====== 2.3.2.3 Public Networks ======
[[dido:public:ra:1.2_views:3_taxonomic:2_network_access_ctrll:start|return to Network Access Control ]]

**[[dido:public:ra:xapend:xapend.a_glossary:p:public_network|Public networks]]** are distributed and open, allowing participation in core activities of the network from any [[dido:public:ra:xapend:xapend.a_glossary:n:node|node]] sponsored by anyone. Participation includes joining, leaving, reading, writing, and auditing the activities on the network. There are no authorities or discrimination of nodes.

==== Benefits of Public Networks ====

  * **Open Read and Write**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)) \\ 
    <wrap>Anyone can participate by submitting transactions to the [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]], such as [[dido:public:ra:xapend:xapend.a_glossary:e:ethereum|Ethereum]] or Bitcoin; transactions can be viewed on the [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]] explorer.</wrap>
 
  * **Ledger Is Distributed**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)) \\ 
    <wrap>The database is not centralized like in a [[dido:public:ra:xapend:xapend.a_glossary:c:client-server|client-server]] approach, and all nodes in the blockchain participate in the transaction [[dido:public:ra:xapend:xapend.a_glossary:v:validation|validation]].</wrap>
 
    
  * **Immutable**(("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
)) \\ 
    <wrap>When something is written to the blockchain, it can not be changed, in other words it is [[dido:public:ra:xapend:xapend.a_glossary:i:immutable|immutable]].</wrap>
 
      
  * **Secure Due to Mining** (protection from the [[dido:public:ra:xapend:xapend.a_glossary:f:fifty_one_percent_51_attack]](("Public Vs Private Blockchain In A Nutshell",
Demiro Massessi, 12 December 2018,
[[https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f]]
))) \\ 
    <wrap>For example, with Bitcoin, obtaining a majority of network power could potentially enable massive double spending, and the ability to prevent transaction confirmations, in addition to other potentially malicious acts.</wrap>


    
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