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Merge branch 'moneromooo-monero-how-do-i'
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@ -21,6 +21,10 @@ attribution: "<!-- Icon is based on work by Freepik (http://www.freepik.com) and
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<div class="text-center" style="padding-bottom: 15px;"><a style="color: #505050;" href="/getting-started/contribute"><img src="//static.getmonero.org/images/icon_people.svg" class="title-icon"><h2 class="inline">Contributing to <span class="yellow-kicks">Monero</span></h2></a></div>
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<div class="text-center" style="padding-bottom: 15px;"><a style="color: #505050;" href="/getting-started/contribute"><img src="//static.getmonero.org/images/icon_people.svg" class="title-icon"><h2 class="inline">Contributing to <span class="yellow-kicks">Monero</span></h2></a></div>
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---
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<div class="text-center" style="padding-bottom: 15px;"><a style="color: #505050;" href="/knowledge-base/user-guides"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline">How do I...</h2></a></div>
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<div class="text-center" style="padding-bottom: 15px;"><a style="color: #505050;" href="/getting-started/donate"><img src="//static.getmonero.org/images/icon_donations.svg" class="title-icon"><h2 class="inline">Donating and <span class="kicks">Sponsorships</span></h2></a></div>
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<div class="text-center" style="padding-bottom: 15px;"><a style="color: #505050;" href="/getting-started/donate"><img src="//static.getmonero.org/images/icon_donations.svg" class="title-icon"><h2 class="inline">Donating and <span class="kicks">Sponsorships</span></h2></a></div>
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@ -18,3 +18,4 @@ attribution: "<!-- Icon is based on work by Freepik (http://www.freepik.com) and
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="vps_run_node"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">How to run a node on VPS</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="vps_run_node"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">How to run a node on VPS</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="monero_tools"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">Monero tools</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="monero_tools"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">Monero tools</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="monero-wallet-cli"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">Getting started with monero-wallet-cli</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="monero-wallet-cli"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">Getting started with monero-wallet-cli</span></h2></a></div>
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<div class="text-left" style="padding-bottom: 15px;"><a style="color: #505050;" href="prove-payment"><img src="//static.getmonero.org/images/icon_client.svg" class="title-icon"><h2 class="inline"><span class="green-kicks">How to prove payment</span></h2></a></div>
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knowledge-base/user-guides/prove-payment.md
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knowledge-base/user-guides/prove-payment.md
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---
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layout: static_page
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title: "How to prove payment"
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title-pre-kick: "Prove "
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title-kick: "payment"
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title-post-kick: ""
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kick-class: "kicks"
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icon: "icon_about"
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attribution: "<!-- Icon is based on work by Freepik (http://www.freepik.com) and is licensed under Creative Commons BY 3.0 -->"
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---
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When you send money to a party who then disputes the payment was made, you need to be able to prove the payment was made.
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With Bitcoin, this is typically done by looking up the transaction ID, where the origin and destination addresses are
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shown, along with the amount transacted.
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Monero, however, is private: that information is not available publicly on the blockchain. The steps are therefore a bit
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more involved.
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To prove to Charlie that she made a payment to Bob, Alice must supply Charlie three pieces of information:
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- the transaction ID, as is done in Bitcoin
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- Bob's address, as is done with Bitcoin
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- the transaction's key, which is new with Monero and other Cryptonote currencies
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When Alice made the transaction, a one time key was automatically generated just for this transaction. Alice can
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query it thus in monero-wallet-cli (new name for the old simplewallet):
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> get_tx_key TXID
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Alice would plug in her actual transaction ID instead of this TXID placeholder. All being well, the one time transaction key
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will be displayed.
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Note that this will only work if monero-wallet-cli is set to save transaction keys. To double check:
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> set
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If it's set to 0, set it to 1:
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> set store-tx-info 1
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Alice can now send Charlie the transaction key along with transaction ID and Bob's address.
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Note: if several transactions were made, this needs repeating for each such transaction.
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---
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Charlie now received those three pieces of information, and wants to check Alice is telling the truth: on an up to date
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blockchain, Charlie types in monero-wallet-cli:
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> check_tx_key TXID TXKEY ADDRESS
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The information supplied by Alice plugs neatly instead of the placeholders. monero-wallet-cli will use the transaction
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key to decode the transaction, and display how much this particular transaction sent to this address. Obviously,
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Charlie will want to double check with Bob the address is really his - same as with Bitcoin.
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Note: if several transactions were made, this needs repeating for each such transaction.
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