LICENSE

Copyright (c) 2013 Piotr Narewski
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NON-COMMERCIAL USE
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As the explicit author of this software I grant a permission to use it in either an original or
a modified form, free of charge and without a need for an explicit permission, but only for a 
non-commercial purposes and only to individuals (phisical persons), not to any legal entities.


COMMERCIAL USE
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If you want to use this software in a commercial application I can sell you any type of license.
The price depends on a type of your business and a kind of the license you need.
A license may also come with a technical support, if you can afford it.
I can also turn this code into any application for your business, including closed source apps.


secp256k1
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The implementation of the native ECDSA speedup package "btc/newec" is based on the code created 
by Pieter Wuille. The code itself has been completely rewritten, but the original author deserves
a credit for all the algorithms.
 * https://github.com/sipa/secp256k1/blob/master/COPYING


bitcoin-qt
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Some parts of the source code (e.g. "btc/target.go") and some test vectors ("btc/test/*.json")
were taken from the original (satoshi's) bitcoin client.
 * https://github.com/bitcoin/bitcoin/blob/master/COPYING