Posts from June 2014

This is a quick blog post to dispel a common Bitcoin misconception/myth involving voting power.
We outline a small change to the Bitcoin mining protocol that rules out big, public mining pools. It preserves the current investment in Bitcoin by both existing users and by existing miners. It presents a fix to GHash's recent 51% excursion.
LevelDB is a popular data back end and in use at Google, Facebook, and many startups. In this article we discuss some concurrency improvements we've made to LevelDB as part of the HyperLevelDB project.
There seems to be a lot of confusion over the kinds of attacks that a Bitcoin mining monopoly can engage in. We clarify the space of attacks available to a Bitcoin mining monopoly.
A Bitcoin mining pool, called GHash and operated by an anonymous entity called, just reached 51% of total network mining power today. Bitcoin is no longer decentralized. This note describes what we should do about it.