ZK驅動的比特幣隱私方案正式上線Starknet

strkBTC officially launched on Starknet on May 12, leveraging Starknet's ZK technology to provide advanced shielding mechanisms while meeting all compliance requirements. This privacy protection mechanism responds to the growing demand for privacy solutions and serves as a practical countermeasure against robberies and threats stemming from public ledgers revealing large Bitcoin holdings. As personal security concerns for Bitcoin holders become increasingly severe, privacy protection is not just a technological innovation but could potentially save lives.

Damian Chen, Vice President of the Starknet Foundation, stated: "When criminals monitor public ledgers, use AI to track wallets, and attack others for cryptocurrency, privacy is no longer just a lofty ideal."

"Privacy is both a necessity and a right. We urgently need privacy solutions that can 'draw the curtains,' meaning criminals can no longer look through the window to conspire against their targets."

Private Digital Cash, As It Was Meant to Be

Eli Ben-Sasson, a pioneer in privacy, CEO of StarkWare, and co-founder of Zcash, believes that the momentum behind strkBTC can be translated into "private digital cash—as it was meant to be."

He stated that strkBTC represents a significant advancement of some of the ideas that originally drove the Zcash project. The strkBTC economy will allow users and institutions to conceal balances, which is essential for ensuring rights, security, and driving adoption. In the future, users will also be able to participate in DeFi while maintaining full compliance and selective disclosure capabilities.

What Are the Core Functions of strkBTC Currently?

• Re-anonymization: A mechanism to bridge back to new, unlinked Bitcoin addresses.
• Compliance-Ready: Full auditability for tax and legal purposes through viewing key technology and integrated third-party asset screening to prevent prohibited or sanctioned assets from entering the privacy pool.

What Features Are Coming Soon?

• Confidential DeFi: Shielded lending, trading, and yield generation on Starknet while maintaining credible utility.

The Security Mission: Privacy as Personal Safety

Starknet has long been a leader in privacy, utilizing zero-knowledge STARK cryptography co-invented by Ben-Sasson.

STARKs combine scalability with strong privacy guarantees, and strkBTC applies this technology to the most pressing problem currently faced by Bitcoin holders: Bitcoin-related crime.

This link is no longer theoretical but actionable. In 2025, armed robberies and extortion cases targeting Bitcoin holders increased by 75%. The Starknet team has been closely monitoring this trend. According to recent estimates, AI-powered tools can now link public wallet addresses to real-world identities with up to 90% accuracy.

Chen pointed out that the default transparency of blockchains has severe consequences in the absence of effective protection. He stated that for individuals, the risk is personal safety; for institutions, the issue is adoption. Many serious financial institutions cannot operate at scale when every balance, transaction, and treasury activity is visible to the public.

He added: "Bitcoin is the most sovereign currency ever created, but it's also the least private most people have ever used. For fifteen years, we told ourselves public ledgers were a feature, but in 2026, they have become a map to our private lives."

"When people show up at your doorstep because of a wallet balance they saw online, transparency is no longer a feature—it's exposure. That's why we launched strkBTC, to respond to how the world has changed since 2008."

The situation has become severe in France, which has recorded 41 cryptocurrency-related kidnapping cases this year. Recently, a French family was attacked because their crypto assets were identified through a leaked dataset and public blockchain activity. The attackers weren't guessing; they knew for certain.

strkBTC is a direct response to the "$5 wrench attack" (where attackers use low-cost violent means to force victims to hand over private keys or assets). It is for those who want to hold Bitcoin without broadcasting their entire financial life to anyone with an internet connection.

How strkBTC Works

In essence, strkBTC is a technical wrapper for Bitcoin designed to bring Bitcoin into a shielded environment on Starknet, allowing users and institutions to protect their balances and transaction history while retaining the ability to comply with audits, tax reporting, and legal requirements.

In practice, strkBTC allows the underlying value to enter a "shielded mode"; once in this mode, balances and transaction history are hidden from the public.

Starkly different from older privacy protocols, it is not designed as an opaque black box but is built for regulatory disclosure under legitimate requests. The system automatically generates viewing keys. When faced with a legitimate regulatory request, an independent third-party compliance reviewer can use this key to share limited, specific data with tax authorities, auditors, or other regulators. This compliant transaction mode unlocks a vast market previously unable to access BTC due to compliance restrictions. Meanwhile, ordinary users also have their own viewing keys, allowing them to unshield transactions according to their own needs, while all information remains absolutely private from the public.

It is this compliance layer, guaranteed by designated third-party audit entities, that activates many financial activities previously hindered by a lack of transaction confidentiality. These include:

• Private Payroll: Paying employees without exposing individual salaries or corporate treasury movements.
• Supplier Payments: Conducting B2B transfers without revealing business relationships, pricing, or strategic trade flows.
• Strategic Capital Deployment: Moving large positions without signaling intent to the market or attracting predatory observers.

The ultimate goal is to achieve superior usability: allowing Bitcoin to function globally as private on-chain cash without forcing users to make a difficult choice between confidentiality and accountability.

A Collective Effort Towards Technological Sovereignty

The realization of strkBTC is the result of a broad collective effort from ecosystem contributors, including Starknet core developers, alliance partners, wallet providers, audit infrastructure providers, and liquidity providers dedicated to expanding Bitcoin's utility. Core project members like Eli Ben-Sasson and Chen emphasize that strkBTC, as a now fully operational technical wrapper, builds an immediate bridge between Bitcoin and Layer 2. Project leaders position it as a pragmatic and necessary tool. They understand the world cannot wait for a "perfect" technological milestone, thus prioritizing immediate utility that solves real-world pain points over theoretical purity.

Technical Roadmap

Looking ahead, the technological development of strkBTC mainly includes the following directions:

• Quantum Resistance Research: StarkWare is developing quantum-resistant cryptography for strkBTC. StarkWare's Chief Product Officer, Avihu Levy, recently demonstrated research on making Bitcoin quantum-resistant.
• BitVM Integration: The project is actively moving towards a 1-of-N security model via BitVM. This model ensures the system remains secure even if only one participant is honest, significantly reducing the required trust assumptions.
• Ultimate Goal: The long-term vision is to establish a fully trustless bridge powered by the OP_CAT soft fork, which would allow Bitcoin to natively verify Starknet proofs.

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