audits/client · 1 engagement

Fair Casino

Fair Casino is an online gaming platform that operates a Solana-based vault program for secure token custody and withdrawal management. The protocol implements a non-custodial architecture where user deposits are held in a Program Derived Address (PDA) controlled vault, with backend-authorized withdrawals validated through Ed25519 signature verification via instruction introspection.

Audits delivered
1since 2026
most recent · 2026-01-19
Total findings
5
Primary stack
Rust
Solana

Engagement history

Jan 2026 · ongoing
Jan 2026
Fair Casino Solana Vault Program

All engagements

newest first · 1 report
Jan2026

Fair Casino Solana Vault Program

Zealynx audited the Fair Casino Solana vault program, a non-custodial token custody and withdrawal-management system using PDA-based vaults, Ed25519 signature verification via instruction introspection, replay protection, and two-step authority transfers. The two-week review identified 5 issues including 1 High (initialization frontrunning enabling complete vault takeover) and 1 Medium (missing token account constraints). All findings were fixed and verified.

0C1H1M3L0ISolanaRustsolanavaulted25519
All fixed

Why this page exists

When someone asks “is Fair Casino really audited?”, this is the page to send them. Every engagement we’ve delivered, in one place, with the artifacts.

internal docs · zealynx

Quick facts

Client since2026
Engagement1
SLOC reviewed~280
Findings identified5
Critical + high1
Latest commit955864f3
MethodologyZealynx audit methodology →
ZEALYNX SECURITY · client hub · fair-casino
1 engagement · 2026

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