solana-practice

Solana protocol experiments in Rust — native programs, Anchor, PDAs, and CPI.

This repository contains focused Solana protocol experiments.

The goal is to deeply understand:

• Solana account model
• PDA-based authority design
• Cross-Program Invocation (CPI)
• Native Solana programs vs Anchor abstractions

These are not demos or templates. Each folder explores a specific protocol concept.

Projects

counter-contract

Native Solana program (no Anchor). Explores account ownership, serialization, and authority checks.

create-data-account

Manual account creation and initialization. Focus on rent-exemption and correct account sizing.

pda_without_anchor

Deriving and validating PDAs without Anchor helpers.

cpi_using_anchor

Cross-program invocation using Anchor. Focus on signer validation and invoke_signed.

anchor-calculator

Simple Anchor program to compare native vs Anchor workflows.

Design Philosophy

• Prefer explicit authority models
• Minimize accounts per instruction
• Treat CPI as a security boundary
• Tests matter more than UI