<li><a href="https://download.wpsoftware.net/bitcoin/wizardry/cryptonote-whitepaper.pdf">CryptoNote Whitepaper</a> containing an innovative ring-signature scheme</li>
</ul>
+<a href="http://sagemath.org/">Sage</a> notebooks:
+<ul>
+<li><a href="secp256k1.ecdsa.sage">ECDSA with secp256k1</a>
+</ul>
+
Edit this page at <a href="https://github.com/TheBlueMatt/bitcoinninja">https://github.com/TheBlueMatt/bitcoinninja</a>
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