> ## Documentation Index
> Fetch the complete documentation index at: https://anchoragedigital-docs-swig-highlight.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Solana

> Multi-instruction transactions, system programs, and SPL tokens

The Solana module handles transactions with multiple instructions, program invocations, and SPL token operations.

## Architecture overview

### Transaction model

* **Encoding**: Borsh/Bincode serialization
* **Instruction-based**: Multiple instructions per transaction
* **Account Model**: Accounts owned by programs
* **Fee Model**: Fixed base fee with optional priority fees

### Key components

The Solana parser handles:

* System program transfers
* SPL Token operations
* Associated Token Account (ATA) creation
* Multiple instructions per transaction
* Program invocations

## Transaction structure

Solana transactions consist of:

1. **Signatures**: One or more transaction signatures
2. **Message**: Contains the actual transaction data
   * Account keys (all accounts involved)
   * Instructions (operations to execute)
   * Recent blockhash (for replay protection)

## Instruction types

### System program

* SOL transfers between accounts
* Account creation and initialization
* Space allocation for data storage

### SPL token program

* Token transfers
* Token approvals
* Mint and burn operations

### Associated token account

* Automatic creation of token accounts
* Deterministic addressing for user tokens

## Visualization strategy

* **Primary Information** - Display the most significant instruction as the title, with supporting instructions shown as steps
* **Multiple Instructions** - Group related instructions together, showing them as a sequence of operations
* **Account Context** - Show account ownership and program associations when relevant

## Implementation details

Source code available at:

* [Solana Parser](https://github.com/anchorageoss/visualsign-parser/tree/main/src/chain_parsers/visualsign-solana)

## Supported programs

The parser recognizes common Solana programs:

* System Program
* SPL Token Program
* SPL Associated Token Account Program
* Custom programs via IDL (Interface Definition Language)

## Example transaction types

* **SOL Transfer** - Simple transfer of native SOL between accounts
* **SPL Token Transfer** - Transfer of SPL tokens, often including ATA creation if needed
* **Complex DeFi Transaction** - Multiple instructions working together (e.g., create account, transfer tokens, interact with DEX)

## Resources

* [Solana Documentation](https://docs.solana.com/)
* [SPL Token Program](https://spl.solana.com/token)
* [Anchor Framework](https://www.anchor-lang.com/)