index.html (78373B)
1 <!DOCTYPE html> 2 <html class="sl-root decks export offline loaded"> 3 <head> 4 <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui"> 5 <meta charset="utf-8"> 6 <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> 7 <title>Building an Open Source payment system</title> 8 9 <meta name="description" content="Building an Open Source payment system with GNU Taler. Faster than credit card transactions, more efficient than Bitcoin, as private as email and free as GPL. GNU Taler is a payment system that you can install, modify and use for payments, withdrawals, tips and more."> 10 11 <link rel="stylesheet" type="text/css" href="lib/offline-v2.css"> 12 13 14 15 </head> 16 <body class="reveal-viewport theme-font-montserrat theme-color-white-blue"> 17 <div class="reveal"> 18 <div class="slides"> 19 <section data-id="ce8d6ca103e2abb17e9e349a68e6ad77"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="e1a75f604ac9b2b19e1e32137263418f"><div class="sl-block-content"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/2e9b1163c036ef53ceffb821b126f0a1.png"></div></div></section><section data-id="0c72ab5ce1671b78e82d77cd1c8da2b2"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="95ead529df7fe2bfb99b29f3bc2f2d50"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 20 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-block-id="4e73cf754aa7888e2eddd323cbf016b6" data-name="text-4864a8"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 21 <h2 style="text-align: left;">About this talk</h2> 22 </div></div> 23 <div class="sl-block" data-block-type="text" style="height: auto; width: 903px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="1853b4d863ab6683c3263fc97deecc46"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 24 <p style="color:rgb(255, 255, 255); text-align:left"><span style="color:#000000">Take away:</span></p> 25 26 <ul> 27 <li style="text-align:left"><span style="color:#000000">digital payment system</span></li> 28 <li style="text-align:left"><span style="color:#000000">token based, no ledger</span></li> 29 </ul> 30 31 <p style="text-align:left"> </p> 32 33 <p style="text-align:left">Agenda:</p> 34 35 <ul> 36 <li>use case & differences with cryptocurrencies</li> 37 <li>main components & how they interact</li> 38 <li>demo</li> 39 </ul> 40 </div></div> 41 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px;" data-name="image-0777f6" data-block-id="d51906bae8358e85ad270162206c715b"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="d39afa8e68650bcfc1f93bac0f2d3cb2"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="a2f5f20d4b46c772f2bf8a1b7d9cd0ab"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 42 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="47757d42b4ed0d947e87fdf814b5e2c9"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 43 <h2 style="text-align:left">About Alice</h2> 44 </div></div> 45 <div class="sl-block" data-block-type="text" style="height: auto; width: 903px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="fb2da7034c70b24e38427fa71ed1b361"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 46 <p style="text-align:left">Alice is a hacker</p> 47 48 <ul> 49 <li style="text-align:left"><span style="color:#000000">like videogames</span></li> 50 <li style="text-align:left"><span style="color:#000000">has a arcade room business</span></li> 51 <li style="text-align:left">friends build games with her</li> 52 <li style="text-align:left">new people all the time</li> 53 </ul> 54 55 <p style="text-align:left"> </p> 56 57 <p style="text-align:left"> </p> 58 </div></div> 59 <div class="sl-block" data-block-type="image" style="width: 252.449px; height: 263.6px; left: 640px; top: 179.2px; min-width: 1px; min-height: 1px;" data-name="image-cff032" data-block-id="0d983e36e1305b722d2c941e205ea5be"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="815" data-natural-height="851" data-lazy-loaded="" data-src="osff-london-taler/2ddc171af541310c53585a269d7646e8.png"></div></div> 60 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 449.5px;" data-name="text-f1efab" data-block-id="5750d13f7d2d0ac1cf925aa840574ac2"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 61 <p><span style="color:rgb(0, 0, 0); text-align:left">Business is working good but...</span></p> 62 </div></div> 63 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="48f13423f3f803fe8d715229168fe4fa"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="b966d7612cadbd62c40ea909869c41d5"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="19f610a32b02899137bb1e2879b093f8"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 64 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="14a1f47da90f9cda732a2b0b00cbac9e"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 65 <h2 style="text-align:left">Alice problem</h2> 66 </div></div> 67 <div class="sl-block" data-block-type="text" style="height: auto; width: 502px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="710b732779914c589c92743c321ee680"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 68 <p style="text-align:left">Alice lives in Argentina</p> 69 70 <ul> 71 <li style="text-align:left">inflation is bad</li> 72 <li style="text-align:left"><span style="color:#000000">currency has low value</span></li> 73 <li style="text-align:left">security is an issue</li> 74 </ul> 75 76 <p style="text-align:left"> </p> 77 78 <p style="text-align:left"> </p> 79 </div></div> 80 <div class="sl-block" data-block-type="image" style="width: 357.86px; height: 251.6px; left: 541.07px; top: 177.2px; min-width: 1px; min-height: 1px;" data-name="image-d1322e" data-block-id="6f27bb8c497e2d2c9f92d1d7a0a1acbf"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="815" data-natural-height="573" data-lazy-loaded="" data-src="osff-london-taler/7b793611c934da890f39822aa0751d5d.png"></div></div> 81 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 456.5px;" data-name="text-d0c1cd" data-block-id="a29b9de55ba2e5039ac0bf5ba1e3e3a2"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 82 <p><span style="color:rgb(0, 0, 0); text-align:left">She wants to go digital and stay legal</span></p> 83 </div></div> 84 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="1be260687622eea414d4bcd97aa1a41d"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="e7e1b698fb322d171579009acf5f2478"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="a8b7e0485352653997fd94c8ffc0f0b4"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 85 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="bbf010f94539d0dd00cbfee1566f96ba"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 86 <h2 style="text-align:left">Alternatives to cash</h2> 87 </div></div> 88 <div class="sl-block" data-block-type="text" style="height: auto; width: 903px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="63852b1149929c5faf8763205e7c0cde"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 89 <p style="text-align:left">Credit / Debit cards</p> 90 91 <ul> 92 <li style="text-align:left">kids can't use them</li> 93 <li style="text-align:left">high fees for small amounts</li> 94 </ul> 95 96 <p style="text-align:left">Fintech / Banks</p> 97 98 <ul> 99 <li style="text-align:left"><span style="color:#000000">needs account</span></li> 100 <li style="text-align:left">different proprietary APIs</li> 101 </ul> 102 </div></div> 103 <div class="sl-block" data-block-type="image" style="width: 396.244px; height: 249.6px; left: 521.878px; top: 174px; min-width: 1px; min-height: 1px;" data-name="image-62c438" data-block-id="3000251736f1289e23123fe385e067ec"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="1297" data-natural-height="817" data-lazy-loaded="" data-src="osff-london-taler/9a1ab6ced69b37dde89163f858a58fb2.png"></div></div> 104 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 456.5px;" data-name="text-d862ff" data-block-id="2517b2f1d0ed5f537b5f4b0e8507ca25"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 105 <p><strong>Bob</strong><span style="color:rgb(0, 0, 0); text-align:left"> suggested an idea!</span></p> 106 </div></div> 107 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="fcfe376691863c58f7bb60b3b8bb6432"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="783f50ffa9dbeb670263ee4a4f7386f2"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="02127ce290f03bb3f3694dd27c4c3ea4"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 108 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="d6a17d4f3f13e1f18d9ee7062663f4b6"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 109 <h2 style="text-align:left">Needs more blockchain!</h2> 110 </div></div> 111 <div class="sl-block" data-block-type="text" style="height: auto; width: 903px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="52c1e56010a7f8dbd81a7c5aee12ba31"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 112 <p style="text-align:left">Bitcoin/ETH/etc...</p> 113 114 <ul> 115 <li style="text-align:left">transaction cost</li> 116 <li style="text-align:left">transaction delay</li> 117 <li style="text-align:left">lightning network?</li> 118 </ul> 119 120 <p style="text-align:left">... build a new coin!</p> 121 122 <ul> 123 <li style="text-align:left"><span style="color:#000000">the problem is getting bigger</span></li> 124 <li style="text-align:left">not 100% private</li> 125 </ul> 126 </div></div> 127 <div class="sl-block" data-block-type="image" style="width: 396.244px; height: 249.6px; left: 521.878px; top: 174px; min-width: 1px; min-height: 1px;" data-name="image-62c438" data-block-id="eefb8206e7eb971199ded0f321c8437f"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="1297" data-natural-height="817" data-lazy-loaded="" data-src="osff-london-taler/9a1ab6ced69b37dde89163f858a58fb2.png"></div></div> 128 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 456.5px;" data-name="text-0f9eeb" data-block-id="658f61389fb244d1144f40c44e6f3129"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 129 <p><span style="color:rgb(0, 0, 0)">then she heard about this guy <strong>Richard...</strong></span></p> 130 </div></div> 131 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="64dc98fd3e37e5227ee8a92a19a75bff"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="baf7563ab7c2f657585648eafd9d6645"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="75fdc1e1f7f9a1237ba5867e232db322"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 132 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="7d92c765a5e46aa142758e5a225795e7"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 133 <h2 style="text-align:left">GNU Taler</h2> 134 </div></div> 135 <div class="sl-block" data-block-type="text" style="height: auto; width: 594px; left: 20px; top: 136px;" data-name="text-133880" data-block-id="7aecb475c0bf79ada22d590c37145807"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(0, 0, 0); text-align: left;"> 136 <blockquote> 137 <p><span style="font-size:0.7em">Now, with Taler. Only the payer is anonymous. The payee has to identify itself for each transaction. And so Taler can't be used to hide wealth. However, Taler is <strong>really anonymous for the payer</strong>. There is no way, the developers are quite confident, there's no way to figure out from Taler itself, who made the payment.</span></p> 138 </blockquote> 139 </div></div> 140 <div class="sl-block" data-block-type="text" style="height: auto; width: 767px; left: 20px; top: 370px;" data-name="text-9d84d6" data-block-id="2dc010c3219a3223d1ee1f25c28d34c9"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13;"> 141 <p style="text-align: left;"><a href="https://libreplanet.org/wiki/LibrePlanet:Conference/2022/Transcripts/RMS-state-of-free-software" target="_blank"><span style="font-size:11pt"><span><span style="color:#1155cc"><u>https://libreplanet.org/wiki/LibrePlanet:Conference/2022/Transcripts/RMS-state-of-free-software</u></span></span></span></a></p> 142 </div></div> 143 <div class="sl-block" data-block-type="image" style="width: 246.883px; height: 249.3px; left: 633.117px; top: 158.7px; min-width: 1px; min-height: 1px;" data-name="image-dffbba" data-block-id="60af4d3a580bfed12d2e50c7ddfb92c1"><div class="sl-block-content" style="z-index: 14;"><img style="" data-natural-width="817" data-natural-height="825" data-lazy-loaded="" data-src="osff-london-taler/cd724a4be9e7977ce00c41d949c535ff.png"></div></div> 144 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="23308412fdcccc09e813a6e984ca29f8"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="60d1b8a1ffdba8a41ce7f215d97047a6"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="b29560f69d493ea29b91e0cbd4a5a59b"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 145 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="eca9419de3e3eeccf64e44ce0105a238"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 146 <h2 style="text-align:left">Taler difference</h2> 147 </div></div> 148 <div class="sl-block" data-block-type="image" style="width: 246.883px; height: 249.3px; left: 633.117px; top: 158.7px; min-width: 1px; min-height: 1px;" data-name="image-dffbba" data-block-id="43140639084bf5e0b1d4551ed80ef4ff"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="817" data-natural-height="825" data-lazy-loaded="" data-src="osff-london-taler/cd724a4be9e7977ce00c41d949c535ff.png"></div></div> 149 <div class="sl-block" data-block-type="line" data-name="line-d32e2e" style="width: auto; height: auto; left: 245.255px; top: 171.7px;" data-block-id="7c4de2e8ca2c96bc9ddef0ca1c7d07f9"><div class="sl-block-content" data-line-x1="0" data-line-y1="142.3" data-line-x2="0" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="none" style="z-index: 13;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="1" height="142.3" viewbox="0 0 1 142.3"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="142.3" x2="0" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="142.3" x2="0" y2="0"></line></svg></div></div> 150 <div class="sl-block" data-block-type="line" data-name="line-55297c" style="width: auto; height: auto; left: 61.5575px; top: 241px;" data-block-id="edd118aeecd8f4b8cab4989689d4a44f"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="365.8558644917602" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="none" style="z-index: 14;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="365.8558644917602" height="1" viewbox="0 0 365.8558644917602 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="365.8558644917602" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="365.8558644917602" y2="0"></line></svg></div></div> 151 <div class="sl-block" data-block-type="text" data-name="text-3d469c" style="height: auto; width: 97.025px; left: 427.558px; top: 268.8px;" data-block-id="2495e1c5b17711212c737766c88ec317"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 15; text-align: center; font-size: 70%;"> 152 <p><strong>physical</strong></p> 153 </div></div> 154 <div class="sl-block" data-block-type="text" style="height: auto; width: 80.85px; left: 433.733px; top: 184px;" data-name="text-53a0f7" data-block-id="1e6e3df70471543e614b3fe77c2e4da9"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 16; text-align: center; font-size: 72%;"> 155 <p><strong>digital</strong></p> 156 </div></div> 157 <div class="sl-block" data-block-type="text" style="height: auto; width: 180.994px; left: 57.459px; top: 320.5px;" data-name="text-72d968" data-block-id="b594af98de7bda1372cd414eb331d127"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 17; text-align: center; font-size: 70%;"> 158 <p><strong>account</strong></p> 159 </div></div> 160 <div class="sl-block" data-block-type="text" data-name="text-d39275" style="height: auto; width: 179.447px; left: 248.111px; top: 320.5px;" data-block-id="75a7c6d6abbe7985482892667f7c4d4f"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 18; font-size: 70%;"> 161 <p><strong>token</strong></p> 162 </div></div> 163 <div class="sl-block" data-block-type="text" data-name="text-0663be" style="height: auto; width: 122.983px; left: 268.42px; top: 269.76px;" data-block-id="dacf57e1c4ac7e51d8be4de2d9a1cf56"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 19; font-size: 70%;"> 164 <p>cash</p> 165 </div></div> 166 <div class="sl-block" data-block-type="text" data-name="text-84f6f4" style="height: auto; width: 182.541px; left: 57.459px; top: 171.7px;" data-block-id="b5c3640406e7fc6380fb69de48ba8c63"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 20; font-size: 70%;"> 167 <p>wire transfer & cryptos</p> 168 </div></div> 169 <div class="sl-block" data-block-type="text" style="height: auto; width: 182.541px; left: 61.5575px; top: 270px;" data-name="text-97a7e1" data-block-id="351623a37fc6fad52d65c733db2e01cb"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 21; font-size: 70%;"> 170 <p>ledger book</p> 171 </div></div> 172 <div class="sl-block" data-block-type="text" data-name="text-b2118e" style="height: auto; width: 150.055px; left: 261.884px; top: 184px;" data-block-id="e18518f060caef20e7c6361ae595d7ad"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 22; font-size: 70%;"> 173 <p>GNU Taler</p> 174 </div></div> 175 <div class="sl-block" data-block-type="text" style="height: auto; width: 822.115px; left: 22.6755px; top: 448.5px;" data-name="text-0d8899" data-block-id="5a5a6d987a6b9b35fef5297014355035"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 23; font-size: 51%;"> 176 <pre><a href="https://www.suerf.org/policynotes/46097/who-comes-after-us-the-correct-mindset-for-designing-a-central-bank-digital-currency" target="_blank">A digital Euro based on accounts poses “democratic risks” and could allow “state surveillance of all transactions of every individual”</a> 177 (French National Council for Digitalization) 178 </pre> 179 </div></div> 180 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="1d954082da745bdaf324698b3dbede9e"><div class="sl-block-content" style="z-index: 24;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="9cbda302bb0cc56286dea24586e8a6f2"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="5596e83969921e455fc17b715c21da80"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 181 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="65ef68006e9a6b5210004d70434f1c82"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 182 <h2 style="text-align:left">Taler resources</h2> 183 </div></div> 184 <div class="sl-block" data-block-type="image" style="width: 224.06px; height: 322.599px; left: 655.94px; top: 136px; min-width: 1px; min-height: 1px;" data-name="image-482053" data-block-id="cc0f61febe327902b6f0151f85e3efeb"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="191" data-natural-height="275" data-lazy-loaded="" data-src="osff-london-taler/8250179553f606fd4e46b60697683cca.png"></div></div> 185 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 136px;" data-name="text-6ec8bf" data-block-id="35d41fb16c5cd2cd38e656b2760a4408"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13; text-align: left;"> 186 <p>Documentation: <a href="https://docs.taler.net" target="_blank">docs.taler.net</a><br> 187 FLOSS: <a href="https://git.taler.net" target="_blank">git.taler.net</a><br> 188 Community: <a href="mailto:taler@gnu.org" target="_blank">taler@gnu.org</a><br> 189 News: <a href="https://taler.net/en/news/" target="_blank">taler.net/en/news/</a></p> 190 191 <p>Twitter: <a href="https://twitter.com/taler" target="_blank">@taler</a></p> 192 </div></div> 193 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 437px;" data-name="text-0e433b" data-block-id="6ec3738183857ac8c2ff39d2ac8232e5"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 194 <p>Then she understood the key parts...</p> 195 </div></div> 196 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="415cb85cf9e2b0c2b25fc0f889d2c661"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="b8f86db7fb95d33743de17851e458e5f"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="f3538ce3c3c5f8a0040cbf4d3a258473"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 197 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="ab9efdd556a3d0c5b6333c4cd082baf0"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 198 <h2 style="text-align:left">Taler components</h2> 199 </div></div> 200 <div class="sl-block" data-block-type="image" style="width: 224.06px; height: 322.599px; left: 655.94px; top: 136px; min-width: 1px; min-height: 1px;" data-name="image-482053" data-block-id="bb576d4f8d6179ce4f1432d9f0361145"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="191" data-natural-height="275" data-lazy-loaded="" data-src="osff-london-taler/8250179553f606fd4e46b60697683cca.png"></div></div> 201 <div class="sl-block" data-block-type="text" style="height: auto; width: 417px; left: 20px; top: 456.5px;" data-name="text-6ec8bf" data-block-id="0df9993d2fd70c4112bc8017b909a0b9"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13; text-align: left;" dir="ui" data-fragment-index="0"> 202 <p>So she plays with the demo...</p> 203 </div></div> 204 <div class="sl-block sl-block-group" data-block-type="group" data-name="group-d882ae" data-block-id="07e337ae2328024346f14c38b35bac85" style="width: auto; height: auto;"><div class="sl-block-content sl-block-group-content" style="transform-origin: 292.688px 281.145px; z-index: 14;"> 205 <div class="sl-block" data-block-type="text" data-name="text-5918d4" style="height: auto; width: 247.625px; left: 150.687px; top: 136px;" data-block-id="8c0173ba40156d4f674adceca89a8cf3"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 15;"> 206 <h3>exchange</h3> 207 </div></div> 208 <div class="sl-block" data-block-type="text" data-name="text-738a02" style="height: auto; width: 221px; left: 0px; top: 348px;" data-block-id="d61c5747f9a34a68cad11a0581110834"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 16;"> 209 <h3>wallet</h3> 210 </div></div> 211 <div class="sl-block" data-block-type="text" style="height: auto; width: 271px; left: 314.376px; top: 348px;" data-name="text-691836" data-block-id="24134101d3a1a0f9cc2f4d4d8920e0a9"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 17;"> 212 <h3>merchant</h3> 213 </div></div> 214 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; left: 131.312px; top: 202px;" data-name="line-b44c95" data-block-id="f77ae87bb539636bdb5656056a12ead0"><div class="sl-block-content" data-line-x1="63.31299999999999" data-line-y1="0" data-line-x2="0" data-line-y2="137" data-line-color="#000000" data-line-start-type="none" data-line-end-type="arrow" style="z-index: 18;" data-line-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63.31299999999999" height="137" viewbox="0 0 63.31299999999999 137"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="63.31299999999999" y1="0" x2="2.5170437962334233" y2="131.55348822384062"></line><line class="line-element" stroke="#000000" stroke-width="4" x1="63.31299999999999" y1="0" x2="2.5170437962334233" y2="131.55348822384062"></line><polygon fill="#000000" transform="translate(2.5170437962334233,131.55348822384062) rotate(204.803)" points="0,-6 6,6 -6,6"></polygon></svg></div></div> 215 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; left: 185.001px; top: 348px;" data-name="line-93c6bb" data-block-id="c12e6ccc4c7a3c6628af0aebb3e70b3b"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="143.67379999999997" data-line-y2="0" data-line-color="#000000" data-line-start-type="line-arrow" data-line-end-type="none" style="z-index: 19;" data-line-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="143.67379999999997" height="1" viewbox="0 0 143.67379999999997 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="3" y1="0" x2="143.67379999999997" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="4" x1="3" y1="0" x2="143.67379999999997" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="4" transform="translate(3,0) rotate(90)" d="M -9 -9 L 0 0 L 9 -9"></path></svg></div></div> 216 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; left: 354.5px; top: 202px;" data-name="line-3dd52e" data-block-id="c9f7a618fa2395d56091a44c70403465"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="62.876000000000005" data-line-y2="146" data-line-color="#000000" data-line-start-type="line-arrow" data-line-end-type="none" style="z-index: 20;" data-line-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="62.876000000000005" height="146" viewbox="0 0 62.876000000000005 146"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="1.1866120904090214" y1="2.755349659643061" x2="62.876000000000005" y2="146"></line><line class="line-element" stroke="#000000" stroke-width="4" x1="1.1866120904090214" y1="2.755349659643061" x2="62.876000000000005" y2="146"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="4" transform="translate(1.1866120904090214,2.755349659643061) rotate(156.701)" d="M -9 -9 L 0 0 L 9 -9"></path></svg></div></div> 217 <div class="sl-block" data-block-type="text" data-name="text-65e231" style="height: auto; width: 172.082px; left: 46.4044px; top: 237.173px;" data-block-id="e59e3cc858ae6d22478798c498eeb27f"><div class="sl-block-style" style="z-index: 21; transform: rotate(-65deg);"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 21;"> 218 <p><span style="font-size:0.7em">1.withdraw coins</span></p> 219 </div></div></div> 220 <div class="sl-block" data-block-type="text" style="height: auto; width: 273.727px; left: 112.211px; top: 301.921px;" data-name="text-83aaa2" data-block-id="77755e41bf6447ba45c570bd2f97aac8"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 22;"> 221 <p><span style="font-size:0.7em">2. send ticket</span></p> 222 </div></div> 223 <div class="sl-block" data-block-type="text" style="height: auto; width: 116.203px; left: 359.274px; top: 237.173px;" data-name="text-8b825b" data-block-id="87d97b51aa8421d3221ac7dd21f5adee"><div class="sl-block-style" style="z-index: 23; transform: rotate(64deg);"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 23;"> 224 <p><span style="font-size:0.7em">4. deposit</span></p> 225 </div></div></div> 226 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; left: 185.675px; top: 373.5px;" data-name="line-c2b5cb" data-block-id="b7c95c37ece2f7ffb6c6e769eb598bdd"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="143.67379999999997" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="arrow" style="z-index: 24;" data-line-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="143.67379999999997" height="1" viewbox="0 0 143.67379999999997 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="137.67379999999997" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="4" x1="0" y1="0" x2="137.67379999999997" y2="0"></line><polygon fill="#000000" transform="translate(137.67379999999997,0) rotate(90)" points="0,-6 6,6 -6,6"></polygon></svg></div></div> 227 <div class="sl-block" data-block-type="text" style="height: auto; width: 273.727px; left: 110.5px; top: 387.29px;" data-name="text-d58d73" data-block-id="92d96d81d021acb582eb0af1ac89e201"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 25;"> 228 <p><span style="font-size:0.7em">3. pay / sign</span></p> 229 </div></div> 230 </div></div> 231 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="68568a5ad075faf8174a5f985d2b3a36"><div class="sl-block-content" style="z-index: 26;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section class="stack" data-id="1cf0b9d9f843442774f27227f95dc231"><section data-id="b5192d5c83ed9b454a40cb1f16d98554"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="e4cb6d266fadd92ef3d28088e83ac18c"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 232 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="e0d16d012cd1c54fa9cde968e45ecaad"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 233 <h2 style="text-align:left">Taler demo</h2> 234 </div></div> 235 <div class="sl-block" data-block-type="image" style="width: 224.06px; height: 322.599px; left: 655.94px; top: 136px; min-width: 1px; min-height: 1px;" data-name="image-482053" data-block-id="c599e9bfe8f3c522f41ca7309b987e94"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="191" data-natural-height="275" data-lazy-loaded="" data-src="osff-london-taler/8250179553f606fd4e46b60697683cca.png"></div></div> 236 <div class="sl-block" data-block-type="text" style="height: auto; width: 572px; left: 20px; top: 146.5px;" data-name="text-6ec8bf" data-block-id="092376dfc76f3e22ffc38acb4317d827"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13; text-align: left;" dir="ui"> 237 <ol> 238 <li>she installs the wallet web-extension</li> 239 <li>then fills the wallet with KUDOS</li> 240 <li>goes to the essay shop</li> 241 <li>buys an article</li> 242 <li>receives a tip for participating in a survey</li> 243 </ol> 244 </div></div> 245 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 26px; top: 439.099px;" data-block-id="002f7cb122f87c637235aafbc3950af7" data-name="text-d62c1e"><div class="sl-block-content fragment" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; text-align: left;" data-fragment-index="0"> 246 <p>also doable with the Android app </p> 247 </div></div> 248 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="51436f082cf0658238eab9261955afa3"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="b9c0eb56e8afbf10e6d4f55f3ea9c614"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="40f96b8d7bfa24ab3d9be16ae3da0326"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 249 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="8822c21d26fee88a4a183471b5e68418"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 250 <h2 style="text-align:left">Taler demo</h2> 251 </div></div> 252 253 254 <div class="sl-block" data-block-type="image" style="width: 464.5px; height: 335.885px; left: 247.75px; top: 136px; min-width: 1px; min-height: 1px;" data-name="image-a29083" data-block-id="fd803a5c9f891cbdea5da1d81ef9f60d"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="1376" data-natural-height="995" data-lazy-loaded="" data-src="osff-london-taler/ea6b5581f700d53409347f06ffb73986.png"></div></div> 255 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="c6977085e98b5c04dd68b4aef559e89d"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section></section><section class="stack" data-id="835a6aaa1a3a9e3993dbb938848b3446"><section data-id="4b29125aaf49c2ce9b75422f338dbc46"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="0b35fe53e628d292356b9eb9a33b2631"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 256 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="6c0b25ec1b3c55e1f3a637e467253e42"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 257 <h2 style="text-align:left">Taler Arcade</h2> 258 </div></div> 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 180px; top: 262px;" data-name="text-87191a" data-block-id="252d0b07e752e7f9bc0d974be1d7de43"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; text-align: left;"> 279 <p>but Alice still needs to integrate Taler with her arcades...</p> 280 </div></div> 281 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="53a5df768e385777fc599d76a81d5953"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="b70edb1bc28d253a61b19ef7fa4cad95"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="24b4cb361d2c07a91193438c5c0ffb38"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 282 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="165d1e7ded2032078409bc6f6ce11a4e"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 283 <h2 style="text-align:left">Taler Arcade</h2> 284 </div></div> 285 <div class="sl-block" data-block-type="image" style="width: 154.668px; height: 149.6px; left: 763.31px; top: 313.5px; min-width: 1px; min-height: 1px;" data-name="image-4f742d" data-block-id="d0b1f746d622481b90a32cddf5a6832c"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="824" data-natural-height="797" data-lazy-loaded="" data-src="osff-london-taler/ca64c81ca751777c30b5540440730d09.png"></div></div> 286 <div class="sl-block" data-block-type="shape" style="width: 178px; height: 75px; left: 283.5px; top: 157.8px;" data-name="shape-c1ed89" data-block-id="092b949d53b7e5c7a3515f4d818dcfca"><div class="sl-block-content" data-shape-type="rect" data-shape-fill-color="rgba(0, 0, 0, 0)" data-shape-stretch="true" style="z-index: 13;" data-shape-stroke-color="#000000" data-shape-stroke-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" preserveaspectratio="none" viewbox="0 0 178 75"><defs><clippath id="shape-mask-1-1657059271818"><rect width="178" height="75" rx="0" ry="0" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8"></rect></clippath></defs><rect width="178" height="75" rx="0" ry="0" class="shape-element" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8" clip-path="url(#shape-mask-1-1657059271818)"></rect></svg></div></div> 287 <div class="sl-block" data-block-type="shape" style="width: 178px; height: 75px; left: 542px; top: 159.5px;" data-block-id="e5a08c0e7c2833bbe6cce81b978321a8" data-name="shape-956563"><div class="sl-block-content" data-shape-type="rect" data-shape-fill-color="rgba(0, 0, 0, 0)" data-shape-stretch="true" style="z-index: 14;" data-shape-stroke-color="#000000" data-shape-stroke-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" preserveaspectratio="none" viewbox="0 0 178 75"><defs><clippath id="shape-mask-2-1657059292740"><rect width="178" height="75" rx="0" ry="0" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8"></rect></clippath></defs><rect width="178" height="75" rx="0" ry="0" class="shape-element" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8" clip-path="url(#shape-mask-2-1657059292740)"></rect></svg></div></div> 288 <div class="sl-block" data-block-type="shape" style="width: 178px; height: 75px; left: 499px; top: 358.3px;" data-block-id="80f58e1b5cbaea3f0f197a9c463fc5f9" data-name="shape-9c04ca"><div class="sl-block-content" data-shape-type="rect" data-shape-fill-color="rgba(0, 0, 0, 0)" data-shape-stretch="true" style="z-index: 15;" data-shape-stroke-color="#000000" data-shape-stroke-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" preserveaspectratio="none" viewbox="0 0 178 75"><defs><clippath id="shape-mask-3-1657059299525"><rect width="178" height="75" rx="0" ry="0" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8"></rect></clippath></defs><rect width="178" height="75" rx="0" ry="0" class="shape-element" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8" clip-path="url(#shape-mask-3-1657059299525)"></rect></svg></div></div> 289 <div class="sl-block" data-block-type="shape" style="width: 178px; height: 75px; left: 222px; top: 358.3px;" data-block-id="c465601a6aee2073ad1de820ff0cf178" data-name="shape-adac13"><div class="sl-block-content" data-shape-type="rect" data-shape-fill-color="rgba(0, 0, 0, 0)" data-shape-stretch="true" style="z-index: 16;" data-shape-stroke-color="#000000" data-shape-stroke-width="4px"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" preserveaspectratio="none" viewbox="0 0 178 75"><defs><clippath id="shape-mask-4-1657059304980"><rect width="178" height="75" rx="0" ry="0" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8"></rect></clippath></defs><rect width="178" height="75" rx="0" ry="0" class="shape-element" fill="rgba(0, 0, 0, 0)" stroke="#000000" stroke-width="8" clip-path="url(#shape-mask-4-1657059304980)"></rect></svg></div></div> 290 <div class="sl-block" data-block-type="text" style="height: auto; width: 178px; left: 283.5px; top: 171.3px;" data-name="text-e0fc73" data-block-id="eefc61890df193206184068dc5544e56"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 17; line-height: 0.715; font-size: 97%;" data-has-line-height=""> 291 <p><span style="font-size:0.7em">cash validator</span></p> 292 293 <p><span style="font-size:0.7em">listener</span></p> 294 </div></div> 295 <div class="sl-block" data-block-type="text" style="height: auto; width: 178px; left: 542px; top: 176.5px;" data-block-id="2731e5284aa32a8d0fd0aecfcd60e9ed" data-name="text-cb6aa3"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 18; line-height: 0.715; font-size: 97%;" data-has-line-height=""> 296 <p><span style="font-size:20.37px">arcade pickup tipping</span></p> 297 </div></div> 298 <div class="sl-block" data-block-type="text" style="height: auto; width: 178px; left: 499px; top: 369.3px;" data-block-id="0a5714e7ff548c46fb02d51f4ea32883" data-name="text-6cb2e7"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 19; font-size: 97%; letter-spacing: -0.01em; line-height: 0.715;" data-has-letter-spacing="" data-has-line-height=""> 299 <p><span style="font-size:20.37px">arcade insert</span></p> 300 301 <p><span style="font-size:20.37px">coin watcher</span></p> 302 </div></div> 303 <div class="sl-block" data-block-type="text" style="height: auto; width: 178px; left: 222px; top: 369.3px;" data-block-id="0c61be3ca9732bc02ef525871e25e797" data-name="text-ce98d1"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 20; line-height: 0.858; font-size: 97%;" data-has-line-height=""> 304 <p><span style="font-size:20.37px">arcade payment listener</span></p> 305 </div></div> 306 <div class="sl-block" data-block-type="image" style="width: 119.038px; height: 118.6px; left: 53.499px; top: 136px; min-width: 1px; min-height: 1px;" data-name="image-fb20a4" data-block-id="d9060a8aaaab124f957d8db2cce2b303"><div class="sl-block-style" style="z-index: 21; transform: rotate(0deg);"><div class="sl-block-content" style="z-index: 21;"><img style="" data-natural-width="544" data-natural-height="542" data-lazy-loaded="" data-src="osff-london-taler/ec9e2e40717e54233e2ed3752d9ba790.png"></div></div></div> 307 <div class="sl-block" data-block-type="image" style="width: 81.5px; height: 81.5px; left: 806.3px; top: 154.55px; min-width: 1px; min-height: 1px;" data-name="image-193fd4" data-block-id="5bff9febf88d1779cbd4875550f11a97"><div class="sl-block-content" style="z-index: 22;"><img style="" data-natural-width="150" data-natural-height="150" data-lazy-loaded="" data-src="osff-london-taler/1e166270ee9577736d1296229df9a908.png"></div></div> 308 <div class="sl-block" data-block-type="image" style="width: 81.5px; height: 81.5px; left: 53.499px; top: 355.05px; min-width: 1px; min-height: 1px;" data-block-id="bd62edf3a6ca35b885d958e235c1cb2b" data-name="image-a7b140"><div class="sl-block-content" style="z-index: 23;"><img style="" data-natural-width="150" data-natural-height="150" data-lazy-loaded="" data-src="osff-london-taler/1e166270ee9577736d1296229df9a908.png"></div></div> 309 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 144px; top: 395.8px;" data-name="line-be12b3" data-block-id="ba7e948c302711f8e07c0bcbeae69e30"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 24;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 310 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 417px; top: 394.8px;" data-block-id="6d97aa47032928971624c48c505af294" data-name="line-bd6dcd"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 25;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 311 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 688.5px; top: 393.8px;" data-block-id="2c477b214909940f0afd56ef054ef61d" data-name="line-19dc9c"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 26;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 312 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 190.5px; top: 197px;" data-block-id="848a95dec675873c7a67d38ce09542e9" data-name="line-e2e5ea"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 27;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 313 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 467.5px; top: 197px;" data-block-id="4526fc428e258f14abbdb72f682e3d8b" data-name="line-3b87b8"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 28;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 314 <div class="sl-block" data-block-type="line" style="width: auto; height: auto; min-width: 0px; min-height: 0px; left: 731.81px; top: 197px;" data-block-id="9796d08a1cd818a6d1252c5cec741049" data-name="line-a87486"><div class="sl-block-content" data-line-x1="0" data-line-y1="0" data-line-x2="63" data-line-y2="0" data-line-color="#000000" data-line-start-type="none" data-line-end-type="line-arrow" style="z-index: 29;"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" preserveaspectratio="xMidYMid" width="63" height="1" viewbox="0 0 63 1"><line stroke="rgba(0,0,0,0)" stroke-width="15" x1="0" y1="0" x2="61" y2="0"></line><line class="line-element" stroke="#000000" stroke-width="2" x1="0" y1="0" x2="61" y2="0"></line><path style="fill: rgba(0,0,0,0);" stroke="#000000" stroke-width="2" transform="translate(61,0) rotate(90)" d="M 6 6 L 0 0 L -6 6"></path></svg></div></div> 315 <div class="sl-block" data-block-type="text" style="height: auto; width: 103px; left: 794.81px; top: 115.55px;" data-name="text-feb358" data-block-id="3cd486ef9bddc09f18b29a6d17cd2da3"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 30;"> 316 <p>pickup</p> 317 </div></div> 318 <div class="sl-block" data-block-type="text" style="height: auto; width: 103px; left: 41px; top: 313.5px;" data-block-id="a8234874ca09acace90d395da8d57a4e" data-name="text-bc8e67"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 31;"> 319 <p>pay</p> 320 </div></div> 321 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="c8d028af21aaffab447fa39a4ef015dd"><div class="sl-block-content" style="z-index: 32;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="aad2709cfda5874049bf6dfba2667fa0"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="3177bb59642d2a892ea6ef5414c751a7"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 322 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="2067f33829e3d3fb73b4b684f0a90252"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 323 <h2 style="text-align:left">Taler Arcade</h2> 324 </div></div> 325 <div class="sl-block" data-block-type="text" style="height: auto; width: 437px; left: 80px; top: 276.9px;" data-name="text-4242b9" data-block-id="7cba1a923f6cb298fe1bf2ba35faaa1d"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; text-align: left;"> 326 <p><a href="https://arcade.taler.ar/pickup" target="_blank">https://arcade.taler.ar/pickup</a></p> 327 </div></div> 328 <div class="sl-block" data-block-type="image" style="width: 272.8px; height: 272.8px; left: 560px; top: 160px; min-width: 1px; min-height: 1px;" data-name="image-7fe35e" data-block-id="31bc0c9de2d7689669262592131d3f4b"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="150" data-natural-height="150" data-lazy-loaded="" data-src="osff-london-taler/2ef14826a2bb70f99baa34c612cc7dca.png"></div></div> 329 <div class="sl-block" data-block-type="image" style="width: 41.0693px; height: 36.461px; left: 32px; top: 465.539px; min-width: 1px; min-height: 1px;" data-name="image-07fc5b" data-block-id="4b3f5bd45c4fe8ab3572bf3a3751d905"><div class="sl-block-content" style="z-index: 14;"><img style="" data-natural-width="811" data-natural-height="720" data-lazy-loaded="" data-src="osff-london-taler/24e99a2aadda4f8a9cee352274f37320.png"></div></div> 330 <div class="sl-block" data-block-type="text" style="height: auto; width: 290px; left: 80px; top: 465.539px;" data-name="text-c24fb7" data-block-id="cd872948611f804dc12e450ded294caf"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 15; line-height: 0.858;" data-has-line-height=""> 331 <p><span style="font-size:0.5em">this service has some security issues</span></p> 332 </div></div> 333 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="017fa8e2da7f02c349d92038213d3ed4"><div class="sl-block-content" style="z-index: 16;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="7e7a27e7fce7bc4a8cfd144690d6caed"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="afb38048d5fbf40d5496d5fe3c5d24ca"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 334 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="36c841a1062d8e7ae7d8c6cbb9a752a8"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 335 <h2 style="text-align:left">Taler Arcade</h2> 336 </div></div> 337 <div class="sl-block" data-block-type="image" style="width: 272.8px; height: 272.8px; left: 560px; top: 160px; min-width: 1px; min-height: 1px;" data-name="image-9ce838" data-block-id="e17cfda521a1626e06f7fefcc30af73d"><div class="sl-block-content" style="z-index: 12;"><img style="" data-natural-width="150" data-natural-height="150" data-lazy-loaded="" data-src="osff-london-taler/1e166270ee9577736d1296229df9a908.png"></div></div> 338 <div class="sl-block" data-block-type="text" style="height: auto; width: 437px; left: 80px; top: 276.9px;" data-name="text-4242b9" data-block-id="0719ebca7bbc9e6224c183e689b5a40c"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13; text-align: left;"> 339 <p><a href="https://arcade.taler.ar/pay" target="_blank">https://arcade.taler.ar/pay</a></p> 340 </div></div> 341 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="ae0bd95bd127a9702ce0f00236a1775b"><div class="sl-block-content" style="z-index: 14;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section></section><section data-id="b1fc95cba1c8a8fcf004ba16f5e6c0e6"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="1e434bb5de88c750e4aad0b97405caba"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 342 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="e2e1ec31c0cbb6897737e301caa1c953"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 343 <h2 style="text-align:left">Final comments</h2> 344 </div></div> 345 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 20px; top: 147px;" data-name="text-59d999" data-block-id="3462cd2c8da0b31d79dad1d2d053489d"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; text-align: left;"> 346 <p>Missing topics in this presentation:</p> 347 348 <ul> 349 <li>auditors & back-office</li> 350 <li>regulations: KYC, AML, CFT</li> 351 <li>age restricted coins</li> 352 <li>operation fees</li> 353 <li>p2p payments</li> 354 <li>wallet backups</li> 355 </ul> 356 </div></div> 357 <div class="sl-block" data-block-type="image" style="width: 291.016px; height: 225.6px; left: 606.718px; top: 182.4px; min-width: 1px; min-height: 1px;" data-name="image-f3b480" data-block-id="2d9a68c9da0351e2c30fcf079aac15bb"><div class="sl-block-content" style="z-index: 13;"><img style="" data-natural-width="347" data-natural-height="269" data-lazy-loaded="" data-src="osff-london-taler/6e70b19975c24863250bbabe86242662.png"></div></div> 358 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="834e97a3699093a8e8d20c16c6738207"><div class="sl-block-content" style="z-index: 14;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="ec22b24391198ec0cf5742f663f8896f"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="c3da2ec93524dfc0a447b7ba2b02f1a1"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/3d28e7d49590bb3ce18faf79648865b0.png"></div></div> 359 <div class="sl-block" data-block-type="text" style="width: 721px; left: 20px; top: 15px; height: auto;" data-name="text-4864a8" data-block-id="e7e74577eea7524bfdadf78dea4db793"><div class="sl-block-content" data-placeholder-tag="h1" data-placeholder-text="Title Text" style="z-index: 11; color: rgb(255, 255, 255);"> 360 <h2 style="text-align:left">If you want more....</h2> 361 </div></div> 362 <div class="sl-block" data-block-type="text" style="height: auto; width: 925px; left: 13px; top: 119px;" data-name="text-59d999" data-block-id="c128b19388fec10844d780bceadb2d10"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; text-align: left; font-size: 93%; line-height: 1.339;" data-has-line-height=""> 363 <p>Connect with us <a href="https://www.taler.net" target="_blank">taler.net</a>, at <a href="https://cbdc-forum.tech/en/" target="_blank">The Libre rCBDC Technology Forum</a> or write to <a href="mailto:taler@gnu.org" target="_blank">taler@gnu.org</a></p> 364 </div></div> 365 366 <div class="sl-block" data-block-type="text" style="height: auto; width: 932px; left: 13px; top: 204px;" data-block-id="e177ec05ad9a50a6341ef624bea98098" data-name="text-66b7bc"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 13; text-align: left; line-height: 1.027; font-size: 76%;" data-has-line-height=""> 367 <p>Read more:</p> 368 369 <ol> 370 <li> 371 <a href="https://taler.net/en/news/2022-07.html" target="_blank"><span style="font-size:0.7em">A digital euro and the future of cash</span></a> <span style="font-size:0.7em">by the <strong>Central Bank of Austria</strong></span> </li> 372 <li> 373 <a href="https://taler.net/en/news/2021-06.html" target="_blank"><span style="font-size:0.7em">How to issue a privacy-preserving central bank digital currency</span></a> <span style="font-size:0.7em">by <strong>The European Money and Finance Forum</strong>.</span> 374 </li> 375 <li><span style="font-size:0.7em"><a href="https://taler.net/en/news/2022-05.html" target="_blank">Who comes after us? The correct mindset for designing a Central Bank Digital Currency</a> <span style="color:rgb(0, 0, 0)">by </span><strong>The European Money and Finance Forum</strong></span></li> 376 </ol> 377 </div></div> 378 <div class="sl-block" data-block-type="text" style="height: auto; width: 930px; left: 13px; top: 340px;" data-name="text-e63ed9" data-block-id="ab2b51a57a206c8b2d331d8fbc8d32c9"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 14; font-size: 75%; line-height: 1.066;" data-has-line-height=""> 379 <p style="text-align:justify">from [1] </p> 380 381 <blockquote> 382 <p style="text-align:justify"><span style="color:rgb(0, 0, 0); font-size:22.5px; text-align:justify">Implemented as a CBDC, GNU Taler would be issued by the <strong>central bank</strong> and distributed to commercial banks, just like banknotes. Issuance is central and no distributed ledger is involved in issuing, distributing and paying. The central bank does not directly interact with customers in this model, and <strong>the only information that remains with the central bank is a list of spent coins</strong>.</span></p> 383 </blockquote> 384 </div></div> 385 <div class="sl-block" data-block-type="image" style="width: 92.8px; height: 92.8px; left: 848px; top: 5.6px; min-width: 1px; min-height: 1px;" data-name="image-0777f6" data-block-id="e5875ad11ac7a20b7406d238a0659909"><div class="sl-block-content" style="z-index: 15;"><img style="" data-natural-width="512" data-natural-height="512" data-src="osff-london-taler/69ee5e9ebdcfc613ba383d0caa4c094b.png"></div></div></section><section data-id="fbd6c5911193838efd5bacd33d32feff"><div class="sl-block" data-block-type="image" style="width: 960px; height: 539.52px; left: 0px; top: 0px; min-width: 1px; min-height: 1px;" data-locked="true" data-block-id="6981eb740b2b9bf9aa3d28b30f8c2f7f"><div class="sl-block-content" style="z-index: 10;"><img style="" data-natural-width="1500" data-natural-height="843" data-lazy-loaded="" data-src="osff-london-taler/779be47661e8af186c69e55593e87168.png"></div></div> 386 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 180px; top: 276px;" data-name="text-9e410b" data-block-id="240ba6f64a0f1442999d7bbcf0761f41"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 11; color: rgb(255, 255, 255);"> 387 <p>Thanks!</p> 388 389 <p>Sebastian Javier Marchano</p> 390 391 <p>https://taler.net</p> 392 </div></div> 393 <div class="sl-block" data-block-type="text" style="height: auto; width: 600px; left: 188px; top: 476px;" data-name="text-e8c73e" data-block-id="43dbbcfd78f091175f6642549e89d1ff"><div class="sl-block-content" data-placeholder-tag="p" data-placeholder-text="Text" style="z-index: 12; color: rgb(255, 255, 255);"> 394 <p>@sebasjm</p> 395 </div></div></section> 396 </div> 397 </div> 398 399 <script> 400 var SLConfig = {"deck": {"id":2425936,"slug":"osff-london-taler","title":"Building an Open Source payment system","description":"Building an Open Source payment system with GNU Taler. Faster than credit card transactions, more efficient than Bitcoin, as private as email and free as GPL. GNU Taler is a payment system that you can install, modify and use for payments, withdrawals, tips and more.","width":960,"height":540,"margin":0.0,"visibility":"all","published_at":"2022-07-05T17:20:43.024Z","sanitize_messages":null,"thumbnail_url":"https://s3.amazonaws.com/media-p.slid.es/thumbnails/8bde2163040e60810e3ca7068ca39d12/thumb.jpg?1657047230","view_count":2,"user":{"id":233396,"username":"sebasjm","name":"Sebastian Marchano","description":"","thumbnail_url":"https://lh3.googleusercontent.com/-K0BTr9B1jmo/AAAAAAAAAAI/AAAAAAAAD7k/xf6W0oNxnxw/photo.jpg","account_type":"lite","team_id":null,"settings":{"id":39747,"present_controls":true,"present_upsizing":true,"present_pointer":false,"present_notes":true,"default_deck_tag_id":null}},"background_transition":"slide","transition":"none","theme_id":null,"theme_font":"montserrat","theme_color":"white-blue","auto_slide_interval":0,"comments_enabled":false,"forking_enabled":true,"rolling_links":false,"center":false,"shuffle":false,"should_loop":false,"share_notes":false,"slide_number":true,"slide_count":21,"rtl":false,"version":2,"collaborative":null,"deck_user_editor_limit":1,"data_updated_at":1657566408302,"font_typekit":null,"font_google":null,"time_limit":25,"navigation_mode":"default","upsizing_enabled":true,"notes":{"b937ab8aa37bb616f254edd6c1b04709":"","38875701dfdca8f096ff7a4f1df34335":"","78eef9f7c491694a6fd8d7f34ba4d4bb":"","dc6a5c4293f6b80ba1a0146fc6af8bfc":"","19e8a432590b98dff1370e862b7b9c0b":"","2a573501752d971fa8b646c30bfde645":"","ce8d6ca103e2abb17e9e349a68e6ad77":"hi\nmi nombre es\nsoy dev de taler hace casi 2 años\ntrabajando en ui \n","0c72ab5ce1671b78e82d77cd1c8da2b2":"lo que me gustaría que se lleven de esta charla es que es un sitema de pagos\ncon monedas con valor nominal\nestas monedas son tokes que reciden en la billetera del usuario, a diferencia de otras soluciones donde lo que tenemos en la billetera es una referencia a una cuenta\n\nlo que me gustaría que se lleven de esta charla es \n porque y para que caso de usos es interesante esta perspectiva.... de esto se va a desprender la diferencia con las cryptos\n tendremos tiempo para una muy breve descripción de los componentes principales \n y vamos a hacer una, dos o tres demostraciones del software funcionando","fbd6c5911193838efd5bacd33d32feff":"","d39afa8e68650bcfc1f93bac0f2d3cb2":"les quiero contar la historia de alice\nes una hacker, desde chica, le gustaba los video-juegos y tiene amigos igualmente hackers\nrecibe muchos visitantes de diferentes paises\n\ny comenzó un negocio de arcades el negocio va muy bien pero tiene un problema","b966d7612cadbd62c40ea909869c41d5":"\ncomo ejemplo 1000 pesos is less that 4 dolars 3.48 eur 6.64 uk pound\nphysical security is an issue","e8464da9d65acd3a218734f6c219aff8":"","e7e1b698fb322d171579009acf5f2478":"el principal problema que tiene con las tarjeta de crédito es que los chicos no las pueden usar\nviajeros tuvieron inconvenientes con false positivos\n\ncon las fintech no tuvo estos problemas pero los usuarios no se quieren crear una cuenta mas\ny si tiene que hacer una integración seguramente se estaría lockeando","783f50ffa9dbeb670263ee4a4f7386f2":"dinero digital = blockchain\n\nen argentina muchos tienen crypto wallets \npero si va por monedas populares tiene problemas de tiempos y costos de transacción\nsi usa una nueva moneda.... es posible pero complicado\n\nparece factible pero no se llega a convencer","baf7563ab7c2f657585648eafd9d6645":"no tiene una blockchain ni cuentas, utiliza tokens\nentre sus comentarios destaca que para el comparador es completamente anonimo y privado\nel parte vendedora en cambio tiene que anunciar sus ingresos\n\nbuen escenario porque tener un monitoreo de uso de las máquinas pero al mismo tiempo proveer privacidad a los clientes es algo que le sirve","60d1b8a1ffdba8a41ce7f215d97047a6":"cash fisico = token digital\ntoken = par de clave privada / pública\nanónima porque no hay identidad relacionada\nprivada porque no se puede relacionar la extracción con el depósito\n\nel proyecto apunta a ser una solución para bancos centrales","99bd8e0cd9fe65412d0d7b6038524eab":"","9cbda302bb0cc56286dea24586e8a6f2":"parece interesante\necuentra documentación\necuentra código fuente donde puede entender como está hecho incluso matar algunos bugs\nuna comunidad activa donde se discuten varios temas\n\nasí que depsués de leer entiende que","b8f86db7fb95d33743de17851e458e5f":"el exchange tiene la habilidad de generar (firmando ciego a un par RSA) y también verificar la validez \nes la terminal perfecta para un banco existente\n\nla wallet es el software cliente que sigue los pasos del protocolo para generar un par RSA y pedir la firma ciega al exchange\neste proceso le garantiza al usuario de la billeta que el exchange no va a poder relacionar la extracción con el depósito\n\nsabe que es valida pero no sabe quien ni cuando\n\ncon este par de RSA la wallet puede firmar contratos de un comerciante y el comerciante con el contrato firmado puede pedir un deposit en su cuenta bancaria\n\n","b70edb1bc28d253a61b19ef7fa4cad95":"encuentra una validador de billetes\nse crea una adaptador para que el validador de billetes notifique al merchant backoffice de que hay dinero en la caja\ny una persona con una wallet puede recibir ese dinero simplemente teniendo una billetera taler instalada\n\nademas, genera otro endpoint donde se puede efectuar el pago de una orden que luego un servicio de monitoreo habilita a la maquina de arcade\n\nsi fuera una moneda que tiene crédito de otro lugar a alice no le interesa, mientras comparta el mismo exchange","b5192d5c83ed9b454a40cb1f16d98554":"este ejemplo la convence\n\nse siente comoda levantando servicios como base de datos o email server, dns, esto no parece ser mas complicado que eso\nasí que va por ello\n\nle parece interesante el ejemplo de tipping donde efectivamente está haciendo una especie de compra inversa donde el comerciante provee tokens para usar en las máquinas de arcade","b1fc95cba1c8a8fcf004ba16f5e6c0e6":"know your customer, anti money laundry, Combating the Financing of Terrorism\nexchange has the posibility of using age restricted coins, so this coins can not be used to pay contract that provider product or servicios for people above certain age\nAUDITORS","ec22b24391198ec0cf5742f663f8896f":"a lot of resources to read\nthis payment system is intended to be used by central banks which are the one who issue money\nentonces los comerciantes simplemente tienen que configurar en los exchanges y usar el backoffice\nThe Central Bank of Austria discusses the future of cash, including account- and blockchain-based designs, as well as GNU Taler.\n\n","7e7a27e7fce7bc4a8cfd144690d6caed":"","aad2709cfda5874049bf6dfba2667fa0":"","b9c0eb56e8afbf10e6d4f55f3ea9c614":"como ven hay un banco detras con las cuentas, es necesario para que el exchange solo imprima lo que responsablemente luego puede devolver\n\nla ventaja de taler es como con una tarjeta de crédito, sirve como medio de pago para autorizar los movimientos","4b29125aaf49c2ce9b75422f338dbc46":""}}}; 401 402 403 // Use local fonts 404 SLConfig.fonts_url = 'lib/fonts/'; 405 </script> 406 407 <script src="lib/reveal.js"></script> 408 <script src="lib/reveal-plugins.js"></script> 409 <script src="lib/offline.js"></script> 410 411 <!-- Initialize the presentation --> 412 <script> 413 Reveal.initialize({ 414 width: 960, 415 height: 540, 416 margin: 0.0, 417 418 419 hash: true, 420 controls: true, 421 progress: true, 422 mouseWheel: false, 423 showNotes: false, 424 slideNumber: true, 425 fragmentInURL: true, 426 427 autoSlide: 0, 428 autoSlideStoppable: true, 429 430 autoAnimateMatcher: SL.deck.AutoAnimate.matcher, 431 432 center: false, 433 shuffle: false, 434 loop: false, 435 rtl: false, 436 navigationMode: "default", 437 438 transition: "none", 439 backgroundTransition: "slide", 440 441 highlight: { 442 escapeHTML: false 443 }, 444 445 plugins: [ RevealZoom, RevealNotes, RevealMarkdown, RevealHighlight ] 446 }); 447 </script> 448 449 450 451 </body> 452 </html>