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beijing_july_2018.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>北京比特幣聚會 Beijing Meetup July 2018</title>
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/simple.css">
<!-- Theme used for syntax highlighting of code -->
<link rel="stylesheet" href="lib/css/xcode.css">
<!-- Theme override for teachbitcoin -->
<link rel="stylesheet" href="css/teachbitcoin.css">
<!-- Google Font Roboto -->
<link href="https://fonts.googleapis.com/css?family=Open+Sans:300,400,400i,600" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto+Mono" rel="stylesheet">
</head>
<body>
<div class="reveal">
<div class="slides">
<!-- *********** BEGIN: Title Slide *********** -->
<section class = "box">
<img src="images/beijing_meetup_july2018/libbitcoin_title_graphic.jpg" class = "image" style = "z-index: -3;">
<div class = "multi_text_box_container" style = "padding: 250px 0 0 0;">
<ul style = "margin: 0px; padding: 0px; list-style-type: none;">
<li style = "font-weight:600; font-size:60px">Libbitcoin 工具箱:<br>相當於比特幣的瑞士刀</li>
<hr style = "visibility:hidden;">
<li style = "font-weight:300; font-size:40px">利用 Libbitcoin<br>而開發出的兩個<br>比特幣應用理念</li>
<li style = "font-weight:300; font-size:40px">
<hr style = "visibility:hidden;">
<li style = "font-weight:300; font-size:33px">28/07/18 北京比特幣聚會</li>
</ul>
</div>
</section>
<!-- *********** END: Title Slide *********** -->
<!-- *********** BEGIN: Title Slide *********** -->
<section class = "box">
<img src="images/beijing_meetup_july2018/libbitcoin_title_graphic.jpg" class = "image" style = "z-index: -3;">
<div class = "multi_text_box_container" style = "padding: 300px 0 0 0;">
<ul style = "margin: 0px; padding: 0px; list-style-type: none;">
<li style = "font-weight:600; font-size:35px">姜欣宇</li>
<li style = "font-weight:600; font-size:35px">區塊鏈科技專家顧問</li>
<li style = "font-weight:300; font-size:35px">[email protected]</li>
</ul>
</div>
</section>
<!-- *********** END: Title Slide *********** -->
<!-- *********** BEGIN: Libbitcoin Overview *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight" >Libbitcoin</span> 介紹
</div>
<!-- Derivation Graphic -->
<!-- <img src="images/wallets/hd_child_private.svg" class = "image" style = "z-index: -2;"> -->
<!-- 2 column container -->
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 30px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/libbitcoin0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/libbitcoin1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/libbitcoin2.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/libbitcoin3.svg" class = "fragment image" style = "z-index: -3;">
<!-- <img src="images/wallets/hd_child_keys_step_1.svg" class = "fragment image" style = "z-index: -2;">
<img src="images/wallets/hd_child_keys_step_2.svg" class = "fragment image" style = "z-index: -1;"> -->
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">比特幣軟件庫（c++）</li>
<ul style = "list-style-type: circle;">
<li>主要維護者: Eric Voskuil</li>
<li>創始人: Amir Taaki</li>
<li>第一個satoshi模型替代軟件</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">模塊設計</li>
<ul style = "list-style-type: circle;">
<li>獨立軟件成分</li>
<li>可獨立compile</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">程式介面給軟件工程很好讀</li>
<ul style = "list-style-type: circle;">
<li>比特幣的協議</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">能延展的服務台</li>
<ul style = "list-style-type: circle;">
<li>高性能的服務台</li>
<li>可延展的server接口</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">比特幣的好用工具箱</li>
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Libbitcoin Overview *********** -->
<!-- *********** BEGIN: Contents, HD Wallets *********** -->
<section class ="box">
<div class = "title">
利用 <span class = "title weight">Libbitcoin </span>而開發出的用理念
</div>
<div class = "multi_text_box_container" style = "padding: 100px 0 0 0;">
<ul style = "margin: 0px; padding: 0px; list-style-type: none;">
<li style = "font-weight:600; font-size:40px">分岔幣的錢包</li>
<ul style = "list-style-type: circle; font-size:30px">
<li>階層確定衍生錢包 (Hierarchical Deterministic Wallets)</li>
<li>硬分岔和交易重廣播</li>
<li>設立分岔幣錢包應用</li>
</ul>
<hr style = "visibility:hidden;">
<div style="opacity:0.4">
<li style = "font-weight:600; font-size:40px">閃電網路監控燈塔</li>
<ul style = "list-style-type: circle; font-size:30px">
<li>簡單的閃電交通</li>
<li>外包閃電通道的狀態</li>
<li>設立閃電監控燈塔應用</li>
</ul>
</div>
</ul>
</div>
</section>
<!-- *********** END: Contents, HD Wallets *********** -->
<!-- *********** BEGIN: HD Wallets *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">階層確定衍生錢包</span>
</div>
<!-- Derivation Graphic -->
<!-- <img src="images/wallets/hd_child_private.svg" class = "image" style = "z-index: -2;"> -->
<!-- 2 column container -->
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/hd_introduction0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/hd_introduction1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/hd_introduction2.svg" class = "fragment image" style = "z-index: -3;">
<!-- <img src="images/wallets/hd_child_keys_step_1.svg" class = "fragment image" style = "z-index: -2;">
<img src="images/wallets/hd_child_keys_step_2.svg" class = "fragment image" style = "z-index: -1;"> -->
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">助記編碼的主要秘密</li>
<ul style = "list-style-type: circle;">
<li>新的鑰匙能無限制的衍生</li>
<li>(公開延長鑰匙/私人延長鑰匙)</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">libbitcoin 錢包程式介面</li>
<ul style = "list-style-type: circle;">
<li>BIP32/39 錢包特性都有</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">錢包用法會引響鑰匙衍生路結構</li>
<ul style = "list-style-type: circle;">
<li>收錢地址</li>
<li>零錢地址</li>
<li>衍生新鑰匙保護個人隱私</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: HD Wallets *********** -->
<!-- *********** BEGIN: Chain Forks *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">分岔幣合交易重播</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/chain_fork0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/chain_fork1.svg" class = "fragment image" style = "z-index: -3;">
<!-- <img src="images/beijing_meetup_july2018/hd_introduction1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/hd_introduction2.svg" class = "fragment image" style = "z-index: -3;"> -->
<!-- <img src="images/wallets/hd_child_keys_step_1.svg" class = "fragment image" style = "z-index: -2;">
<img src="images/wallets/hd_child_keys_step_2.svg" class = "fragment image" style = "z-index: -1;"> -->
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">分岔幣時:沒用的輸出索引表兩邊同樣的</li>
<ul style = "list-style-type: circle;">
<li>錢包的鑰匙兩邊都可以簽交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">簽名可以在另外的區塊鏈從用</li>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">硬分岔幣都有重播保護</li>
<ul style = "list-style-type: circle;">
<li>簽名的算法要改變</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">錢包應用需要能接受新的參數...</li>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Chain Forks *********** -->
<!-- *********** TODO: Fork vs. Signature Mod Matrix *********** -->
<!-- *********** Begin: Modified Sighash *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">重播保護 : 簽名哈希變化</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/alt_sighash0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/alt_sighash1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/alt_sighash2.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">用私人鑰匙簽簽名哈希</li>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">bcash 簽名哈希標誌的字節會改變</li>
<ul style = "list-style-type: circle;">
<li>簽名哈希的字節加分岔號</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">libbitcoin 的程式介面能改變簽名哈希的參數</li>
<ul style = "list-style-type: circle;">
<li>標誌字節</li>
<li>不同的系列化的算法能力(BIP143)</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Modified Sighash *********** -->
<!-- *********** BEGIN: Multifork Wallet *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">分岔幣的錢包</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/multi_fork_wallet0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/multi_fork_wallet1.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">錢包在分岔後會重複分岔前的hd鑰匙的結構</li>
<ul style = "list-style-type: circle;">
<li>錢包需詢問服務台,才能確定未用的輸出</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">加分岔參數的libbitcoin服務器</li>
<ul style = "list-style-type: circle;">
<li>每個分岔比需要獨立的服務台</li>
<li>錢包能在每個區塊鏈分開的廣播交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Multifork Wallet *********** -->
<!-- *********** BEGIN: Contents, Watchtower *********** -->
<section class ="box">
<div class = "title">
利用 <span class = "title weight">Libbitcoin </span>而開發出的用理念
</div>
<div class = "multi_text_box_container" style = "padding: 100px 0 0 0;">
<ul style = "margin: 0px; padding: 0px; list-style-type: none;">
<div style="opacity:0.4">
<li style = "font-weight:600; font-size:40px">分岔幣的錢包</li>
<ul style = "list-style-type: circle; font-size:30px">
<li>階層確定衍生錢包</li>
<li>硬分岔和交易重廣播</li>
<li>設立分岔幣錢包應用</li>
</ul>
<hr style = "visibility:hidden;">
</div>
<li style = "font-weight:600; font-size:40px">閃電網路監控燈塔</li>
<ul style = "list-style-type: circle; font-size:30px">
<li>簡單的閃電交通</li>
<li>外包閃電通道的狀態</li>
<li>設立閃電監控燈塔應用</li>
</ul>
</ul>
</div>
</section>
<!-- *********** END: Contents, Watchtower *********** -->
<!-- *********** BEGIN: Naive Channel *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">簡單的閃電通道</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/naive_channel0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel2.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel3.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel4.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel5.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/naive_channel6.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 45%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">資金的交易和第一承諾交易</li>
<ul style = "list-style-type: circle;">
<li>Alice 簽的資金交易</li>
<li>雙方簽署承諾交易合約</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">正確的通道結束</li>
<ul style = "list-style-type: circle;">
<li>任何節點能廣播最新的承諾交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">問題: 不正確的通道結束</li>
<ul style = "list-style-type: circle;">
<li>無法防止廣播舊的承諾交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Naive Channel *********** -->
<!-- *********** BEGIN: RSMC *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">可撤銷的輸出</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/RSMC_output0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_output1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_output2.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_output3.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 40%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">Revocable Sequence Maturity Contract</li>
<ul style = "list-style-type: circle;">
<li>RSMC 輸出有兩個辦法開鎖</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">RSMC A 超時後: Alice能使用</li>
<ul style = "list-style-type: circle;">
<li>Alice 過時後可以簽名 RSMC A</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">RMSC A 隨時能被 R 鑰匙開鎖</li>
<ul style = "list-style-type: circle;">
<li>私人鑰匙 R 有兩半， r1 合 r2</li>
<li>每個節點會造新密碼 </li>
<li>r1 發給 Bob 以後，Bob 就能把 R 算出來，rmsc A 就撤銷了</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: RSMC *********** -->
<!-- *********** BEGIN: RSMC Channel *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">可撤銷輸出的閃電通道</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/RSMC_channel0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_channel1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_channel2.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_channel3b.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/RSMC_channel4.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 40%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">撤銷的輸出可被對方使用</li>
<ul style = "list-style-type: circle;">
<li>懲罰交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">需要監控被取消的交易</li>
<ul style = "list-style-type: circle;">
<li>各方需要注意被撤銷的交易廣播</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">閃電通道監監控燈塔</li>
<ul style = "list-style-type: circle;">
<li>可以通過第三方外包的方式來實現<br>"監控被取消的交易"</li>
<li>監控燈塔看到取消的承諾，就馬上反應</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: RSMC Channel *********** -->
<!-- *********** BEGIN: Watchtower *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">閃電監控燈塔</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/watchtower0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/watchtower1.svg" class = "fragment image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/watchtower2.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 40%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">監控燈塔監控承諾交易號碼的廣播</li>
<ul style = "list-style-type: circle;">
<li>監控燈塔在數據庫查找交易號碼前半部分</li>
<li>簽署了懲罰交易用交易號碼後半部分加密</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">取消的交易廣播了</li>
<ul style = "list-style-type: circle;">
<li>監控燈塔查到交易號碼前半部分</li>
<li>用查到的交易證號後半部分解密懲罰交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Watchtower *********** -->
<!-- *********** BEGIN: Watchtower Implementation *********** -->
<section class = "box">
<div class = "title">
<span class = "title weight">設立閃電通道監控燈塔</span>
</div>
<!-- 45% div for formula and curve--><!-- 45% text & bulletpoint -->
<div class = "multi_text_box_container" style = "padding: 40px 0 0 0; width: 1270px;">
<!-- 60% div for formula and curve-->
<div class = "" style = "width: 58%; font-size: 22px;">
<img src="images/beijing_meetup_july2018/watchtower_build0.svg" class = "image" style = "z-index: -3;">
<img src="images/beijing_meetup_july2018/watchtower_build1.svg" class = "fragment image" style = "z-index: -3;">
</div>
<!-- 45% text & bulletpoint -->
<div class = "text_box"
style = "width: 40%; font-size: 24px; margin: 0px 0 0 0">
<ul style = "margin: 0; padding: 0px; list-style-type: none;">
<!-- <hr style = "height:5px; visibility:hidden;"> -->
<li style = "font-weight: bold;">監控燈塔存儲數據對(交易號碼,加密懲罰交易)</li>
<ul style = "list-style-type: circle;">
<li>各數據對可獨立的管理</li>
<li>各數據對可給不同的監控燈塔管理</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">監控燈塔掃描每個新區塊的數據</li>
<ul style = "list-style-type: circle;">
<li>通過監控燈塔的掃描，發現可以配對符合交易號碼，廣播懲罰交易</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
<li style = "font-weight: bold;">使用libbitcoin來擴展監控燈塔的功能</li>
<ul style = "list-style-type: circle;">
<li>高性能的服務器</li>
<li>zmq 接口適合延展服務</li>
</ul>
<hr style = "height:5px; visibility:hidden;">
</ul>
</div>
</div><!-- End of 2 column container -->
</section>
<!-- *********** END: Watchtower Implementation *********** -->
<!-- *********** BEGIN: Q&A *********** -->
<section class = "box">
<img src="images/beijing_meetup_july2018/libbitcoin_title_graphic.jpg" class = "image" style = "z-index: -3;">
<div class = "multi_text_box_container" style = "padding: 250px 0 0 0;">
<ul style = "margin: 0px; padding: 0px; list-style-type: none;">
<li style = "font-weight:400; font-size:60px">Q&A</li>
<hr style = "visibility:hidden;">
</ul>
</div>
</section>
<!-- *********** END: Q&A *********** -->
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