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CH10: intro edits

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- We revise sentence about equality among peers to make it clear that
  the peers are full nodes.  Clients are not peers of a full node.

- Remove clause about "reciprocity" being the incentive for
  participation.  I think there are varied reasons for operating a full
  node, ranging from wanting to validate your own transactions
  (requiring only a pruning full node) to wanting to keep mining
  decentralized (e.g. by relaying transactions).

- Drop line about non-Bitcoin-P2P protocols being "extended Bitcoin
  network".  I think that's an unnecessary categorization.
This commit is contained in:
David A. Harding 2023-05-10 06:54:08 -10:00
parent 328c11c1ec
commit da1f8ee2ba
1 changed files with 9 additions and 11 deletions
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@ -6,18 +6,18 @@
((("Bitcoin network", "peer-to-peer architecture")))((("peer-to-peer ((("Bitcoin network", "peer-to-peer architecture")))((("peer-to-peer
(P2P)")))Bitcoin is structured as a peer-to-peer network architecture on (P2P)")))Bitcoin is structured as a peer-to-peer network architecture on
top of the internet. The term peer-to-peer, or P2P, means that the top of the internet. The term peer-to-peer, or P2P, means that the
computers that participate in the network are peers to each other, that full nodes which participate in the network are peers to each other, that
they are all equal, that there are no "special" nodes, and that all they can all equal, and that there are no "special" nodes.
nodes share the burden of providing network services. The network nodes The network nodes
interconnect in a mesh network with a "flat" topology. There is no interconnect in a mesh network with a "flat" topology. There is no
server, no centralized service, and no hierarchy within the network. server, no centralized service, and no hierarchy within the network.
Nodes in a P2P network both provide and consume services at the same Nodes in a P2P network both provide and consume services at the same
time with reciprocity acting as the incentive for participation. P2P time. P2P
networks are inherently resilient, decentralized, and open. A preeminent networks are inherently resilient, decentralized, and open. A preeminent
example of a P2P network architecture was the early internet itself, example of a P2P network architecture was the early internet itself,
where nodes on the IP network were equal. Today's internet architecture where nodes on the IP network were equal. Today's internet architecture
is more hierarchical, but the Internet Protocol still retains its is more hierarchical, but the Internet Protocol still retains its
flat-topology essence. Beyond Bitcoin, the largest and most successful flat-topology essence. Beyond Bitcoin and the internet, the largest and most successful
application of P2P technologies is file sharing, with Napster as the application of P2P technologies is file sharing, with Napster as the
pioneer and BitTorrent as the most recent evolution of the architecture. pioneer and BitTorrent as the most recent evolution of the architecture.
@ -25,22 +25,20 @@ Bitcoin's P2P network architecture is much more than a topology choice.
Bitcoin is a P2P digital cash system by design, and the network Bitcoin is a P2P digital cash system by design, and the network
architecture is both a reflection and a foundation of that core architecture is both a reflection and a foundation of that core
characteristic. Decentralization of control is a core design principle characteristic. Decentralization of control is a core design principle
that can only be achieved and maintained by a flat, decentralized P2P that can only be achieved and maintained by a flat and decentralized P2P
consensus network. consensus network.
((("Bitcoin network", "defined")))The term "Bitcoin network" refers to ((("Bitcoin network", "defined")))The term "Bitcoin network" refers to
the collection of nodes running the Bitcoin P2P protocol. In addition to the collection of nodes running the Bitcoin P2P protocol. In addition to
the Bitcoin P2P protocol, there are other protocols such as Stratum that the Bitcoin P2P protocol, there are other protocols that
are used for mining and lightweight or mobile wallets. These additional are used for mining and lightweight or mobile wallets. These additional
protocols are provided by gateway routing servers that access the protocols are provided by gateway routing servers that access the
Bitcoin network using the Bitcoin P2P protocol and then extend that Bitcoin network using the Bitcoin P2P protocol and then extend that
network to nodes running other protocols. For example, Stratum servers network to nodes running other protocols. For example, Stratum servers
connect Stratum mining nodes via the Stratum protocol to the main connect Stratum mining nodes via the Stratum protocol to the main
Bitcoin network and bridge the Stratum protocol to the Bitcoin P2P Bitcoin network and bridge the Stratum protocol to the Bitcoin P2P
protocol. We use the term "extended Bitcoin network" to refer to the protocol. We will describe some of the most commonly used of those
overall network that includes the Bitcoin P2P protocol, pool-mining protocols in this chapter in addition to Bitcoin's P2P protocol.
protocols, the Stratum protocol, and any other related protocols
connecting the components of the Bitcoin system.
=== Node Types and Roles === Node Types and Roles