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CH02::tx propagation: use "full node" and "lightweight client"

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Per the updated infobox in CH01, we stop using the name "clients" for
full nodes; they're peers.  We also clarify that miners commit effort to
blocks rather than necessary prove them valid.
This commit is contained in:
David A. Harding 2023-02-04 16:31:34 -10:00
parent a40d5456f3
commit 3af9bb8e93
1 changed files with 8 additions and 7 deletions
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ch02.asciidoc
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@ -471,8 +471,8 @@ blocks are added.
((("propagation", "process of")))Because the transaction contains all
the information necessary to process, it does not matter how or where it
is transmitted to the Bitcoin network. The Bitcoin network is a
peer-to-peer network, with each Bitcoin client participating by
connecting to several other Bitcoin clients. The purpose of the Bitcoin
peer-to-peer network, with each Bitcoin peer participating by
connecting to several other Bitcoin peers. The purpose of the Bitcoin
network is to propagate transactions and blocks to all participants.
===== How it propagates
@ -690,14 +690,15 @@ image::images/mbc2_0209.png["Alice's transaction included in a block"]
(SPV)")))((("simple-payment-verification (SPV)")))Now that Alice's
transaction has been embedded in the blockchain as part of a block, it
is part of the distributed ledger of Bitcoin and visible to all Bitcoin
applications. Each bitcoin client can independently verify the
transaction as valid and spendable. Full-node clients can track the
source of the funds from the moment the bitcoin were first generated in
a block, incrementally from transaction to transaction, until they reach
applications. Each bitcoin full node can independently verify the
transaction as valid and spendable. Full nodes validate every transfer
of the funds from the moment the bitcoin were first generated in
a block through each subsequent transaction until they reach
Bob's address. Lightweight clients can do what is called a simplified
payment verification (see <<spv_nodes>>) by confirming that the
transaction is in the blockchain and has several blocks mined after it,
thus providing assurance that the miners accepted it as valid.
thus providing assurance that the miners expended significant effort
committing to it.
Bob can now spend the output from this and other transactions. For
example, Bob can pay a contractor or supplier by transferring value from