tBTC Expands to Sui Network, Bridging Bitcoin to New DeFi Ecosystem

tBTC has launched on Sui, enabling decentralized, 1:1 Bitcoin-backed assets on a high-performance Layer 1 chain. Developed by Threshold Network and integrated in collaboration with Mysten Labs and interoperability provider Wormhole, the launch brings over $500 million in decentralized Bitcoin liquidity to the Sui blockchain.

Sui is now the first non-EVM Layer 1 blockchain to support direct minting of tBTC through the Threshold app, offering a new access point for Bitcoin holders seeking capital efficiency and yield generation within a modern DeFi environment.

“This new integration opens another door to accessible, sovereign BTCfi participation,” said Adeniyi Abiodun, Co-Founder and Chief Product Officer at Mysten Labs. “tBTC is expected to bring significant Bitcoin liquidity to Sui, benefiting both institutional and retail participants.”

A Strategic Alliance Between Security and Scalability

According to the team, this collaboration represents the convergence of Bitcoin’s decentralization ethos and Sui’s technical innovation. While Bitcoin offers unmatched monetary integrity and security, Sui delivers transaction finality in 400 milliseconds, near-zero fees, and the ability to process up to 297,000 transactions per second.

tBTC, a decentralized and trust-minimized version of Bitcoin, is backed 1:1 by BTC and utilizes threshold cryptography to eliminate the need for centralized custodians. It is already live on multiple chains and is now integrated into Sui, significantly broadening its accessibility and utility.

“Bitcoin was designed to be used, not locked away,” said Callan “Sap” Sarre, Co-Founder at Threshold Labs. “With tBTC on Sui, we are combining threshold cryptography with high-throughput infrastructure to create a new standard for Bitcoin in DeFi.”

Unlocking Bitcoin Utility Across the Sui DeFi Ecosystem

The integration enables direct minting of tBTC from native Bitcoin onto Sui, offering users a secure and permissionless way to engage with Bitcoin-based DeFi. tBTC will be deployed across several Sui-native protocols at launch, enabling a wide range of financial use cases:

• Bluefin: Provides efficient trading of tBTC pairs and liquidity provisioning
• Bucket Protocol: Allows users to borrow against tBTC as collateral
• AlphaLend: Offers lending and borrowing of tBTC for yield generation
• AlphaFi: Enables leveraged strategies using tBTC through auto-looped vaults

Since early 2025, Bitcoin-backed assets have grown to represent approximately 10 percent of Sui’s total value locked (TVL). With this integration, tBTC is expected to deepen Bitcoin’s role within the ecosystem and provide new avenues for both institutional and retail users to engage with decentralized finance.

How to Mint tBTC on Sui

Users can mint tBTC on the Sui Network through the Threshold app by following these steps:

1. Visit: dashboard.threshold.network/tBTC/mint
2. Connect a Sui-compatible wallet
3. Select “Sui” as the destination chain
4. Provide a Sui wallet address and a BTC return address
5. Deposit a minimum of 0.01 BTC to the generated address
6. Confirm the transaction in your wallet to complete minting

The process typically completes within one to three hours. A full tutorial is available here.

Laying the Foundation for Bitcoin’s Next Phase

This launch is part of a broader three-month initiative led by a coalition of ecosystem partners focused on building a sustainable Bitcoin DeFi architecture on Sui. Each participant is contributing to this next-generation financial layer:

• Sui Foundation: Providing infrastructure and long-term support for Bitcoin utility on Sui
• Bluefin: Facilitating deep liquidity for tBTC trading
• AlphaFi: Delivering advanced yield strategies with risk-adjusted exposure
• AlphaLend: Enabling Bitcoin-based lending and borrowing
• Bucket Protocol: Offering onchain liquidity through tBTC-backed collateralized debt positions

Both Threshold and Sui share a unified vision: to eliminate the perceived trade-off between decentralization and performance. Together, their integration redefines what Bitcoin can achieve within a modern, scalable DeFi environment.

SUI in 2025