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xrpl-dev-portal/content/_img-sources/paychan-flow.uxf
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<diagram program="umlet" version="14.2">
<zoom_level>11</zoom_level>
<element>
<id>Relation</id>
<coordinates>
<x>451</x>
<y>44</y>
<w>319</w>
<h>121</h>
</coordinates>
<panel_attributes>lt=&lt;-
1. Payer: create channel
(PaymentChannelCreate transaction)
fg=#27a2db</panel_attributes>
<additional_attributes>10.0;90.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>143</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Channel is created</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>UMLSpecialState</id>
<coordinates>
<x>451</x>
<y>33</y>
<w>22</w>
<h>22</h>
</coordinates>
<panel_attributes>type=initial</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>451</x>
<y>176</y>
<w>264</w>
<h>99</h>
</coordinates>
<panel_attributes>lt=&lt;-
2. Payee: check channel state
(account_channels command)</panel_attributes>
<additional_attributes>10.0;70.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>253</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Both parties are ready
to use the channel</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>484</x>
<y>286</y>
<w>242</w>
<h>99</h>
</coordinates>
<panel_attributes>lt=&lt;-
3. Payer: sign claim(s)
(channel_authorize method)
</panel_attributes>
<additional_attributes>10.0;70.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>363</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Payer is ready to pay</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>484</x>
<y>396</y>
<w>341</w>
<h>99</h>
</coordinates>
<panel_attributes>lt=&lt;-
4. Payer: transmit signed claim to payee
(using any communication method)
</panel_attributes>
<additional_attributes>10.0;70.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>473</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Payment initiated</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>484</x>
<y>506</y>
<w>242</w>
<h>121</h>
</coordinates>
<panel_attributes>lt=&lt;-
5. Payee: Verify claim's
signature and amount
(channel_verify and
account_channels method)
</panel_attributes>
<additional_attributes>10.0;90.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>605</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Payment confirmed</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>484</x>
<y>638</y>
<w>319</w>
<h>77</h>
</coordinates>
<panel_attributes>lt=&lt;-
6. Payee: Provide goods and services
</panel_attributes>
<additional_attributes>10.0;50.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>396</x>
<y>693</y>
<w>198</w>
<h>44</h>
</coordinates>
<panel_attributes>Business transaction
complete</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>297</x>
<y>715</y>
<w>220</w>
<h>154</h>
</coordinates>
<panel_attributes>lt=&lt;-
8. Payee: Redeem claim
(PaymentChannelClaim
transaction)
Payee receives XRP
if channel isn't expired.
fg=#27a2db</panel_attributes>
<additional_attributes>10.0;120.0;10.0;10.0;90.0;10.0</additional_attributes>
</element>
<element>
<id>UMLTimer</id>
<coordinates>
<x>1100</x>
<y>242</y>
<w>176</w>
<h>121</h>
</coordinates>
<panel_attributes>Immutable
Expiration
("CancelAfter" field)</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>583</x>
<y>154</y>
<w>803</w>
<h>121</h>
</coordinates>
<panel_attributes>lt=&lt;..
(Immutable expiration
is defined by
PaymentChannelCreate
transaction)
</panel_attributes>
<additional_attributes>550.0;80.0;550.0;10.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLTimer</id>
<coordinates>
<x>979</x>
<y>902</y>
<w>154</w>
<h>121</h>
</coordinates>
<panel_attributes>Mutable
Expiration
("Expiration" field)</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>UMLSpecialState</id>
<coordinates>
<x>286</x>
<y>847</y>
<w>44</w>
<h>44</h>
</coordinates>
<panel_attributes>type=decision</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>110</x>
<y>253</y>
<w>308</w>
<h>638</h>
</coordinates>
<panel_attributes>lt=&lt;..
Payee's
PaymentChannelClaim
transaction did not
use tfClose flag</panel_attributes>
<additional_attributes>260.0;10.0;10.0;10.0;10.0;560.0;160.0;560.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>484</x>
<y>1111</y>
<w>231</w>
<h>88</h>
</coordinates>
<panel_attributes>Channel is closed and
removed from ledger.
Unclaimed XRP is
returned to payer</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>583</x>
<y>715</y>
<w>429</w>
<h>209</h>
</coordinates>
<panel_attributes>lt=&lt;-
9a. Payer: request to
close channel
(PaymentChannelClaim
transaction with
tfClose flag)
fg=#27a2db</panel_attributes>
<additional_attributes>210.0;170.0;210.0;10.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>1133</x>
<y>341</y>
<w>77</w>
<h>825</h>
</coordinates>
<panel_attributes>lt=&lt;-
</panel_attributes>
<additional_attributes>10.0;720.0;50.0;720.0;50.0;10.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>1045</x>
<y>1012</y>
<w>33</w>
<h>121</h>
</coordinates>
<panel_attributes>lt=&lt;-</panel_attributes>
<additional_attributes>10.0;90.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLState</id>
<coordinates>
<x>957</x>
<y>1111</y>
<w>187</w>
<h>44</h>
</coordinates>
<panel_attributes>Channel is expired</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>550</x>
<y>726</y>
<w>209</w>
<h>407</h>
</coordinates>
<panel_attributes>lt=&lt;-
9b. Payee: request to
close channel
(PaymentChannelClaim
transaction with
tfClose flag)
fg=#27a2db</panel_attributes>
<additional_attributes>10.0;350.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>UMLSpecialState</id>
<coordinates>
<x>792</x>
<y>902</y>
<w>44</w>
<h>44</h>
</coordinates>
<panel_attributes>type=decision</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>825</x>
<y>902</y>
<w>231</w>
<h>66</h>
</coordinates>
<panel_attributes>lt=&lt;..
Channel has
XRP left;
sets Expiration</panel_attributes>
<additional_attributes>190.0;20.0;10.0;20.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>704</x>
<y>1111</y>
<w>275</w>
<h>88</h>
</coordinates>
<panel_attributes>lt=&lt;-
10. Anyone: close channel
(PaymentChannelClose or
PaymentChannelFund
transaction)
fg=#27a2db</panel_attributes>
<additional_attributes>10.0;20.0;230.0;20.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>671</x>
<y>935</y>
<w>165</w>
<h>198</h>
</coordinates>
<panel_attributes>lt=&lt;..
Channel is
out of XRP</panel_attributes>
<additional_attributes>10.0;160.0;10.0;90.0;130.0;90.0;130.0;10.0</additional_attributes>
</element>
<element>
<id>UMLSpecialState</id>
<coordinates>
<x>396</x>
<y>1144</y>
<w>22</w>
<h>22</h>
</coordinates>
<panel_attributes>type=final</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>407</x>
<y>1144</y>
<w>99</w>
<h>33</h>
</coordinates>
<panel_attributes>lt=&lt;-</panel_attributes>
<additional_attributes>10.0;10.0;70.0;10.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>297</x>
<y>880</y>
<w>242</w>
<h>253</h>
</coordinates>
<panel_attributes>lt=&lt;..
Payee's
PaymentChannelClaim
transaction
used tfClose flag</panel_attributes>
<additional_attributes>200.0;210.0;200.0;130.0;10.0;130.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>847</x>
<y>297</y>
<w>231</w>
<h>627</h>
</coordinates>
<panel_attributes>lt=&lt;..
(Mutable expiration
can be updated by
PaymentChannelFund
transaction)</panel_attributes>
<additional_attributes>190.0;550.0;190.0;320.0;10.0;320.0;10.0;10.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>297</x>
<y>275</y>
<w>187</w>
<h>451</h>
</coordinates>
<panel_attributes>lt=&lt;-
7. Repeat as desired</panel_attributes>
<additional_attributes>90.0;10.0;10.0;10.0;10.0;390.0;90.0;390.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>583</x>
<y>253</y>
<w>407</w>
<h>55</h>
</coordinates>
<panel_attributes>lt=&lt;-
Payer: Add more XRP to channel
(PaymentChannelFund transaction)
fg=#27a2db</panel_attributes>
<additional_attributes>10.0;10.0;110.0;10.0;110.0;30.0;10.0;30.0</additional_attributes>
</element>
<element>
<id>UMLClass</id>
<coordinates>
<x>121</x>
<y>22</y>
<w>231</w>
<h>231</h>
</coordinates>
<panel_attributes>Legend
--
group=2</panel_attributes>
<additional_attributes/>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>132</x>
<y>55</y>
<w>209</w>
<h>66</h>
</coordinates>
<panel_attributes>lt=&lt;-
Off-ledger step
(happens as fast as
can be calculated)
group=2</panel_attributes>
<additional_attributes>170.0;20.0;10.0;20.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>132</x>
<y>121</y>
<w>209</w>
<h>66</h>
</coordinates>
<panel_attributes>lt=&lt;-
XRP Ledger transaction
(needs 3-5 seconds
for consensus)
fg=#27a2db
group=2</panel_attributes>
<additional_attributes>170.0;20.0;10.0;20.0</additional_attributes>
</element>
<element>
<id>Relation</id>
<coordinates>
<x>132</x>
<y>187</y>
<w>209</w>
<h>66</h>
</coordinates>
<panel_attributes>lt=&lt;..
Transaction effect
(happens as part
of a previous step)
group=2</panel_attributes>
<additional_attributes>170.0;20.0;10.0;20.0</additional_attributes>
</element>
</diagram>
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