In a significant development for decentralized finance (DeFi), the integration of tBTC with the Sui blockchain has advanced into its second phase, promising enhanced liquidity options and improved yield strategies for Bitcoin. The initial phase, which saw the successful deployment and testing of tBTC, laid the groundwork for this expansion, demonstrating that Bitcoin liquidity can be effectively utilized within a decentralized framework.
The excitement around this innovation is palpable, with over 20% of Sui’s total value locked (TVL) now attributed to Bitcoin DeFi assets. The success of Phase 1 was underscored by a remarkable $10 million in tBTC supplied via Alphalend, with close to half of that amount being actively borrowed. This active participation showcases a burgeoning interest in Bitcoin-backed credit markets and other financial mechanisms on Sui.
With a mere fraction of Bitcoin’s 19.5 million circulating coins previously employed in DeFi—largely concentrated on Ethereum—Sui is emerging as a viable alternative. As users increasingly recognize the potential of Bitcoin in DeFi, Sui is introducing innovative products, including Bitcoin-backed lending, trading, and yield strategies. The introduction of tBTC is positioning Sui as a new hub for Bitcoin in the DeFi landscape.
As part of Phase 2, the tBTC integration on Sui will feature several key enhancements:
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Seamless Cross-Chain Flow: Through the integration with Wormhole, users can now effortlessly bridge BTC from Ethereum to Sui using the Threshold App. This opens up more flexible opportunities for Bitcoin users looking to tap into Sui’s DeFi markets.
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AlphaFi Auto-Looping Vault: This new vault mechanism allows users to compound lending rewards multiple times a day by automatically looping deposited tBTC in Alphalend’s money market, ensuring optimized returns while minimizing performance fees.
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Community Engagement Campaigns: Upcoming initiatives will help both new and seasoned DeFi users maximize their tBTC’s utility within the Sui ecosystem, providing avenues for deeper participation.
- Expanded Liquidity Options: The addition of new tBTC pool pairs on Bluefin enhances composability, further solidifying its role in growing Sui’s BitcoinFi ecosystem.
The progress made in Phase 1 has made a strong case for Bitcoin’s integration and utilization within Sui, as evidenced by the millions of dollars in liquidity and active user engagement across various DeFi activities. Stakeholders are optimistic about this next phase, which is seen as a decisive step toward mainstream adoption and value generation in the Bitcoin finance landscape.
According to the CEO of Threshold Labs, the demand for trust-minimized Bitcoin on the blockchain signals a clear product-market fit that Sui has effectively embraced. The Co-Founder of Mysten Labs echoed these sentiments, highlighting that Sui’s unique capabilities in unlocking Bitcoin utility position it well within the crypto ecosystem.
As the Phase 2 initiatives unfold, stakeholders are encouraged to participate by leveraging the tBTC offerings via various platforms, thereby capitalizing on the new opportunities while contributing to the expanding BitcoinFi landscape on Sui.

