The cryptocurrency community on X has been dominated by influential figures advocating for the adoption of Zcash as privacy comes under increasing threat from governments and regulators.
Prominent figures like the Winklevoss twins, Naval Ravikant, and Balaji Srinivasan are backing the adoption of Zcash (ZEC). The success of Zcash could potentially prompt the Bitcoin ecosystem to push for more privacy features by revisiting the reactivation of OP_CAT, as suggested by Eli Ben-Sasson, the founder of StarkWare and a renowned mathematician who played a key role in pioneering zero-knowledge proofs.
Zcash’s Roots in Bitcoin
In 2014, Ben-Sasson and his co-authors published the white paper “Zerocash: Decentralized Anonymous Payments from Bitcoin,” marking the culmination of six years of theoretical work. The technology of zero-knowledge proofs, which had been under development since 2008, was deemed incredibly powerful even without a specific use case at the time.
Zcash has been a hot topic on Crypto Twitter for months.
However, not many are aware of the backstory behind the leading cryptocurrency in the privacy sector.
Join the conversation with @EliBenSasson to learn more about the history of @Zcash and the underlying ZK technology.
Live discussion with @rkbaggs!https://t.co/ZRh96OzBD7
— Gareth Jenkinson (@gazza_jenks) November 10, 2025
According to Ben-Sasson, the pivotal moment came in 2013 when he presented ZK technology at an early Bitcoin conference. This caught the attention of influential Bitcoin pioneers like Greg Maxwell and Mike Hearn, who recognized the potential benefits of integrating ZK-proofs into Bitcoin.
“We realized that zero-knowledge proofs could address key issues of scalability and privacy in blockchains. They provide a level of integrity that ensures correctness even when transactions are not directly observed,” Ben-Sasson shared during a live interview on Cointelegraph’s Chain Reaction show on X.
Despite the advantages of ZK-proofs, Bitcoin’s code currently does not support their implementation due to a decision made by Satoshi Nakamoto years ago, resulting in a lack of privacy in Bitcoin transactions.
The Role of OP_CAT in Bitcoin Privacy
Ben-Sasson emphasized that Bitcoin could achieve native privacy and unlimited scalability by reintroducing OP_CAT, an OP_Code disabled by Satoshi Nakamoto in 2010.
In light of Zcash’s resurgence in 2025, there is potential for Bitcoin to prioritize privacy enhancements, with Ben-Sasson stating, “I hope that the Bitcoin community will embrace technologies like OP_CAT and OP_STARK to enhance security, privacy, scalability, and programmability for Bitcoin’s future.”
Rumors are circulating about Bitcoin hodlers switching to Zcash 🤔🔏
Why the shift? Some Bitcoin enthusiasts seek enhanced transaction privacy.
Discover how ZK-proofs and OP_CAT could unlock privacy for Bitcoin 🗝️👇
Exclusive insights… pic.twitter.com/UTwb6U2hbg
— Gareth Jenkinson (@gazza_jenks) November 12, 2025
Ben-Sasson highlighted the simplicity of integrating OP_CAT into Bitcoin through a soft fork that adds just nine lines of code, originally introduced by Satoshi. This small adjustment could pave the way for improved privacy and scalability within the Bitcoin network.
Prominent voices in the Bitcoin community have largely remained silent on the topic of Zcash, with minimal discussion around enhancing privacy in Bitcoin transactions. However, Gemini co-founders Cameron and Tyler Winklevoss have expressed their belief in Zcash’s ability to complement Bitcoin.
The Winklevoss twins made headlines with the launch of Cypherpunk Technologies, a ZEC-based treasury company, following their acquisition and rebranding of Nasdaq-listed Leap Therapeutics in November.
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