How to use Solana's SPL Token Program in Rust

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View profile for Satyam Sharma

Blockchain developer | Rust | solidity | Smart contract Auditor

💰 Understanding the Solana Token Program (SPL) 1/ If you’re building on Solana with Rust, you’ll come across the Token Program—often called SPL Token. It’s the backbone of fungible & non-fungible tokens on Solana. Let’s break it down 👇 2/ What is the Token Program? It’s a standard, pre-built Solana program that handles all token logic: Minting tokens Transferring tokens Burning tokens Managing token accounts Think of it as Solana’s equivalent of ERC-20 & ERC-721 combined. 3/ Why not write custom token logic? Because tokens need to follow a consistent standard. If every project built its own, wallets & dApps wouldn’t know how to interact. SPL Token ensures interoperability across the Solana ecosystem. 4/ Accounts, not balances On Solana, balances don’t live inside wallets. 👉 Instead, tokens are held in token accounts (special accounts linked to an owner + mint). This design enables parallel execution and massive scalability. 5/ Mints & Token Accounts Mint = the definition of a token (like the blueprint). Token Account = holds a balance of a particular mint for a user. Example: USDC on Solana has one mint. Every holder owns a token account tied to that mint. 6/ Program Ownership The Token Program owns and validates token accounts. This means security is guaranteed by the standard program, not by each developer reinventing the wheel. 7/ Composability Since all tokens follow the same standard: Wallets can display balances easily DeFi apps (DEXs, lending, staking) can integrate without custom work NFTs (yes, they’re also SPL tokens!) can plug directly into marketplaces 8/ Why it matters for Rust developers When you build Solana programs in Rust, you rarely need to reimplement token logic. 👉 Instead, you use the Token Program through CPI (Cross-Program Invocation). Your program can mint, transfer, or burn tokens securely and consistently.

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