+Implementations of cool things:
+<ul>
+<li><a href="https://github.com/bitcoin/bitcoin">The one that started it all</a></li>
+<li><a href="https://github.com/unsystem/paypub">PayPub: Trustless payments for information publishing on Bitcoin</a></li>
+<li><a href="https://github.com/zw/PoLtree/">proving Bitcoin liabilities, in Clojure.</a> or <a href="https://github.com/olalonde/proof-of-liabilities">Proof of Liabilities, in JavaScript</a></li>
+<li><a href="https://github.com/petertodd/timelock">Create a secret key that can be decrypted in a known amount of time using parallel-serial hash chains.</a></li>
+<li><a href="https://github.com/Blockstream/contracthashtool">Pay to Contract Hash calculator</a></li>
+<li><a href="https://github.com/vinumeris/lighthouse/blob/master/docs/Design%20doc.md">Lighthouse - simple SIGHASH_ANYONECANPAY multi-party payments</a></li>
+<li><a href="https://lists.linuxfoundation.org/pipermail/lightning-dev/2015-November/000344.html">The "Mysterious 57" scriptPubkey template which can only be spent by revealing its key.</a></li>
+<li><a href="https://github.com/bitcoinfibre/bitcoinfibre">Bitcoin FIBRE: A fast-block-relay implementation using UDP and Forward Error Correction with super reliable performance</a></li>
+</ul>
+
+Edit this page at <a href="https://git.bitcoin.ninja/?p=bitcoinninja">https://git.bitcoin.ninja?p=bitcoinninja</a><br>
+<br>
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