Arb Scanner — Crypto Arbitrage Scanner With Honest Profit Math

The brief

The crypto-arbitrage scanner market is crowded with services that show a “raw” spread: buy on exchange A for X, sell on exchange B for Y, the difference is your profit. In practice that profit evaporates into fees — trading fees on entry and exit, the network fee to move funds between exchanges, slippage when filling size against a shallow order book. The trader sees “+3%” and ends up with a loss.

The goal was a scanner that, from the ground up, computes net profit after all costs and never surfaces a route that turns out unprofitable once fees are deducted. On top of that — own an SEO niche: people search “bitcoin arbitrage”, “USDT routes”, and those queries need dedicated, indexable pages.

The build

The core of the product is the honest-math engine. For every candidate route the system subtracts three cost types:

1. Trading fees on buy and sell (maker/taker for the specific pair).
2. Network fees to withdraw the asset between venues — the actual withdrawal network is considered per coin (a token may have several, each priced differently).
3. Slippage — computed against real order-book depth: how much size can be filled without materially moving the price.

Only what remains after all three is reported as net profit.

Six arbitrage types

The scanner covers not one scenario but six:

• CEX-CEX — classic cross-exchange arbitrage between centralized exchanges.
• P2P arbitrage — routes on P2P markets via banks and payment systems.
• Futures / funding — funding-rate arbitrage and spot-futures strategies.
• CEX ↔ DEX — routes between centralized and decentralized exchanges, gas included.
• Whale tracking — monitoring large wallets and market-maker moves.
• Listings — instant alerts on new listings and volatility spikes.

Telegram alerts with a threshold

The service scans order books across 14 exchanges in real time. The user sets a minimum net-profit threshold — and a Telegram alert fires only when a route actually clears that threshold after all fees. No noise from hundreds of “paper” routes that are really losses.

A core product principle, stated right on the site: the service only finds opportunities — the user makes the trades and controls the money. The roadmap adds a semi-automatic trade builder (“one-button” trade prep with user confirmation) and — later, after a proven stable net margin — an autonomous mode with hard limits and a kill switch.

Per-coin SEO cluster

To capture organic traffic, each popular coin gets its own landing page breaking down arbitrage for that coin specifically: which withdrawal networks, which exchanges, how honest profit is computed. Bitcoin, Ethereum, USDT, Toncoin, XRP, Solana and others — each coin is a separate indexable URL targeting its own query pool. Plus an arbitrage blog with educational content.

The outcome

A working service is live at arb-scanner.ru with a public landing layer (SSG, indexable from the first byte) and the scanner app. Monetization is freemium: free to start, pay once the tool makes money — removing the entry barrier.

The key differentiator fits in one line: the user sees only what they’ll actually pocket. That’s not a marketing slogan but an architectural decision — honest math is baked into the engine core, not bolted on top.

Tech stack

• Architecture: public SSG landing (Astro 5) + client-side scanner app
• Data: REST/WebSocket connections to 14 exchange APIs, computed against real order-book depth
• Notifications: Telegram Bot API, alerts gated by a user net-profit threshold
• SEO: per-coin landing cluster + blog, indexable static HTML
• Model: freemium (free start, paid extended access)
• Hosting: own VPS, Nginx + Let’s Encrypt SSL