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Clarify fake rounded amount added by the receiver

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nicolas.dorier 2020-05-17 20:01:48 +09:00
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@ -292,7 +292,7 @@ See payment output substitution above.
If Alice pays Bob, she might be tempted to pay him a round amount, like <code>1.23000000 BTC</code>. When this happens, blockchain analysis often identifies the output without the round amount as the change of the transaction. If Alice pays Bob, she might be tempted to pay him a round amount, like <code>1.23000000 BTC</code>. When this happens, blockchain analysis often identifies the output without the round amount as the change of the transaction.
For this reason, during a [spare change](Payjoin-spec.md#spare-change-donation) situation, we randomly round the amount in the output added by the receiver to the payjoin transaction. For this reason, during a [spare change](Payjoin-spec.md#spare-change-donation) situation, the receiver may add an output with a rounded amount randomly.
==Attack vectors== ==Attack vectors==