Threshold Network’s tBTC, a decentralized ERC-20 token backed 1:1 by Bitcoin, has officially launched on the Sui blockchain, opening the door for massive new liquidity and a more accessible BTCFi experience. This strategic integration enables users to mint tBTC directly on Sui, effectively bridging Bitcoin's value into the Sui ecosystem without traditional intermediaries. The move has already helped bring in over $500 million worth of Bitcoin liquidity, accounting for more than 10% of the total value locked (TVL) in Sui-based DeFi applications.

According to Adeniyi Abiodun, co-founder and Chief Product Officer at Mysten Labs—the team behind Sui—this milestone is more than just a technical upgrade. “tBTC is expected to bring a massive amount of Bitcoin liquidity to Sui, creating a bridge that truly matters—not just for institutions but for everyday people who love Bitcoin,” he said. “This new integration opens another door to accessible, sovereign BTCfi participation.”

BTCFi and tBTC: Bringing Bitcoin Utility to DeFi

BTCFi is the emerging ecosystem of decentralized finance products designed specifically for Bitcoin. Traditionally seen as a passive store of value, Bitcoin’s use in DeFi has been limited due to technical hurdles and lack of integration with newer blockchains. tBTC addresses that gap by wrapping Bitcoin into a decentralized, trust-minimized form that can easily interact with smart contract platforms like Sui.

Since February, nearly 600 BTC—worth over $65 million—has been bridged into the Sui ecosystem. This shows growing appetite among users to unlock Bitcoin’s yield potential. Threshold Network’s tBTC aims to accelerate this trend by offering secure and transparent access to Bitcoin-backed assets in the Sui environment.

Threshold co-founder Callan Sarre emphasized the broader vision: “Bitcoin was designed to be used, not locked away. With tBTC coming on Sui, we’re combining the security of threshold cryptography with a high-throughput network to create a new standard for Bitcoin utility.”

Why Sui?

The Sui blockchain stands out for its sub-second finality, low transaction costs, and horizontally scalable architecture. This makes it an ideal platform for financial applications that require high performance and strong user experience—something essential for the mass adoption of BTCFi.

With this integration, users can now mint tBTC directly on Sui by depositing their BTC, avoiding bridges or wrapped intermediaries. This seamless process allows users to utilize tBTC across the growing Sui-based DeFi ecosystem, from yield farming to lending and trading. The added liquidity also enhances the efficiency and depth of existing DeFi platforms on Sui, such as DeepBook, the chain’s native central limit order book.

Threshold Network and the Future of BTCFi

Threshold Network is the team behind tBTC. They specialize in decentralized cryptography and blockchain infrastructure to support secure and private operations. Their mission is to unlock new DeFi use cases for Bitcoin while preserving its decentralized nature.

At the time of writing, tBTC has a market cap of over $570 million with a circulating supply of 5,265 tokens. Its deployment on Sui not only extends its reach but also showcases how permissionless, secure, and scalable blockchain environments can reimagine Bitcoin’s role in decentralized finance.

Conclusion

The debut of tBTC on Sui marks a major step forward for BTCFi and opens up a path for billions of dollars in Bitcoin liquidity to enter DeFi. With strong backing from both Threshold and Mysten Labs, and growing developer momentum on Sui, this integration sets the stage for the next evolution of Bitcoin utility—real-time, permissionless, and fully on-chain.

Learn more:

• Threshold Network
• Sui Blockchain
• CoinDesk article on tBTC and Sui