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<!DOCTYPE HTML>
<html lang="en-US">
<head>
<title>木币。 Woodcoin: Sustainable. Digital. Cash.</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes" />
<meta name="description" content="Woodcoin is a minable proof-of-work cryptocurrency"/>
<meta name="keywords" content="woodcoin, crypto currency, cryptocurrency, logarithmic, skein, secp256r1, X9_62_prime256v1"/>
<meta name="robots" content="index,follow" />
<noscript><link rel="stylesheet" href="https://woodcoin.org/css/noscript.css" /></noscript>
<link href="https://woodcoin.org/css/main.css" rel="stylesheet" />
</head>
<body>
<div id="wrapper">
<header id="header">
<div class="logo">
<span class="icon fa-tree"></span>
</div>
<div class="content">
<div class="inner">
<p> The Logarithmic Bitcoin </p>
<p> 对数的比特币 </p>
<h1>Woodcoin [LOG] </h1>
<p></p>
Euler Wrote "log". Boltzmann Wrote "log".
</div>
</div>
<nav>
<ul>
<li><a href="#whatwhy">About</a></li>
<li><a href="#trade">Trade</a></li>
<li><a href="#techs">Technicals</a></li>
<li><a href="#code">Download</a></li>
<li><a href="#contact">Media</a></li>
</ul>
</nav>
</header>
<div id="main">
<article id="whatwhy">
<h2 class="major">Woodcoin: What/Why</h2>
<span class="image main"><img data-src="https://woodcoin.org/img/woodcoins-guardian.jpg" class="lazyload" alt="Age of Chains Woodcoin Guardian" /></span>
<p>Image from <a href="https://www.ageofchains.com/portfolio/guardiancard/"> Age of Chains</a>
<h3 class="major">What</h3>
<p>Woodcoin is a cryptocurrency, a logarithmically growing money supply, a decentralized, minable, proof-of-work, public ledger. The unit of exchange is LOG, and the genesis block was mined in October 2014.<br/><p>WHITEPAPER: <a href="/files/woodcoin-en.pdf">English</a>, <a href="/files/woodcoin_cn.pdf">中文</a> , <a href="/files/woodcoin-es.pdf"> Español </a> , <a href="/files/woodcoin_fr.pdf"> Français </a> , <a href="/files/woodcoin-de.pdf"> Deutsch</a></p>
<h3 class="major">Why</h3>
<p>Woodcoin (LOG) was created to address a problem which exists with the mining reward schedule of other public coins. For a decentralized coin, mining must take place with a predetermined reward schedule / public monetary policy. If the reward schedule drops too quickly, the founders or early adopters hold all the existing coin and there is little incentive for new miners to secure the network - stagnation. Transaction fees do provide incentive for miners but high fees can also drag down the value of the coin. On the other hand, if a reward schedule drops too slowly, the supply increases without bound and inflation is the result.</p>
<p>Woodcoin’s coinbase reward finds the middle ground between stagnation and inflation by growing logarithmically. This means that the mining reward is always bigger today than it will be tomorrow, and that there will aways be a significant reward incentive for miners to secure the network.</p>
<p>The logarithmic money supply policy is designed for stability and longevity. Half the LOGs will be released in the first 200 years, instead of the first 4 years (as BTC or LTC). However, every block is worth less than the preceding one - so earlier adopters are always rewarded and the supply will never rise above 28.5 million LOG.</p>
<p>This site is maintained by Vermont Secure Computing consultancy in an effort to benefit the public coin economy, including Woodcoin users and other Bitcoin users who might be interested to learn of the monetary policy of Woodcoin. Woodcoin is a decentralized system, there are no alerts or checkpoints, trademarks, patents, no ICO (no premine), and no corporation or company controlling the protocol. The protocol has remained simple and robust without mandatory forks or updates since its inception in October of 2014, where it was created near the Royal Oak Tavern in Oxford England.</p>
</article>
<article id="trade">
<h2 class="major">Explorers/Trading</h2>
<span class="image main"><img data-src="https://woodcoin.org/img/pic04.jpg" class="lazyload" alt="Graph simulating rises and falls" /></span>
<h3 class="major">Exchanges</h3>
<a href="https://crex24.com/"> Crex24 </a>
<br/>
<a href="https://fubt.co/"> FUBT </a>
<br/>
<a href="http://acx.io"> ACX </a>
<br/>
<br/>
<h3 class="major">Explorers</h3>
<a href="https://explorer.woodcoin.org/">Explorer.Woodcoin.org</a>
<br/>
<a href="https://logexplorer.net/">LogExplorer.net</a>
<br/>
<br/>
<h3 class="major">Pools</h3>
<a href="https://miner-control.de/">Miner-control.de</a>
<br/>
<a href="https://zpool.ca/">Zpool</a>
<br/>
</article>
<article id="techs">
<h2 class="major">The Technicals</h2>
<span class="image main"><img data-src="https://woodcoin.org/img/pic01.jpg" class="lazyload" alt="Digital lock in front of a circuit board" /></span>
<p>Woodcoin, the original logarithmic Bitcoin, is a publicly issued minable cryptocurrency.
There are three major innovations in the design:</p>
<li>Proof of Work algorithm: Double Skein</li>
<ul>This is the first consensus network built solely with the skein hash function. You can read more about Skein <a href="http://skein-hash.info/about">at the skein-hash.info site</a>. Use of algorithms already in use by high work networks present an attack vulnerability. Woodcoin is secured with Skein2 or pure skein as the proof-of-work hash function. While many coins include the skein function to some extent (X11 coins such as Dash, Skeincoin, Quark, and others) Woodcoin uses only Skein512 for proof-of-work, computed twice. This is indifferent to Satoshi's choice to use a double sha256 hash to secure the first public coin. Skein is a fast and robust hash function.</ul>
<li>Elliptic Curve for Digital Signatures: X9_62_prime256v1.</li>
<ul>To sign transactions and create public and private addresses we use the elliptic curve digital signature algorithm ECDSA just like most all currently available public coins. However Woodcoin uses a different curve also known as secp256r1 as a basis to do so. This curve was perhaps the most used in the financial industry before Bitcoin. Some people claim it is more secure as it takes greater advantage of the parameter space than the Koblitz curve.</ul>
<li>Logarithmic Coin Release</li>
<ul>Woodcoin is the first coin to use a logarithmic coin release. The reward is continually decremented in an harmonic series. The algorithm that controls the creation of units of currency over time should be the first thing every educational site about a coin should present. In that spirit here is the monetary policy of Woodcoin:
From /src/main.cpp:
<pre><code>int64 static GetBlockValue(int nHeight, int64 nFees) {
int64 nSubsidy = 1000000 * COIN;
if (nHeight<100) return 1*COIN;
else return nSubsidy/nHeight + nFees;
}</code></pre>
This leads to a total money supply S which increases logarithmically in block height n:
<pre><code>log = natural logarithm
gamma = euler-mascheroni constant
forest = 5187377.51763962 (value of LOG reward suppressed during the first 100 blocks)
S = 1000000* ( log n + gamma ) – forest
</code></pre>
Unlike many other cryptocurrencies, the reward isn't scheduled to drop quickly until far in the future. The coinbase will continue to subsidize miners and keep the coin alive - both in allowing for low-fee transactions and in improving network security. Here is a plot of the woodcutting reward per day, compared to Bitcoin, for the next 50 years: <span class="image main"><img data-src="https://woodcoin.org/img/woodcoin-v-bitcoin-distribution.png" class="lazyload" alt="Chart Comparing Bitcoin/Woodcoin" /></span></ul>
<br/>
</article>
<article id="code">
<h2 class="major">Downloads / Code</h2>
<span class="image main"><img data-src="https://woodcoin.org/img/polygon.png" class="lazyload" alt="Diamond-like polygon" /></span>
<h3 class="major">Basic Android SPV Wallet </h3>
<b>Source: </b><a href="https://github.com/funkshelper/woodcoinj-dev">wooodcoinj (full implementation in java) </a>
<br/>
<b>Source: </b><a href="https://github.com/funkshelper/woodcoin-wallet-dev">wooodcoin-wallet for android </a>
<br/>
<b>APK: </b><a href="https://woodcoin.org/files/woodcoin-wallet.apk">Android App </a>
<br/>
<br/>
<h3 class="major">Woodcoin-Core Full Node </h3>
<b>Source: </b><a href="https://github.com/funkshelper/woodcore">Woodcoin-Core 0.13.2 </a>
<br/>
<b>Windows Executable: </b><a href="https://github.com/woodcoin-core/woodcoin-windows/raw/master/woodcore-qt.exe">Woodcoin-Core 0.13.2</a>
<br/>
<br/>
<h3 class="major">Woodcoin Full Node (Stable, w/ miner) </h3>
<b>Linux: </b><a href="https://github.com/woodcoin-core/woodcoin-linux/">Download (1.2.0.10)</a>
<br/>
<b>Mac: </b><a href="https://github.com/woodcoin-core/woodcoin-mac/raw/master/woodcoin-qt.dmg">Woodcoin-qt.dmg (1.2.0.10)</a>
<br/>
<b>Windows: </b><a href="https://github.com/woodcoin-core/woodcoin-windows/raw/master/woodcoin-qt.exe">Woodcoin-qt.exe (1.2.0.10)</a>
<br/>
<br/>
<h3 class="major">Other Woodcoin Node Implementations</h3>
<a href="https://github.com/funkshelper/fo-realz-woodcoin">The-Real-Woodcoin (Satoshi 0.5.3 Based)</a>
<br/>
<a href="https://github.com/funkshelper/woodcoin-minimal/">Woodcoin-minimal (Satoshi 0.8 woodcoind only)</a><br/>
<a href="https://github.com/funkshelper/woodcoinj-dev/">Full Java Implementation</a>
<a href="https://github.com/funkshelper/woodcoin-openssl-1.0/">Wooodcoin wallet w/ miner for systems running the older OpenSSL 1.0</a>
<a href="https://github.com/funkshelper/woodcore-openssl-1.0/">Wooodcore wallet for systems running the older OpenSSL 1.0</a>
<br/>
<br/>
<h3 class="major">Miner</h3>
<b>GPU </b><a href="https://github.com/tpruvot/ccminer/">CCMiner (Nvidia)</a>
<br/>
<br/>
<h3 class="major">Miscellaneous</h3>
<b>Linux/Mac/Windows: </b><a href="https://github.com/woodcoin-core/vanitygen/">VanityGen</a>
<br/>
<b>Linux/Mac/Windows: </b><a href="https://github.com/funkshelper/woodcoin/">Original git repo</a>
</article>
<article id="contact">
<h2 class="major">Media</h2>
<span class="image main"><img data-src="https://woodcoin.org/img/unspecified3.jpeg" class="lazyload" alt="Woodcoin logo" /></span>
<h2 class="major">Discussion</h2>
<a href="https://www.youtube.com/watch?v=cWnQ54l-gBE">Youtube - Woodcoin Intro (EN)</a>
<br/>
<a href="https://www.youtube.com/watch?v=N2rCmZOMhtw">Youtube - Woodcoin Intro (JP)</a>
<br/>
<a href="https://bitcointalk.org/index.php?topic=831003">Bitcointalk Announcement Thread</a>
<br/>
<br/>
<h2 class="major">Contact</h2>
<a href="https://webchat.freenode.net/?channels=#woodcoin">Woodcoin IRC</a>
<br/>
<a href="https://discord.gg/CZ2Fhux4bT">Discord Server</a>
<br/>
<a href="https://github.com/woodcoin-core">Woodcoin Core Team Github</a>
<br/>
<a href="http://vtscc.org">Vermont Secure Computing Consultancy</a>
<br/>
<a href="https://www.facebook.com/vtscc/">Facebook</a>
<br/>
<br/>
<h2 class="major">External</h2>
<a href="https://www.ageofchains.com/portfolio/guardiancard/">Woodcoin's Guardian (Age of Chains) </a>
<br/>
<a href="http://coinmarketcap.com/currencies/woodcoin/">Coinmarketcap </a>
<br/>
<a href="http://woodcoin.info">Woodcoin.info Blog</a>
<br/>
<br/>
<h2 class="major">Woodcoin Pages</h2>
<a href="https://www.cryptocompare.com/coins/log/analysis/BTC">Crypto Compare</a>
<br/>
<a href="https://www.worldcoinindex.com/coin/Woodcoin">Worldcoin Index</a>
<br/>
<a href="https://www.coingecko.com/en/coins/woodcoin">Coingecko</a>
<br/>
<a href="https://www.coinhills.com/market/log/">Coinhills</a>
<br/>
<a href="https://walletinvestor.com/currency/woodcoin">Wallet Investor</a>
<br/>
<a href="http://ftreporter.com/woodcoin-the-next-generation-long-lasting-cryptocurrency/">FT Reporter</a>
<br/>
<a href="https://www.apogeecrypto.com/coins/woodcoin">Apogee Crypto</a>
</article>
</div>
<footer id="footer">
<p> </p>
<p> Quick Download Links: </p>
<p> <a href="https://play.google.com/store/apps/details?id=de.woodcoin.wallet" target="_blank" rel="noopener">
<img data-src="https://woodcoin.org/img/download-apk.png" class="lazyload" style="border:none;max-width:100%;" alt="Download Android App">
</a> </p>
<p> <a href="https://github.com/woodcoin-core/woodcoin-windows/raw/master/woodcore-qt.exe" target="_blank" rel="noopener"> <img data-src="https://woodcoin.org/img/download-win.png" class="lazyload" style="border:none;max-width:100%;" alt="Download Woodcoin-core for Windows">
</a> </p>
<p> <a href="https://github.com/woodcoin-core/woodcoin-mac/raw/master/woodcoin-qt.dmg" target="_blank" rel="noopener"> <img data-src="https://woodcoin.org/img/download-mac.png" class="lazyload" style="border:none;max-width:100%;" alt="Download Woodcoin for Mac">
</a> </p>
<p>Check out our <a href="https://explorer.woodcoin.org">Explorer</a>!</p>
<p>WHITEPAPER: <a href="/files/woodcoin-en.pdf">English</a>, <a href="/files/woodcoin_cn.pdf">中文</a> , <a href="/files/woodcoin-es.pdf"> Español </a> , <a href="/files/woodcoin_fr.pdf"> Français </a> , <a href="/files/woodcoin-de.pdf"> Deutsch</a></p>
</footer>
</div>
<div id="bg"></div>
<script src="https://woodcoin.org/js/lazysizes.js"></script>
<script src="https://woodcoin.org/js/jquery.min.js"></script>
<script src="https://woodcoin.org/js/skel.min.js"></script>
<script src="https://woodcoin.org/js/util.js"></script>
<script src="https://woodcoin.org/js/main.js"></script>
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