Users can toggle between public and shielded modes, and legal auditing will be available through viewing keys under third-party control.
Starknet is preparing the launch of strkBTC, a Bitcoin-based wrapped token designed to provide shielded balances and confidential transfers within decentralized finance applications, without sacrificing composability.
The token is issued deterministically upon verifiable BTC deposits, eliminating discretion from the minting process. Privacy protections operate at the protocol level, with no reliance on custodians, wallets, or third-party applications. According to the team, this architecture preserves auditability and compatibility with risk management. The token will also be eligible for Bitcoin staking on the network, allowing users to generate yield while keeping their balances under protection.
Eli Ben-Sasson, co-founder of StarkWare and board member of the Starknet Foundation, described strkBTC as a break from the historical tension between privacy and programmability. “With strkBTC, Bitcoin exposure can move through the DeFi ecosystem with private balances and transfers without breaking composability or isolating capital.” He defined privacy as “a fundamental requirement for participation in markets.”
James Strudwick, executive director of the Starknet Foundation, noted that Bitcoin capital has historically been underutilized due to certain usability and trust constraints. He argued that turning Bitcoin into a productive financial asset requires a deliberate path toward trust minimization and transparency, with the goal of transforming it from “sleeping capital” into an active, integrated financial asset.
strkBTC will operate in two modes. In unshielded mode, it functions as a standard token with public balances and transfers. In shielded mode, ownership and transaction details are hidden from the public, with a selective disclosure tool available upon legal request. To enable this, users generate a viewing key registered through a third party with threshold control, allowing an audit trail to be reconstructed for a specific user without compromising the privacy of the rest of the network.
Damian Chen, vice president of growth at the Starknet Foundation, argued that infrastructure-level privacy could attract institutional capital that has so far avoided public blockchain markets, by eliminating exposure of sensitive positions, counterparties, and proprietary strategies. strkBTC is part of Starknet’s strategy to integrate Bitcoin into decentralized finance through zero-knowledge cryptography.
