The read layer of blockchains has been notoriously neglected in favor of the write layer. It's typically hard to gather information about anything because the necessary logic is hidden somewhere on the internet or lost in time. Fortunately Solana Beach Explorer launched shortly after Solana network genesis and has collected many useful features and logic over time. To access the information users can browse the website or call the API. The project also hosts a validator called the Solana Beach Validator.
Blockchains can be seen as virtual computers that operate according to a core protocol. Developers can deploy programs and make them immutable effectively extending the protocol. Users can interact with the computer by sending transactions with instructions possibly uploading or changing data. The network is operated by validators who maintain real computers running software clients that follow the core protocol. The economics work by charging users transaction fees that validators receive according to their performance. These fees are nominated in the native network token that can be freely exchanged everywhere. Since blockchains work over the internet and the network token is the only gatekeeper typically anyone who can cover transaction fees can transact. However that's only the case on the network level and programs can implement custom access rules or tokens can implement custom transfer rules so while anyone can transact not every transaction might succeed.
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