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Edited ch09_fees.adoc with Atlas code editor

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claylock 2023-10-26 14:43:40 +00:00
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[[tx_fees]]
== Transaction Fees
The digital signature we saw Alice create in <<c_signatures>> only
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<p class="fix_tracking">
The digital signature we saw Alice create in <a data-type="xref" href="#c_signatures">#c_signatures</a> only
proves that she knows her private key and that she committed to a
transaction that pays Bob. She can create another signature that
instead commits to a transaction paying Carol--a transaction that spends
the same output (bitcoins) that she used to pay Bob. Those two
transactions((("conflicting transactions")))((("transactions", "conflicts in"))) are now _conflicting transactions_ because only one
transactions are now <em>conflicting transactions</em> because only one
transaction spending a particular output can be included in the valid
blockchain with the most proof of work--the blockchain that full nodes
use to determine which keys control which bitcoins.
</p>
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To protect himself against conflicting transactions, it would be wise
To((("conflicting transactions")))((("transactions", "conflicts in"))) protect himself against conflicting transactions, it would be wise
for Bob to wait until the transaction from Alice is included in the
blockchain to a sufficient depth before he considers the money he
received as his to spend (see <<confirmations>>).