all the things!

Namecoin is a decentralized open source information registration and transfer system based on the Bitcoin cryptocurrency.

What does it do?

  • Securely record and transfer arbitrary names (keys).
  • Attach a value (data) to the names
    (up to 520 bytes, more in the future).
  • Transact namecoins, the digital currency (ℕ, NMC).

Namecoin was the first fork of Bitcoin and still is one of the most innovative altcoins. It was first to implement merged mining and a decentralized DNS. Namecoin squares Zooko's Triangle!

What can it be used for?

  • Protect free-speech rights online by making the web more resistant to censorship.
  • Access websites using the .bit domain (with TLS/SSL).
  • Store identity information such as email, GPG key, BTC address, TLS fingerprints, Bitmessage address, etc.
  • Human readable Tor .onion names/domains.
  • File signatures, Voting, bonds/stocks,/shares, web of trust, escrow and notary services (to be implemented).

Find more information in the Namecoin wiki or join us on the Namecoin forum.


2015-11-10 Out now: NMControl v0.8.1

2015-10-13 A vulnerability was found in Bitcoin Core. It allows an attack from malicious peers in the local network via UPNP. Namecoin is affected, too, so everybody should turn off UPNP until further notice.

2015-08-13 Fix for OpenSSL Consensus Vulnerability has been deployed on 100% of mining hashpower. Users of NamecoinQ (i.e. namecoind/Namecoin-Qt 0.3.x) are on semi-SPV security, and should wait for at least 6 confirmations for incoming transactions. Users of Namecoin Core (in beta) are on full-node security. Thanks to the miners for their quick action and everyone else who assisted in the response.

2015-07-29 Warning: severe vulnerability disclosed - be careful.

2015-05-19 Check out the Namecoin Bounty Cornucopia.

2015-04-17 The Namecoin blockchain is now four years old. Happy birthday!

2015-03-20 Interview with Namecoin lead developer Daniel Kraft.

2014-12-19 Softfork upcoming with block 212500 (around New Year's Eve). Pool operators and solo miners please update to v0.3.80 asap. Regular users are recommended to update, too. See the Release notes.

2014-12-16 As of block 210000 the Namecoin block reward halved to 25NMC. Happy halving day!

2014-04-20 Thanks to Shobute for designing and Indolering for pushing the new website.

For the latest news go to the Namecoin forum or check out r/namecoin.

Official anouncements will also be made on this BitcoinTalk thread.


Help keep us strong.

  • NMC: NDtPuyg3adscr6HCE1GUiSsKPtA8ewKgz3
  • BTC: 17Si1rdVd6gaYbwLq9NkXtGV9Qzt3NmTKa


With Namecoin you can make a difference. We need your help to free information, especially in wiki editing, marketing and coding. You are welcome at the forum. There may be bounties, too.