Starknet Launches strkBTC: New Wrapped Bitcoin Token with Built-In Privacy

Starknet has officially deployed strkBTC, a zero-knowledge Bitcoin wrapper that enables private balances and confidential transfers on Ethereum’s Layer 2.

By Matthew Clarke | Edited by Julia Sakovich Published: , Updated:
Starknet Launches strkBTC: New Wrapped Bitcoin Token with Built-In Privacy
By wrapping Bitcoin in ZK-STARK proofs, Starknet is turning the public ledger into a private digital cash system. Photo: Pexels

Starknet, the Ethereum Layer 2 network developed by StarkWare, officially launched strkBTC. This new Bitcoin-based asset is designed to provide what many in the industry consider the “missing piece” for Bitcoin: institutional-grade privacy combined with decentralized finance (DeFi) composability. By utilizing Starknet’s zero-knowledge cryptography, strkBTC allows users to shield their balances and transactions while remaining fully integrated with the broader ecosystem.

Closing the Drapes: Privacy as a Modern Necessity

The launch comes at a critical time for blockchain security. According to data from CertiK, there were 34 verified “wrench attacks” and physical identity compromises globally through early May 2026, which is a 41% increase compared to the previous year. The rise of sophisticated AI tools has allowed attackers to connect public wallet addresses to physical identities with up to 90% precision.

Damian Chen, VP of Growth at the Starknet Foundation, emphasized the urgency of this shift during the launch:

“Bitcoin is the most sovereign money ever created, and also the least private money most people have ever used. For fifteen years, we told ourselves the public ledger was a feature. But in 2026, it has become a map into our private lives. We are launching strkBTC because the world has changed since 2008.”

How strkBTC Works: Shielding and Compliance

Unlike traditional “mixers” or privacy coins that have faced regulatory headwinds, strkBTC is built for a “compliance-ready” future. It functions as a technical wrapper on Starknet, employing several key features, such as shielded balance and auditable screening.

Eli Ben-Sasson, CEO of StarkWare and a co-founder of Zcash, noted that strkBTC represents a significant evolution of the concepts he helped pioneer. He described the asset as “private digital cash—the way it should be.”

Roadmap: From Federation to BitVM

At launch, strkBTC operates through a federated bridge supported by five major institutions: Twinstake, NEAR Intents, Luganodes, UTXO, and Xverse. However, this is only the first phase of a broader roadmap.

Future upgrades aim to move toward a fully trustless model. This includes integrating BitVM to reduce trust assumptions and eventually leveraging a potential OP_CAT soft fork on the Bitcoin mainnet. Such an upgrade would allow Bitcoin to natively verify Starknet proofs, creating a seamless, trustless bridge for private Bitcoin transactions.

Bitcoin, DeFi & FinTech, News