@ -233,7 +233,7 @@ If Bob's bitcoin wallet application is directly connected to Alice's wallet appl
=== Bitcoin Mining
((("mining and consensus", "overview of", "blocks and")))((("blockchain technology", "overview of mining", id="BToverview02")))Alice's transaction is now propagated on the bitcoin network. It does not become part of the _blockchain_ until it is verified and included in a block by a process called _mining_. See <<bitcoin_network_ch08>> for a detailed explanation.
((("mining and consensus", "overview of", "blocks")))((("blockchain technology", "overview of mining", id="BToverview02")))Alice's transaction is now propagated on the bitcoin network. It does not become part of the _blockchain_ until it is verified and included in a block by a process called _mining_. See <<bitcoin_network_ch08>> for a detailed explanation.
The bitcoin system of trust is based on computation. Transactions are bundled into _blocks_, which require an enormous amount of computation to prove, but only a small amount of computation to verify as proven. The mining process serves two purposes in bitcoin: