This article explores an observation in the use of BLS signature aggregation within a production blockchain. When it is used for batch verification, the possibility of "conjugate signatures" could allow colluding parties to undermine system properties of accountability and non-repudiation.

Operating a Solana validator under the Solana Foundation Delegation Program requires fast, reliable, and secure infrastructure decisions. Rather than adopting heavyweight monitoring frameworks, we chose a deliberately minimalist approach grounded in Unix principles. This article explains the tradeoffs behind that decision.