馃敀 Kohaku Unveils Private Information Retrieval Protocol for Ethereum

馃敀 Ethereum Privacy Breakthrough

By Houdini Swap
Oct 13, 2025, 3:56 PM
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Kohaku has announced a new privacy protocol for Ethereum using Private Information Retrieval (PIR) technology.​

Key Features:

  • Enables private data queries from Ethereum nodes
  • Servers cannot see what data users access
  • Avoids downloading entire blockchain datasets
  • Uses 1990s cryptographic methods with modern applications

What This Means: PIR allows users to query large databases like Ethereum without revealing their specific interests to node operators.​ This addresses a major privacy gap in blockchain interactions.​

Future Plans:

  • Private payments integration planned
  • Cross-chain privacy enhancements possible
  • Collaboration opportunities with existing privacy tools

The protocol represents significant progress in Ethereum privacy infrastructure, potentially enabling more confidential blockchain interactions without compromising functionality.​

Sources

Kohaku's announcement marks progress in Ethereum privacy, introducing a protocol for private data retrieval from nodes using Private Information Retrieval (PIR). PIR, a 1990s cryptographic primitive with limited adoption, enables querying large databases like Ethereum without

Nico
Nico
@ncsgy

1/ It鈥檚 time for us to go public so you all can go private, and it鈥檚 time for us to be bold so you all can be safe. As part of our work with the @ethereumfndn, @VitalikButerin and I are proud to be the faces of Kohaku. 馃У馃憞

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