Solana
Flash Loan
Protocol implementation focused on instruction-sysvar validation and atomic loan repayment guarantees.
Atomic repay checks · PDA vault authority · LiteSVM tests
RustAnchorSolanaSPL Tokens
Overview
This flash-loan program lends from a controlled vault and validates same-transaction repayment before completion.
Problem
Flash loans are only safe if repayment conditions are enforced atomically and instruction flow cannot be bypassed.
Solution
I used Solana instruction introspection and PDA custody to enforce repay-in-transaction guarantees with a fixed fee model.