Web3

Solana-Data-Model

Solana

Everything in solana is an account

Account

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{
    "key" : "The account address, public key, unique ID" ,
    "lamports" :  "account balance" ,
    "data" : "some data stored" ,
    "executable" : "whether the stored data is code",
    "owner" : "the Public key of the owner"
    /*The owner has read-write-credit-withdraw access, others can only read-credit */
}

Programs

Solana programs are just accounts which is executable. Their data field store eBPF byte code.

  • All programs are stateless, they can only operate other accounts, not themselves.
  • Programs can execute instructions(parameters) and send instructions to other programs
  • If a program operate many accounts, it is done in a parallel way.

Instructions (aka parameters, arguments)

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Instruction : {
    program_id : "The target program of the instruction",
    keys : [Account1, Accounts2 , ...] , //All the accounts involved in this execution
    data : "raw bytes, other arguments" // actions + argumetns
}

Account : {
    "key" : "public key of account" ,
    is_mutable : bool ,
    is_signed : bool
}

Transactions

Transaction can have multiple instructions in it. The transaction is what you send to the blockchain network.

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{
    message : {
       instructions : [Ins1 , Ins2 , ....],
       recent_blockhash : "used for prevent de-duplication",
        fee_payer : "which account pays the transaction fee",
        ...
    }
        signers : "raw bytes, signed version of transaction, used for verification"

}

System Programs

System Programs are like C libraries or GNU toolset created by Solana Lab which you can use to facilitate your development

image-20240726223437810

NFT

NFT is actually SPL token!

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{
    decimal : 0 ,
    total_supply : 1 ,
    metadata : "highly customizable"
}