wrapped versions.
Once on Sui, WBTC can be integrated into a variety of DeFi applications. This includes lending and borrowing platforms, collateralizing funds for loans, and other services that leverage this asset for exposure to a basket of assets. The Sui ecosystem is also experiencing continued innovation driven by newly integrated protocols that accommodate WBTC. Many leading Sui DeFi applications, such as lending platforms, decentralized exchanges (DEXes), and automated market makers (AMMs), already support the new WBTC. Due to Sui’s low-fee, high-speed infrastructure, transactions involving WBTC are both fast and cost-effective compared to other bridging solutions. Transfers settle quickly, fees remain low, and liquidity is shared across chains. This streamlined process removes friction for Bitcoin holders seeking to engage with DeFi, addressing many of the previous pain points that hindered cross-chain utilization.
Ecosystem and Use-Case Expansion
The integration of WBTC on Sui appears to be just the beginning of its ecosystem expansion. Several DeFi protocols on Sui, including DEXes, lending markets, and liquidity pools, have already begun supporting the new WBTC, with more integrations anticipated. As more builders leverage OFT-WBTC, the development of new products is expected. These could include BTC-backed loans, synthetic assets, yield farming opportunities, and potentially BTC-denominated derivatives, all natively available on Sui.
In parallel with WBTC development, Sui is also actively enhancing its stablecoin ecosystem. The recently announced native stablecoin, USDsui, is designed to power payments, on-chain commerce, and stable-value transactions throughout the Sui ecosystem. The combination of native WBTC and stablecoins like USDsui positions Sui as a comprehensive multi-asset DeFi hub. Users will be able to move value, swap assets, engage in yield farming, and borrow/lend while transacting across different currencies, all supported by guaranteed fast settlement and low fees.
Conclusion
The launch of native WBTC on Sui, enabled by BitGo and LayerZero, marks a significant cross-chain liquidity upgrade for late 2025. This integration injects Bitcoin liquidity into Sui’s high-velocity, low-fee environment, offering BTC holders new DeFi opportunities and reinforcing Sui’s role in the broader multi-chain landscape.
Glossary
- WBTC (Wrapped Bitcoin):
- Bitcoin tokenized on Ethereum as an ERC-20 token, maintaining a 1:1 peg to the value of Bitcoin held in custody by centralized parties.
- OFT (Omnichain Fungible Token):
- A token standard on LayerZero that allows assets like WBTC to exist natively and transfer freely across blockchains without requiring additional wrapping layers.
- Native Integration:
- The capability for an asset to be issued directly on a blockchain, enabling full support from that chain’s protocols and infrastructure, rather than through a bridge.
- Cross-chain Liquidity:
- The ability for an asset to be moved across multiple blockchain networks, leading to increased accessibility and composability.
- DeFi (Decentralized Finance):
- Financial applications built on a blockchain network that facilitate trading, borrowing, lending, and other services without traditional intermediaries.
Frequently Asked Questions About WBTC on SUI
What happened with WBTC on Sui?
WBTC has been natively deployed on Sui through the OFT standard. Users can now bridge Bitcoin-backed tokens across chains at gas fee-only costs, without any added wrapping or complicated bridging processes.
Who backs the BTC in WBTC?
All WBTC is price-equivalent to real BTC, 1:1 backed by BTC held at a regulated trust company, enabling cross-chain use.
What DeFi apps on Sui support new WBTC?
Major Sui DeFi protocols, including lenders, DEXes, and liquidity pool platforms, now support WBTC for swaps, lending, and providing liquidity, among other functions.
So does this mean that Bitcoin is now working on Sui?
Yes, with native WBTC, Bitcoin’s value can be utilized throughout Sui’s ecosystem for DeFi applications, loans, swaps, and other on-chain transactions.
Why does this matter for cross-chain interchange?
This integration bridges Bitcoin liquidity across chains, minimizes fragmentation, streamlines transfers, and ensures that assets can move safely and efficiently between blockchains.