Vitalik Buterin, co-founder of Ethereum, is publishing a technical series on program obfuscation – a cryptographic technique that aims to hide how code works without revealing the data it processes. This idea could act like a “trustless trusted third party” but remains far from being ready for practical use due to its slow implementation.
Obfuscation turns a program into an encrypted version that still runs and produces the same outputs, while hiding how it works inside. The goal is to make programs untraceable, making them suitable for private, collusion-resistant voting systems. However, building secure obfuscation has been difficult, with previous attempts proving impossible in 2001.
Despite recent breakthroughs, current implementations are too slow for real use. Buterin compares this to the development of zero-knowledge proofs like SNARKs, which took years of optimization to become a practical tool. He believes that obfuscation could follow a similar path from theoretical breakthrough to usable tool, but with significant improvements needed.
In contrast to existing privacy coins like Monero, which hide transaction data on a live blockchain, Buterin’s obfuscation technique hides the program’s logic and code itself. Closing this gap is crucial for making obfuscation practical, and Buterin’s series aims to map the long-term potential of cryptographic tools in crypto.
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Source: https://www.coindesk.com/tech/2026/06/29/vitalik-buterin-says-crypto-s-most-powerful-idea-is-still-nowhere-near-ready