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UNO · 200w

The Unobtanium Github that is maintained by UNO developer Bryce Wiener has been updated. There is a hardfork ahead at block 1,040,000 to improve mining rewards. Please recompile all Unobtanium wallets before block 1,040,000

Unobtanium integration/staging tree

What is Unobtanium?

Unobtanium is an experimental new digital currency that enables instant payments to anyone, anywhere in the world. Unobtanium uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Unobtanium is the name of open source software which enables the use of this currency.

For more information, as well as an immediately useable, binary version of the Unobtanium software, see


Unobtanium is released under the terms of the MIT license. See COPYING for more information or see

Development process

Developers work in their own trees, then submit pull requests when they think their feature or bug fix is ready.

If it is a simple/trivial/non-controversial change, then one of the Unobtanium development team members simply pulls it.

If it is a more complicated or potentially controversial change, then the patch submitter will be asked to start a discussion (if they haven't already) on CryptoCoinTalk.

The patch will be accepted if there is broad consensus that it is a good thing. Developers should expect to rework and resubmit patches if the code doesn't match the project's coding conventions (see doc/ or are controversial.

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Unobtanium.


Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

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