Personal blog of Eshin Kunishima — notes on infrastructure, security research, and the small tools I build.https://esh.ink/https://esh.ink/posts/hyperliquid-stars-reverse-engineering/https://esh.ink/posts/hyperliquid-stars-reverse-engineering/HyperliquidのHIP-3 marketに導入されたStarsについて、hl-nodeのRustバイナリ解析とtestnet stateから、action schema、address allowlist、10,000件制限、注文判定を整理する。Fri, 28 Aug 2026 15:00:00 GMThttps://esh.ink/posts/hyperliquid-stars-reverse-engineering/en/https://esh.ink/posts/hyperliquid-stars-reverse-engineering/en/Stars on Hyperliquid's HIP-3 markets, from analysis of the hl-node Rust binary and testnet state: the action schema, the address allowlist, the 10,000 cap, and how orders are checked.Fri, 28 Aug 2026 15:00:00 GMThttps://esh.ink/posts/hyperliquid-portfolio-margin-blp/https://esh.ink/posts/hyperliquid-portfolio-margin-blp/HyperliquidのPortfolio Margin（通称BLP）について、担保・自動借入・PMR・清算リスクと、hl-nodeの静的解析で確認できる範囲を整理する。Thu, 13 Aug 2026 15:00:00 GMThttps://esh.ink/posts/hyperliquid-portfolio-margin-blp/en/https://esh.ink/posts/hyperliquid-portfolio-margin-blp/en/Hyperliquid's Portfolio Margin, commonly called BLP: collateral, automatic borrowing, PMR and liquidation risk, and how far static analysis of hl-node can confirm them.Thu, 13 Aug 2026 15:00:00 GMThttps://esh.ink/posts/hyperliquid-regulation-logic/https://esh.ink/posts/hyperliquid-regulation-logic/Hyperliquid Web フロントエンド (rev 2026-08-01-40f25a22d) における IP・ウォレットアドレスベースの地域／制裁規制ロジックのリバースエンジニアリング調査Sun, 02 Aug 2026 15:00:00 GMThttps://esh.ink/posts/hyperliquid-regulation-logic/en/https://esh.ink/posts/hyperliquid-regulation-logic/en/A reverse-engineering study of the IP and wallet-address based geo and sanctions restriction logic in the Hyperliquid web frontend at revision 2026-08-01-40f25a22d.Sun, 02 Aug 2026 15:00:00 GMThttps://esh.ink/posts/use-cloudflare-workers-to-serve-static-files-on-wasabi/https://esh.ink/posts/use-cloudflare-workers-to-serve-static-files-on-wasabi/Wasabi is no longer able to handle custom domains, so I use Cloudflare Workers to redirect users' requests directly to Wasabi endpoint.Sun, 18 Jul 2021 04:19:25 GMT