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
A Bitcoin mining pool, called GHash and operated by an anonymous entity called CEX.io, just reached 51% of total network mining power today. Bitcoin is no longer decentralized. This note describes what we should do about it.
Juju is the new system from the folks at Canonical for automating
cloud infrastructure tasks. It enables you to easily build and
maintain your infrastructure with convenient command-line and web
interfaces. In this article, we take a look at how to deploy
HyperDex on AWS using Juju.
Emin Gün Sirer
Hacker and professor at Cornell, with interests that span distributed
systems, OSes and networking. Current projects include HyperDex, OpenReplica
and the Nexus OS. more...