BIPs bitcoin improvement proposals

156 - Dandelion - Privacy Enhancing Routing

<pre> BIP: 156 Layer: Peer Services Title: Dandelion - Privacy Enhancing Routing Author: Brad Denby <bdenby@cmu.edu> Andrew Miller <soc1024@illinois.edu> Giulia Fanti <gfanti@andrew.cmu.edu> Surya Bakshi <sbakshi3@illinois.edu> Shaileshh Bojja Venkatakrishnan <shaileshh.bv@gmail.com> Pramod Viswanath <pramodv@illinois.edu> Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0156 Status: Rejected Type: Standards Track Created: 2017-06-09 License: CC0-1.0 </pre> ==Abstract== Bitcoin's transaction spreading protocol is vulnerable to deanonymization attacks. Dandelion is a transaction routing mechanism that provides formal anonymity guarantees against these attacks. When a node generates a transaction without Dandelion, it transmits that transaction to its peers with independent, exponential delays. This approach, known as diffusion in academia, allows network adversaries to link transactions to IP addresses....