Anti-Slop CTF 2026 Blockchain Writeup: Finality Cache + Canopy Cache
Fifth and final per-category post in the Anti-Slop CTF 2026 series. The earlier writeups covered web (HTTP parsers), reverse (ECDSA nonce attack + SHA-256 length extension), pwn (Bellcore CRT fault + leak-and-overwrite + GCM forge chain), and crypto (HNP CVP + CBC-MAC splice). This one walks the two blockchain-track challenges in the same step-by-step format. ...