What is Bitcoin Knots?

Bitcoin Knots is a derivative of Bitcoin Core (since 2011 December) with a collection of improvements maintained out of the master git tree. More details on the enhancements in Bitcoin Knots are listed below the downloads.

Please note: Bitcoin Knots includes some new features that have not yet been tested to the same extent as those included in Bitcoin Core. While we make a reasonable effort to ensure they are safe, there are no guarantees. Use of Bitcoin Knots is (as with Bitcoin Core) always at your own risk!

Download Bitcoin Knots

Latest version: 0.13.0.knots20160814 (release notes)

Please note: This webserver, like almost all webservers, is not under our exclusive physical access, and therefore cannot be trusted to not be compromised. Always verify the correct PGP signature (from Luke Dashjr's PGP key) on any downloads to avoid risk of malware. Note that his PGP key is also hosted on bitcoin.org, so you can (and should, if you don't already have it from another trusted source) download from at least two independent webservers and ensure they match.

Click here for SHA256 hashes of all downloads, signed by Luke Dashjr's PGP key

Enhancement sets

Features that will be available in the next release of Bitcoin Core are highlighted in green.

Packaging cleanups ("syslibs")

Adds options to build using system LevelDB, libsecp256k1, and UniValue libraries, and/or without the libevent library (see ./configure --help for usage).

Please note this may be dangerous and make theft from you possible if used with versions of the LevelDB or libsecp256k1 libraries which have not been audited to meet the bug-for-bug compatibility required by Bitcoin's consensus protocol. These options are disabled by default for this reason.

It also adds options to disable building bitcoin-cli or bitcoin-tx individually, and avoids involving foreign git trees in the build.

See also:

Functional and policy enhancements

This is a collection of fixes, and various other improvements:

Improved pattern-matching spam filter

Bitcoin Knots includes a policy change that improves the spam filtering capabilities using matching of patterns identified in spam.

Specifically, spam created by the following are identified and ignored:

Note that the organizations and people responsible for the spam are not filtered, only the spam itself. This feature can be disabled using the -spamfilter=0 command-line option, or in the GUI Options dialog.


Bitcoin Knots began in 2011 December as Bitcoin Next-Test, a derivative of Bitcoin Core's "master" branch with upcoming and proposed features merged in manner as unbiased as possible toward the changes themselves. In 2014, due to time constraints and a desire to maintain a more stable and well-maintained derivative, I began instead to base the branch off the latest stable release, and include only modifications that both looked reasonably safe and I did not personally consider problematic or flawed; along with this change, since it was no longer an unbiased derivative, I renamed it to Bitcoin Core "ljr", and later Bitcoin LJR. With 0.12 in 2016, the project was once again renamed (to "Bitcoin Knots") and has a goal of being a general enhanced derivative of the reference Bitcoin Core software.