SPL Token Standard

Understanding the Solana Program Library (SPL) token standard and its features.

SPL Token Overview

SPL Token is the standard for fungible and non-fungible tokens on Solana. It provides a consistent interface for token operations across the ecosystem.

Program ID

System

TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA

Token-2022

Extended

Enhanced version with additional features like transfer fees and confidential transfers.

Token Account Structure

Each user needs a separate token account for each SPL token they want to hold.

Mint Account

Stores global information about the token (supply, decimals, authorities).

{
  "supply": "1000000000000",
  "decimals": 6,
  "mintAuthority": "...",
  "freezeAuthority": "..."
}

Token Account

Individual account that holds tokens for a specific owner.

{
  "mint": "...",
  "owner": "...",
  "amount": "1000000",
  "state": "initialized"
}

Key Features

Core Operations

Create mint account
Create token accounts
Mint tokens
Transfer tokens
Burn tokens

Authority Management

Set mint authority
Set freeze authority
Revoke authorities
Freeze/unfreeze accounts