cryptocurrency blockchain Solana

Programs

• aka smart contracts
• Foundation of on-chain activity
• Process instructions from end users and other programs
• Stateless
  • Data is stored in separate Solana accounts and passed in via instructions
• Stored in Solana accounts marked as executable
• All programs are
  • Owned by the BPF Loader
  • Executed by the Solana runtime
• Language support
  • Rust
  • C++
  • Any language that targets the LLVM's BPF
• Have a single entry point where instruction processing takes place
  • process_instruction
  • Parameters included:
    • program_id: pubkey
    • accounts: array
    • instruction_data: byte array

Native Programs and the Solana Program Library (SPL)

• Core building blocks for on-chain interactions
• Native Programs
  • Base functionality required for operating validators
  • Included programs:
    • System Program
• SPL Programs
  • Support on-chain activities
    • Creating, swapping, and lending tokens
    • Generating stake pools
    • Maintaining an on-chain name service
  • Includes programs:
    • SPL Token Program
      • Can be invoked via CLI
    • Associated Token Account Program