Blockstack is a new network for decentralized applications that aims to address the centralization at the application-layer of the internet.
Blockstack builds an alternate DNS and alternate public-key infrastructure. It's the first implementation of a decentralized DNS system on top of the Bitcoin blockchain. It combines DNS functionality with public key infrastructure and is primarily meant to be used by new blockchain applications.
Blockstack was founded in 2013 as "Onename" by Muneeb Ali & Ryan Shea and is based in New York, New York, United States.
In May 2017, at CoinDesk's "Consensus 2017" blockchain conference in New York, Blockstack released a decentralized browser add-on, described as "a kind of Netscape for the decentralized internet, running apps on a plethora of blockchains". The purpose of this add-on is to allow developers to use Blockstack's tools (decentralized identity, storage, and payments) to "create consumer-facing apps". The add-on works with any browser, including Chrome, Safari, and Firefox.
Blockstack has raised a total amount of $58.25M in 4 funding rounds as of Dec 4, 2017 when they raised $52.8M in a Initial Coin Offering funding. The company is backed by major players, including Union Square Ventures, AngelList founder Naval Ravikant, and Digital Currency Group.