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authorChristian Grothoff <christian@grothoff.org>2015-08-03 18:34:46 +0200
committerChristian Grothoff <christian@grothoff.org>2015-08-03 18:34:46 +0200
commit653daabfe99e360cc529f92bc76c4ba6baa7e22a (patch)
tree539e69cb83af5f4527d130c40f567cf1176b6a41 /index.html
parente4b5e1aab625e4f743eb9f04c13257f532769ee5 (diff)
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195 <p><a lang="it" class="btn btn-primary" href="/news" role="button" lang="it">Scopri di più &raquo;</a></p> 195 <p><a lang="it" class="btn btn-primary" href="/news" role="button" lang="it">Scopri di più &raquo;</a></p>
196 </div> 196 </div>
197 </div> 197 </div>
198 <div class="jumbotron"> 198 <div class="jumbotron" align="left">
199 <h2 lang="en">Taler system overview</h1> 199 <h2 lang="en">Taler system overview</h1>
200 <h2 lang="de">Das Taler-System im &Uuml;berblick</h1> 200 <h2 lang="de">Das Taler-System im &Uuml;berblick</h1>
201 <h2 lang="fr" note="outdated"></h2> 201 <h2 lang="fr" note="outdated"></h2>
202 <h2 lang="it" note="outdated"></h2> 202 <h2 lang="it" note="outdated"></h2>
203 <p lang="en" align="center">
204 <img src="images/system.svg" alt="system overview">
205 </p>
206 <p lang="en">The Taler system consists of protocols and free software 203 <p lang="en">The Taler system consists of protocols and free software
207 implementations between a number of actors as illustrated in the 204 implementations between a number of actors as illustrated in the
208 illustration above. Typical transactions involve the following steps: 205 illustration above. Typical transactions involve the following steps:
209 </p> 206 <img src="images/system.svg" alt="system overview" style="float: right; margin: 5px 5px 5px 5px;" width="50%">
210 <ul> 207 <ol>
211 <li lang="en">A customer instructs his <b>bank</b> to transfer funds 208 <li lang="en">A customer instructs his <b>bank</b> to transfer funds
212 from his account to the Taler mint (top left). In the subject of 209 from his account to the Taler mint (top left). In the subject of
213 the transaction, he includes an authentication token from his 210 the transaction, he includes an authentication token from his
214 electronic <b>wallet</b>. In Taler terminology, the customer 211 electronic <b>wallet</b>. In Taler terminology, the customer
215 creates a reserve at the mint.</li> 212 creates a reserve at the mint.</li>
216 <li lang="en">Once the mint has received the transfer, it allows the 213 <li lang="en">Once the mint has received the transfer, it allows the
217 customer's electronic wallet to <b>withdraw</b> electronic coins. 214 customer's electronic wallet to <b>withdraw</b> electronic coins.
218 The electronic coins are digital representations of the original 215 The electronic coins are digital representations of the original
219 transfer. It is important to note that the mint does not learn 216 transfer. It is important to note that the mint does not learn
@@ -222,7 +219,7 @@
222 The use of Taler does not change the currency or the 219 The use of Taler does not change the currency or the
223 total value of the funds (except for fees which the mint may 220 total value of the funds (except for fees which the mint may
224 charge for the service).</li> 221 charge for the service).</li>
225 <li lang="en">Once the customer has the digital coins in his wallet, 222 <li lang="en">Once the customer has the digital coins in his wallet,
226 the wallet can be used to <b>spend</b> the coins with merchant 223 the wallet can be used to <b>spend</b> the coins with merchant
227 portals that support the Taler 224 portals that support the Taler
228 payment system and accept the respective mint as a business 225 payment system and accept the respective mint as a business
@@ -236,7 +233,7 @@
236 customer. Naturally, the customer can spend any fraction of his 233 customer. Naturally, the customer can spend any fraction of his
237 digital coins (the system takes care of customers getting 234 digital coins (the system takes care of customers getting
238 change).</li> 235 change).</li>
239 <li lang="en">Merchants receiving digital coins <b>deposits</b> 236 <li lang="en">Merchants receiving digital coins <b>deposits</b>
240 the respective receipts that resulted from the contract signing 237 the respective receipts that resulted from the contract signing
241 with the customer at the mint to redeem the coins. 238 with the customer at the mint to redeem the coins.
242 The deposit step does not reveal the learn the details of the 239 The deposit step does not reveal the learn the details of the
@@ -249,27 +246,28 @@
249 customer. Thus, the mint's database allows the state to enforce 246 customer. Thus, the mint's database allows the state to enforce
250 that merchants pay applicable taxes (and do not engage in 247 that merchants pay applicable taxes (and do not engage in
251 illegal contracts).</li> 248 illegal contracts).</li>
252 <li lang="en">Finally, the mint transfers funds corresponding to 249 <li lang="en">Finally, the mint transfers funds corresponding to
253 the digital coins redeemed by the merchants to the merchant's 250 the digital coins redeemed by the merchants to the merchant's
254 <b>bank</b> account. The mint may combine multiple small 251 <b>bank</b> account. The mint may combine multiple small
255 transactions into one larger bank transfer. 252 transactions into one larger bank transfer.
256 The merchant can query the mint 253 The merchant can query the mint
257 about the relationship between the bank transfers and the 254 about the relationship between the bank transfers and the
258 individual claims that were deposited.</li> 255 individual claims that were deposited.</li>
259 <li lang="en">Most importantly, the mint keeps cryptographic 256 <li lang="en">Most importantly, the mint keeps cryptographic
260 proofs that allow it to demonstrate that it is operating 257 proofs that allow it to demonstrate that it is operating
261 correctly to third parties. The system requires an external 258 correctly to third parties. The system requires an external
262 <b>auditor</b>, such as a government-appointed financial regulatory 259 <b>auditor</b>, such as a government-appointed financial regulatory
263 body, to frequently verify the mint's databases and check that 260 body, to frequently verify the mint's databases and check that
264 its bank balance matches the total value of the remaining coins 261 its bank balance matches the total value of the remaining coins
265 in circulation.</li> 262 in circulation.</li>
266 <li lang="en">Without the auditor, the mint operators could 263 <li lang="en">Without the auditor, the mint operators could
267 steal funds they are holding in reserve. Customers and merchants 264 steal funds they are holding in reserve. Customers and merchants
268 cannot cheat each other or the mint. If any party's computers 265 cannot cheat each other or the mint. If any party's computers
269 are compromised, the financial damage is limited to the 266 are compromised, the financial damage is limited to the
270 respective party and proportional to the funds they 267 respective party and proportional to the funds they
271 have in circulation during the period of the compromise.</li> 268 have in circulation during the period of the compromise.</li>
272 </ul> 269 </ol>
270 </p>
273 </div> 271 </div>
274 <!--# include file="common/footer.inc" --> 272 <!--# include file="common/footer.inc" -->
275 </div> <!-- /container --> 273 </div> <!-- /container -->