Namecoin is an experimental open-source technology which improves decentralization, security, censorship resistance, privacy, and speed of certain components of the Internet infrastructure such as DNS and identities.

(For the technically minded, Namecoin is a key/value pair registration and transfer system based on the Bitcoin technology.)

Bitcoin frees money – Namecoin frees DNS, identities, and other technologies.

What can Namecoin be used for?

  • Protect free-speech rights online by making the web more resistant to censorship.
  • Attach identity information such as GPG and OTR keys and email, Bitcoin, and Bitmessage addresses to an identity of your choice.
  • Human-meaningful Tor .onion domains.
  • Decentralized TLS (HTTPS) certificate validation, backed by blockchain consensus.
  • Access websites using the .bit top-level domain.

What does Namecoin do under the hood?

  • Securely record and transfer arbitrary names (keys).
  • Attach a value (data) to the names (up to 520 bytes).
  • Transact the digital currency namecoins (NMC).
  • Like bitcoins, Namecoin names are difficult to censor or seize.
  • Lookups do not generate network traffic (improves privacy).

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 was also the first solution to Zooko’s Triangle, the long-standing problem of producing a naming system that is simultaneously secure, decentralized, and human-meaningful.

More Information


(RSS Feed)

rbm on Cirrus CI

2021-06-09 rbm (Reproducible Build Manager) is a quite nice system for reproducible builds. rbm was originally created by Nicolas Vigier from the Tor Browser Team as a replacement for Gitian (which was previously used by Tor Browser and is still used by Bitcoin Core). rbm has since been adopted by other projects like Ricochet and Namecoin (in particular, we use rbm for building ncdns). Recently, I’ve been doing some mad science experiments with running rbm on Cirrus CI infrastructure.

Read more…

Transaction queue for Namecoin Core

2021-06-01 Lately, work aiming to simplify the RPC API for name management has been proceeding. This is done both for the sake of improvement itself, and to make it easier to write GUIs for Namecoin.

Read more…

Deterministic salts in Namecoin Core

2021-05-26 Namecoin Core will, starting version 22.0, no longer require that a salt or TXID be provided in the name_firstupdate RPC call. If no transaction ID is provided, the wallet will perform a linear scan over its unspent outputs to attempt to find a matching transaction. If no salt is provided, it will assume that it can be deterministically generated from the private key using the same scheme already implemented in Electrum-NMC.

Read more…

Freenode Undergoing Hostile Takeover – Abandon Ship

2021-05-19 The Freenode IRC network is actively undergoing a hostile takeover by London Trust Media Holdings. All Freenode staff have resigned in protest. We strongly recommend that all Namecoin community members who are accessing our IRC channels via Freenode abandon ship immediately, and move to our channels on Hackint, OFTC, or

Funding from NLnet

2021-04-30 We are happy to announce that we have been selected by NLnet Foundation to receive funding. A total of €50’000 (roughly US$60’645) has been pledged toward our development work.

Read more…

Namecoin Released 10 Years Ago Today

2021-04-18 Today, April 18, 2021, marks 10 years since Vincent Durham first released Namecoin. We’d like to wish a very happy birthday to the Namecoin community, and we look forward to the next 10 years (and beyond) of hijacking-resistant, censorship-resistant naming and PKI.

ncdns v0.1.2 Released

2021-03-11 We’ve released ncdns v0.1.2 for Windows. This release includes a fix for an upstream issue that impacted Windows service support. Binaries for non-Windows platforms are not yet available; we expect to release those soon.

Read more…

Namecoin Core Released

2021-03-07 Namecoin Core has been released on the Downloads page.

Read more…

Nightly Builds of ncdns and certinject

2021-03-04 The Beta Downloads page now includes Nightly builds of ncdns (both the plain binaries and the Windows installer) and certinject. For the #reckless among you who want to help us test new features or identify bugs before a release, the Nightly builds are a great way to do so.

Namecoin Core Name Update GUI

2021-02-16 Now that Namecoin Core’s Name Renewal GUI is complete (it’s been merged and will be in Namecoin Core v22.0), it’s time to move on to the name_update GUI. This forward-port was pretty uneventful, so rather than boring you with details, here’s a screenshot:

Read more…

Earlier news

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. You can donate to the Namecoin project here.


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