mirror of https://github.com/zcash/zcash.git
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<h1 class="menu-title">The zcashd Book</h1>
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<main>
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<h1>Zcash 6.2.0
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<img align="right" width="120" height="80" src="doc/imgs/logo.png"></h1>
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<h2 id="what-is-zcash"><a class="header" href="#what-is-zcash">What is Zcash?</a></h2>
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<p><a href="https://z.cash/">Zcash</a> is HTTPS for money.</p>
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<p>Initially based on Bitcoin's design, Zcash has been developed from
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the Zerocash protocol to offer a far higher standard of privacy and
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anonymity. It uses a sophisticated zero-knowledge proving scheme to
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preserve confidentiality and hide the connections between shielded
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transactions. More technical details are available in our
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<a href="https://zips.z.cash/protocol/protocol.pdf">Protocol Specification</a>.</p>
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<h2 id="the-zcashd-full-node"><a class="header" href="#the-zcashd-full-node">The <code>zcashd</code> Full Node</a></h2>
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<p>This repository hosts the <code>zcashd</code> software, a Zcash consensus node
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implementation. It downloads and stores the entire history of Zcash
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transactions. Depending on the speed of your computer and network
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connection, the synchronization process could take several days.</p>
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<p align="center">
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<img src="doc/imgs/zcashd_screen.gif" height="500">
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</p>
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<p>The <code>zcashd</code> code is derived from a source fork of
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<a href="https://github.com/bitcoin/bitcoin">Bitcoin Core</a>. The code was forked
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initially from Bitcoin Core v0.11.2, and the two codebases have diverged
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substantially.</p>
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<h4 id="lock-security-warnings"><a class="header" href="#lock-security-warnings">:lock: Security Warnings</a></h4>
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<p>See important security warnings on the
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<a href="https://z.cash/support/security/">Security Information page</a>.</p>
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<p><strong>Zcash is experimental and a work in progress.</strong> Use it at your own risk.</p>
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<h4 id="ledger-deprecation-policy"><a class="header" href="#ledger-deprecation-policy">:ledger: Deprecation Policy</a></h4>
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<p>This release is considered deprecated 16 weeks after the release day. There
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is an automatic deprecation shutdown feature which will halt the node some
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time after this 16-week period. The automatic feature is based on block
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height.</p>
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<h2 id="other-zcash-implementations"><a class="header" href="#other-zcash-implementations">Other Zcash Implementations</a></h2>
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<p>The <a href="https://github.com/ZcashFoundation/zebra">Zebra</a> project offers a
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different Zcash consensus node implementation, written largely from the
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ground up.</p>
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<h2 id="getting-started"><a class="header" href="#getting-started">Getting Started</a></h2>
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<p>Please see our <a href="https://zcash.readthedocs.io/en/latest/rtd_pages/rtd_docs/user_guide.html">user
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guide</a>
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for instructions on joining the main Zcash network.</p>
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<h3 id="need-help"><a class="header" href="#need-help">Need Help?</a></h3>
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<ul>
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<li>:blue_book: See the documentation at the <a href="https://zcash.readthedocs.io">ReadTheDocs</a>
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for help and more information.</li>
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<li>:incoming_envelope: Ask for help on the <a href="https://forum.zcashcommunity.com/">Zcash forum</a>.</li>
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<li>:speech_balloon: Join our community on the <a href="https://discord.com/invite/zcash">Zcash Global Discord</a>.</li>
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<li>🧑🎓: Learn at <a href="https://zechub.wiki/">ZecHub</a></li>
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</ul>
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<p>Participation in the Zcash project is subject to a
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<a href="code_of_conduct.html">Code of Conduct</a>.</p>
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<h3 id="building"><a class="header" href="#building">Building</a></h3>
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<p>Build Zcash along with most dependencies from source by running the following command:</p>
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<pre><code>./zcutil/build.sh -j$(nproc)
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</code></pre>
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<p>Currently, Zcash is only officially supported on Debian and Ubuntu. See the
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<a href="https://zcash.readthedocs.io/en/latest/rtd_pages/Debian-Ubuntu-build.html">Debian / Ubuntu build page</a>
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for detailed instructions.</p>
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<h2 id="license"><a class="header" href="#license">License</a></h2>
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<p>For license information see the file <a href="COPYING">COPYING</a>.</p>
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